Sediment sample analysis data from ponds to the beach on North Core Banks, NC in October 2022

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Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: Jin-Si R. Over
Originator: Christopher R. Sherwood
Publication_Date: 20231215
Title:
Sediment sample analysis data from ponds to the beach on North Core Banks, NC in October 2022
Edition: 1.0
Geospatial_Data_Presentation_Form: tabular data
Series_Information:
Series_Name: data release
Issue_Identification: DOI:10.5066/P99IV3FC
Publication_Information:
Publication_Place: Woods Hole Coastal and Marine Science Center, Woods Hole, MA
Publisher:
U.S. Geological Survey, Coastal and Marine Hazards and Resources Program
Online_Linkage: https://doi.org/10.5066/P99IV3FC
Online_Linkage: Larger_Work_Citation:
Citation_Information:
Originator: Jin-Si R. Over
Originator: Christopher R. Sherwood
Originator: Jennifer M. Cramer
Originator: Alexandra D. Evans
Originator: Sara L. Zeigler
Publication_Date: 2023
Title:
Topographic, bathymetric, multispectral, vegetation, sediment, and supporting GPS data collected on North Core Banks, Cape Lookout National Seashore, North Carolina in October 2022, U.S. Geological Survey Field Activity 2022-034-FA (ver. 2.0, December 2023)
Edition: 2.0
Geospatial_Data_Presentation_Form: digital data
Series_Information:
Series_Name: data release
Issue_Identification: DOI:10.5066/P99IV3FC
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Other_Citation_Details:
Suggested citation: Over, J.R., Sherwood, C.R., Cramer, J.M., Evans, A.D., and Zeigler, S.L, 2023, Topographic, bathymetric, multispectral, vegetation, sediment, and supporting GPS data collected on North Core Banks, Cape Lookout National Seashore, North Carolina in October 2022, U.S. Geological Survey Field Activity 2022-034-FA (ver. 2.0, December 2023): U.S. Geological Survey data release, https://doi.org/10.5066/P99IV3FC.
Online_Linkage: https://doi.org/10.5066/P99IV3FC
Online_Linkage:
Description:
Abstract:
These data map in high detail surficial cross-sections of North Core Banks, a barrier island in Cape Lookout National Seashore, NC, in October 2022. U.S. Geological Survey field efforts are part of an interagency agreement with the National Park Service to monitor the recovery of the island from Hurricanes Florence (2018) and Dorian (2019). Three sites of outwash, overwash, and pond formation were targeted for extensive vegetation ground-truthing, sediment samples, bathymetric mapping with a remote-controlled surface vehicle, and uncrewed aerial systems (UAS) flights to collect multispectral imagery. Five semi-permanent ground control points were also installed and surveyed to act as control for additional aerial imagery collected via plane. UAS imagery were processed in Agisoft Metashape (v. 1.8.1) with surveyed temporary ground control points to produce calibrated multispectral (red, blue, green, red edge, near infrared, and panchromatic) orthoimages and digital surface models.
Purpose:
These grain-size and organic content analysis data may be used in numerical models of coastal dynamics and to better understand how the channels and ponds formed during Hurricane Dorian fill in.
Supplemental_Information:
For more information about the WHCMSC Field Activity, see https://cmgds.marine.usgs.gov/fan_info.php?fan=2022034FA. Bounding coordinates include the extent of where the samples were taken. Images of sand are also included in the larger work citation which can be used for SandSnap applications and to compare between the grain size analysis methods. This dataset was added to the larger work citation release, resulting in a version 2 of the original data release.
Time_Period_of_Content:
Time_Period_Information:
Multiple_Dates/Times:
Single_Date/Time:
Calendar_Date: 20221017
Single_Date/Time:
Calendar_Date: 20221018
Single_Date/Time:
Calendar_Date: 20221019
Currentness_Reference: Ground condition; multiple survey days.
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -76.27040
East_Bounding_Coordinate: -76.22566
North_Bounding_Coordinate: 34.92302
South_Bounding_Coordinate: 34.88885
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: U.S. Geological Survey
Theme_Keyword: USGS
Theme_Keyword: Coastal and Marine Hazards and Resources Program
Theme_Keyword: CMHRP
Theme_Keyword: Woods Hole Coastal and Marine Science Center
Theme_Keyword: WHCMSC
Theme_Keyword: Remote Sensing Coastal Change
Theme_Keyword: Hurricane Florence
Theme_Keyword: Hurricane Dorian
Theme_Keyword: grain size
Theme_Keyword: loss on ignition
Theme_Keyword: National Park Service
Theme_Keyword: sediment sample
Theme:
Theme_Keyword_Thesaurus: Data Categories for Marine Planning
Theme_Keyword: Physical Habitats and Geomorphology
Theme:
Theme_Keyword_Thesaurus: Marine Realms Information Bank (MRIB) keywords
Theme_Keyword: sediment
Theme_Keyword: grab sampling
Theme_Keyword: beach
Theme_Keyword: sediment analysis
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: geoscientificInformation
Theme_Keyword: oceans
Theme:
Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: sediment transport
Theme_Keyword: grain-size analysis
Theme:
Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:654d13f6d34ee4b6e05c2e55
Place:
Place_Keyword_Thesaurus: Geographic Names Information System (GNIS)
Place_Keyword: Atlantic Ocean
Place_Keyword: State of North Carolina
Place_Keyword: Cape Lookout
Place_Keyword: North Core Banks
Access_Constraints: None.
Use_Constraints:
Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey (USGS) as the source of this information.
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Jin-Si R. Over
Contact_Organization:
U.S. Geological Survey, Woods Hole Coastal and Marine Science Center
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Contact_Voice_Telephone: 508-548-8700 x2297
Contact_Electronic_Mail_Address: jover@usgs.gov
Browse_Graphic:
Browse_Graphic_File_Name: Browse_Graphic_File_Description: Collecting sediment samples with a grab sampler from kayaks.
Browse_Graphic_File_Type: JPEG
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
Laboratory analyses were conducted at the USGS Woods Hole Coastal and Marine Science Center Sediment Laboratory using a HORIBA LA-960 laser diffraction size analyzer with manufacturer guaranteed accuracy of +/- 0.6%. The performance of every HORIBA LA-960 laser diffraction unit is verified with National Institute of Standards and Technology (NIST) traceable mono- and polydisperse size standards. Due to rounding, the sum of the aggregate class percentages (e.g., GRAVEL, SAND, etc.) and the sum of the phi fraction percentages (e.g., Phi_16, Phi_15, etc.) may not always add up to exactly 100.000%.
Logical_Consistency_Report:
Samples were stored in a refrigerated and dark location until analyzed in the laboratory on the HORIBA LA-960 laser diffraction size analyzer and combustion oven as described in the process steps below. Note that for the logarithmic statistics the range domain maximum is the minimum grain size even though it is the larger number.
Completeness_Report:
All samples collected were analyzed. Grab samples were the only ones analyzed for organics.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Horizontal position was determined using a Garmin GPSMAP 78sc handheld GPS. The expected absolute, horizontal accuracy is stated to be 3 to 5 m at the 95% confidence level using the Wide Area Augmentation System (WAAS) setting. Additional sources of error in the position for the water sample locations are caused by the offset from the GPS and the exact location of the grab sampler at the time the sample was taken, which could be as large as 2 m; therefore, overall expected accuracy of the reported horizontal position for these water sample locations is on the order of 7 m or better.
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report:
Elevations were taken from the bathymetry data and digital surface models available in the larger work citation using the horizontal positions of the Garmin. Due to the large horizontal error the actual vertical position extracted from the data may not be where the sample was taken but is accurate to less than a meter.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: Walter E. Dean
Publication_Date: 1974
Title:
Determination of carbonate and organic matter in calcareous sediments and sedimentary rocks by loss on ignition; comparison with other methods
Series_Information:
Series_Name: Journal of Sedimentary Research
Issue_Identification: Vol. 44
Publication_Information:
Publication_Place: Tulsa, OK
Publisher: SEPM Journal of Sedimentary Research
Online_Linkage: https://doi.org/10.1306/74d729d2-2b21-11d7-8648000102c1865d
Type_of_Source_Media: Digital and/or Hardcopy
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1974
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: Dean (1974)
Source_Contribution:
A modified version of the methods described in the paper were used to produce the loss on ignition dataset.
Process_Step:
Process_Description:
Sand was collected with a small spade from the upper 2 cm of the sample site and placed into a labeled plastic bag for grain-size analysis. Samples at each site (New Pond 0, 1, and 3) were taken on a shore-perpendicular profile from the pond or channel edge to the ocean side waterline, targeting changes in topography and visually distinct changes in the sand. Two additional samples were taken using a grab sampler deployed from two kayaks on New Pond 1. Samples were stored in a cooler. The dates of the sample collection are provided in the CSV file, the process data provided here is the last day of collection. A picture was also taken of the surface where the sand was collected with a quarter for scale (see larger work citation SandSnap grain-size data and photos).
Process_Date: 20221019
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Jin-Si R. Over
Contact_Organization:
U.S. Geological Survey, Woods Hole Coastal and Marine Science Center
Contact_Position: Geographer
Contact_Address:
Address_Type: mailing and physical address
Address: U.S. Geological Survey
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Contact_Voice_Telephone: 508-548-8700 x2297
Contact_Electronic_Mail_Address: jover@usgs.gov
Process_Step:
Process_Description:
The samples were analyzed in the sediment laboratory at the USGS Woods Hole Coastal and Marine Science Center using the HORIBA LA-960 laser diffraction unit and sieving of the ≥ -2 phi fraction. Samples submitted to the sediment laboratory for grain-size analysis were assigned unique analysis identifiers (ANALYSIS_ID). Each batch is entered into a Microsoft Excel data entry spreadsheet (LD Worksheet Template_JO01.xlsx, where JO01 is the identifier assigned to the sample submission) to record the initial and dried sample weights, as well as the sieved coarse fraction weights. Each batch was also entered into macro-enabled Microsoft Excel data entry spreadsheets (GrainSizeWorksheet_LD1-30_JO01(batch_yy).xlsm or GrainSizeWorksheet_LD31-60_JO01(batch_yy).xlsm, where "LD1-30” and “LD31-60” refer to the pre-labeled and weighed glass laser diffraction vials in which the samples will be run, and “batch_yy” refers to the sample batch) to record the measurement data coming from the laser diffraction unit and incorporate the initial, dried, and sieved weights.
About 10-15 grams of wet sediment were placed in a pre-weighed beaker and the gross weight was recorded. The sample was wet sieved through a 4 mm (No. 5) sieve. If there was any coarse fraction remaining in the sieve, the coarse material was oven dried at 100°C in a pre-weighed beaker and weighed again when dry. This coarse fraction was dry sieved to determine the individual weights of the -2 to -5 phi fractions, and the weights were recorded in the data entry spreadsheet LD Worksheet Template_SS05.xlsx. The fine fraction in water was collected in a pre-labeled and weighed glass laser diffraction vial. If there was any coarse fraction remaining in the sieve from wet sieving, this vial was also oven dried at 100°C and weighed when dry. If there was no coarse fraction remaining from wet sieving, the sample proceeded directly to processing for analyses by the HORIBA LA-960 laser diffraction unit.
Fine fractions ready for analysis by the HORIBA laser diffraction unit were rehydrated with distilled water if they had been dry. Fifteen (15) ml of pre-mixed 40 g/l sodium hexametaphosphate [(NaPO3)6] was added to each sample. If the height of the fluid in the laser diffraction vial was less than 5 cm, more distilled water was added to raise the level to no more than 8 cm in the vial. The samples were gently stirred, covered, and allowed to soak for at least 1 hour (for samples that were not dried) or up to 24 hours (for samples that were dried). Soaked vials were placed into an ultrasonic bath and run for 10 minutes at a frequency of 37 Hz with a power level of 100. If the samples appeared to be fully disaggregated, they were placed into pre-determined autosampler locations and were run using the HORIBA LA-960 for Windows software to get the fine fraction grain-size distributions. The fine fraction distribution data was added to the appropriate data entry spreadsheets (GrainSizeWorksheet_LD1-30_JO01(batch_yy).xlsm or GrainSizeWorksheet_LD31-60_JO01(batch_yy).xlsm). The spreadsheet was used to calculate a continuous phi class distribution from the original fractions.
Process_Date: 202305
Process_Step:
Process_Description:
A continuous phi class distribution from the original fractions was transposed to the "results" tab in the macro-enabled Microsoft Excel data entry workbook (GrainSizeWorksheet_LD1-30_JO01(batch_01, batch_02, batch_03, or batch_replicates).xlsm or GrainSizeWorksheet_LD31-60_JO01(batch_01, batch_02, batch_03, or batch_replicates).xlsm. Macros in the workbook (“GS_MoM_Arithmetic,” "GS_statistics," and "sedimentname") were run to calculate grain-size classification and statistical analyses and finish processing the data. Sample, navigation, and field identifiers, along with continuous phi class distribution data, grain-size classification, and statistical analysis results were copied and pasted into the final Microsoft Excel spreadsheet (JO01_GS-LD_results.xlsx). The processed data were quality control checked and assigned a quality grade based on the examination of the analytical data. Processed data were released to the submitter and incorporated into the laboratory's database. All raw analytical data generated by the samples were archived in the sediment analysis laboratory.
Process_Date: 202305
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Brian Buczkowski
Contact_Organization: U.S. Geological Survey
Contact_Position: Lab Manager
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Contact_Voice_Telephone: (508) 548-8700 x2310
Contact_Electronic_Mail_Address: bbuczkowski@usgs.gov
Process_Step:
Process_Description:
Grain size data were reprocessed in September 2023 as part of a corrective action taken after an issue was identified in the Microsoft Excel data processing workbook (version 1.0) used to calculate grain size statistics and phi class distributions from raw data obtained from the Sediment Lab's Horiba LA-960 laser diffraction unit. Data coming from the instrument and weights recorded from sieving were not faulty. An error was found in a formula embedded in the workbook that translates data originally formatted in columns into rows. There are 96 bins of particle size distribution information recorded for each sample run on the instrument. The error resulted in a shifting of data by one bin (the values in bin number one in the column of data coming from the machine were translated into the position for bin number 2 in the corresponding row, and so on). Overall, the resulting data coming from version 1.0 of the processing workbook are affected by a slight shift in grainsize distribution. This error in the formula was corrected in September 2023 and a new version of the workbook (version 2.1) was generated and approved for use in the Sediment Lab. In addition, labeling for the logarithmic d10, d25, d75 and d90 headings was updated. Note the differing order of these values between Logarithmic and Arithmetic Method of Moments statistics. All affected grain size datasets using data from the laser diffraction unit have been reprocessed, reviewed, and prepared for release.
Process_Date: 202309
Process_Step:
Process_Description:
Carbon content loss-on-ignition (CC-LOI) samples data with Sample_ID containing "CC") were taken from samples submitted to the Sediment Laboratory and placed into pre-weighed aluminum dishes. Samples were weighed after drying in oven at 100 degrees Celsius for at least 24 hours. The dry sample was powdered pulverized by hand. Five grams of dry powder were transferred to a pre-weighed ceramic crucible.
Process_Date: 202311
Process_Step:
Process_Description:
Filled crucibles were heated in a muffle furnace for LOI using a modified method outlined by Dean (1974). Crucibles were heated to 550 degrees Celsius for 3 hours, cooled, and weighed. Weight differential after the first heating step is assigned to loss of organic matter.
Process_Date: 202311
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Laboratory Manager
Contact_Organization: U.S. Geological Survey
Contact_Address:
Address_Type: mailing address
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543
Country: US
Contact_Voice_Telephone: 508-548-8700 x2277
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: gs-wh_sedlab@usgs.gov
Process_Step:
Process_Description:
The updated results from the laser diffraction (JO01_GS-LD_results.xlsx) and loss on ignition (J01_LOI_results.xlsx) are provided but were also saved as CSV files. Files have the FA number and location added to the front of the file name (2022034FA_NCB). The CSV file column headers of the las diffraction data were also edited to be lowercase and modified slightly to facilitate readability. The laser diffraction CSV file does not have the first row of the excel file that labels columns U-AC as “Methods of Moments Statistics – Logarithmic (phi)”, columns AD-AL as “Methods of Moments Statistics – Arithmetic (micrometers)”, and columns AM-BH as “Distribution (phi)”. Modifications to the laser diffraction CSV headers not related to capitalization or changing spaces to underscores include T_DEPTH to T_Depth_cm, B_DEPTH to B_Depth_cm, DATE_COLLECTED to Collection_date, ANALYSIS COMPLETION DATE to Analysis_date, WEIGHT to Weight_g, CLASSIFICATION (SHEPARD) to Classification, MEDIAN (D50) to D50, and QA/QC COMMENTS to Comments. Additional changes include adding _Phi to the headers in columns U-AC, adding _um to the headers in columns AD-AL, and all minus signs were replaced with M.
Process_Date: 202312
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Jin-Si R. Over
Contact_Organization:
U.S. Geological Survey, Woods Hole Coastal and Marine Science Center
Contact_Position: Geographer
Contact_Address:
Address_Type: mailing and physical address
Address: U.S. Geological Survey
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Contact_Voice_Telephone: 508-548-8700 x2297
Contact_Electronic_Mail_Address: jover@usgs.gov
Process_Step:
Process_Description: Corrected the spelling of an author name 20240122.
Process_Date: 20240122
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: VeeAnn A. Cross
Contact_Organization:
U.S. Geological Survey, Woods Hole Coastal and Marine Science Center
Contact_Position: Marine Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: U.S. Geological Survey
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Contact_Voice_Telephone: 508-548-8700 x2251
Contact_Electronic_Mail_Address: vatnipp@usgs.gov
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Point
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: Point
Point_and_Vector_Object_Count: 31
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Geographic:
Latitude_Resolution: 0.0197464427
Longitude_Resolution: 0.0258271413
Geographic_Coordinate_Units: Decimal degrees
Geodetic_Model:
Horizontal_Datum_Name:
North American Datum of 1983 (National Spatial Reference System 2011)
Ellipsoid_Name: GRS_1980
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257224
Vertical_Coordinate_System_Definition:
Altitude_System_Definition:
Altitude_Datum_Name: North American Vertical Datum of 1988 using Geoid 18
Altitude_Resolution: 0.001
Altitude_Distance_Units: meters
Altitude_Encoding_Method:
Explicit elevation coordinate included with horizontal coordinates
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label:
2022034FA_NCB_JO01_GS-LD_results.csv and 2022034FA_NCB_JO01_GS-LD_results.xlsx
Entity_Type_Definition:
Data spreadsheet containing positions of the samples, the grain-size analysis results analyzed using the HORIBA laser diffraction unit and sieving of the ≥ -2 phi fraction, and the organic content results. These are the attribute labels for the CSV file but the attribute definition and values are the same in the CSV and XLSX file.
Entity_Type_Definition_Source: U.S. Geological Survey
Attribute:
Attribute_Label: Analysis_ID
Attribute_Definition:
An identifier for the sample which is unique to the database. This identifier begins with the assigned multi-letter code GS-, which corresponds to the type of analysis performed on the sample (grain-size analysis), followed by a six-digit number assigned sequentially as samples are registered for analysis.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Unrepresentable_Domain: Character string.
Attribute:
Attribute_Label: Sample_ID
Attribute_Definition:
The identification value assigned to the sample at the time of collection. This varies from field activity to field activity and the ID can contain any combination of letters and numbers. "Replicate" indicates the sample was run multiple times.
Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary
Attribute_Domain_Values:
Unrepresentable_Domain: Character string.
Attribute:
Attribute_Label: Project
Attribute_Definition:
Name of project or project number under which samples were taken or data generated; sometimes project name indicates a more specific area.
Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary
Attribute_Domain_Values:
Unrepresentable_Domain: Character string.
Attribute:
Attribute_Label: FAN
Attribute_Definition:
The serial number assigned to the dataset field activity during which the sample was collected. This value is in the format YYYY-XXX-FA where YYYY is the year, XXX is the number assigned to the activity within the year, and FA indicates Field Activity.
Attribute_Definition_Source:
modified from USGS East Coast Sediment Texture Database data dictionary
Attribute_Domain_Values:
Unrepresentable_Domain: Character string.
Attribute:
Attribute_Label: Submitter
Attribute_Definition:
Name of Principal Investigator or Chief Scientist responsible for data collection (usually first initial and last name) when available.
Attribute_Definition_Source:
modified from USGS East Coast Sediment Texture Database data dictionary
Attribute_Domain_Values:
Unrepresentable_Domain: Character string.
Attribute:
Attribute_Label: Area
Attribute_Definition:
General geographic area of data collection. Name is general enough to easily locate area on a state map.
Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary
Attribute_Domain_Values:
Unrepresentable_Domain: Character string.
Attribute:
Attribute_Label: Latitude
Attribute_Definition:
Latitude coordinate, in decimal-degrees, of sample location (NAD83[2011]). South latitude is recorded as negative values.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 34.88885
Range_Domain_Maximum: 34.92302
Attribute_Units_of_Measure: Decimal degrees
Attribute:
Attribute_Label: Longitude
Attribute_Definition:
Longitude coordinate, in decimal degrees, of sample location (NAD83[2011]). West longitude is recorded as negative values.
Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -76.27040
Range_Domain_Maximum: -76.22566
Attribute_Units_of_Measure: Decimal degrees
Attribute:
Attribute_Label: Depth_m
Attribute_Definition:
Measured elevation, in meters, relative to NAVD88 (geoid 18) of where the surface sample was taken
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -4.209
Range_Domain_Maximum: 1.102
Attribute_Units_of_Measure: meters
Attribute:
Attribute_Label: T_Depth_cm
Attribute_Definition:
Top depth of sample, in centimeters, below the sediment-air interface.
Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 0
Attribute_Units_of_Measure: centimeters
Attribute:
Attribute_Label: B_Depth_cm
Attribute_Definition:
Bottom depth of sample, in centimeters, below the sediment-air interface.
Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 2
Range_Domain_Maximum: 2
Attribute_Units_of_Measure: centimeters
Attribute:
Attribute_Label: Device
Attribute_Definition: Device used to collect the sample.
Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Sampling scoop
Enumerated_Domain_Value_Definition: sample collected by hand with specialized trowel
Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
Attribute:
Attribute_Label: Collection_date
Attribute_Definition:
Calendar date indicating when the sample was collected in the format MM/DD/YYYY where DD is the day of the month, MM is the numeric month, and YYYY is the year.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Unrepresentable_Domain: Character string.
Attribute:
Attribute_Label: Analysis_date
Attribute_Definition:
Calendar date indicating when sample analysis was completed in the format MM/DD/YYYY where DD is the day of the month, MM is the numeric month, and YYYY is the year.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Unrepresentable_Domain: Character string.
Attribute:
Attribute_Label: Weight_g
Attribute_Definition: Weight of wet sample in grams.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 7.5338
Range_Domain_Maximum: 27.7079
Attribute_Units_of_Measure: grams
Attribute_Measurement_Resolution: 0.0001
Attribute:
Attribute_Label: Gravel_PCT
Attribute_Definition:
Gravel content in percent dry weight of the sample (particles with nominal diameters greater than 2 mm; -1 phi and larger).
Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.0000
Range_Domain_Maximum: 0.0000
Attribute_Units_of_Measure: weight percent
Attribute_Measurement_Resolution: 0.0001
Attribute:
Attribute_Label: Sand_PCT
Attribute_Definition:
Sand content in percent dry weight of the sample (particles with nominal diameters less than 2 mm, but greater than or equal to 0.0625 mm; 0 phi through 4 phi).
Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 61.7495
Range_Domain_Maximum: 100.0025
Attribute_Units_of_Measure: weight percent
Attribute_Measurement_Resolution: 0.0001
Attribute:
Attribute_Label: Silt_PCT
Attribute_Definition:
Silt content in percent dry weight of the sample (particles with nominal diameters less than 0.0625 mm, but greater than or equal to 0.004 mm; 5 phi through 8 phi, inclusive).
Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.0000
Range_Domain_Maximum: 34.7770
Attribute_Units_of_Measure: weight percent
Attribute_Measurement_Resolution: 0.0001
Attribute:
Attribute_Label: Clay_PCT
Attribute_Definition:
Clay content in percent dry weight of the sample (particles with nominal diameters less than 0.004 mm; 9 phi and smaller).
Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.0000
Range_Domain_Maximum: 3.4765
Attribute_Units_of_Measure: weight percent
Attribute_Measurement_Resolution: 0.0001
Attribute:
Attribute_Label: Classification
Attribute_Definition:
Sediment description based on a rigorous definition (Shepard [1954] as modified by Schlee and Webster [1967], Schlee [1973], and Poppe and others [2014]). These values represent the classifications that are present in this dataset, not all possible sediment classifications.
Attribute_Definition_Source:
Modified from USGS East Coast Sediment Texture Database data dictionary
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: sand
Enumerated_Domain_Value_Definition:
Sediment whose main phase is less than 2 mm, but greater than or equal to 0.0625 mm.
Enumerated_Domain_Value_Definition_Source: USGS East Coast Sediment Texture Database data dictionary
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: silty sand
Enumerated_Domain_Value_Definition:
Sediment whose main phase is clay (sediment whose main phase is less than 0.004 mm), but with significant silt (sediment whose main phase is less than 0.0625 mm, but greater than or equal to 0.004 mm).
Enumerated_Domain_Value_Definition_Source: USGS East Coast Sediment Texture Database data dictionary
Attribute:
Attribute_Label: Mean_Phi
Attribute_Definition: Average value in the grain-size distribution in phi units.
Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1.10
Range_Domain_Maximum: 3.60
Attribute_Units_of_Measure: phi
Attribute_Measurement_Resolution: 0.01
Attribute:
Attribute_Label: StDev_Phi
Attribute_Definition:
Standard deviation (root mean square of the deviations) of the grain-size distribution in phi units (sorting).
Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.50
Range_Domain_Maximum: 2.43
Attribute_Units_of_Measure: phi
Attribute_Measurement_Resolution: 0.01
Attribute:
Attribute_Label: Skewness_Phi
Attribute_Definition:
Skewness (unitless deviation from symmetrical form) of the grain-size distribution using logarithmic method of moments in phi units.
Attribute_Definition_Source:
modified from USGS East Coast Sediment Texture Database data dictionary
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -0.49
Range_Domain_Maximum: 2.77
Attribute_Units_of_Measure: phi
Attribute_Measurement_Resolution: 0.01
Attribute:
Attribute_Label: Kurtosis_Phi
Attribute_Definition:
Kurtosis (unitless degree of curvature near the mode) of the grain-size distribution using logarithmic method of moments in phi units.
Attribute_Definition_Source:
modified from USGS East Coast Sediment Texture Database data dictionary
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 2.27
Range_Domain_Maximum: 12.40
Attribute_Units_of_Measure: phi
Attribute_Measurement_Resolution: 0.01
Attribute:
Attribute_Label: D90_Phi
Attribute_Definition:
Diameter at which 90% of the sample mass is comprised of sediment particles with a diameter less than this value.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.20
Range_Domain_Maximum: 1.19
Attribute_Units_of_Measure: phi
Attribute_Measurement_Resolution: 0.01
Attribute:
Attribute_Label: D75_Phi
Attribute_Definition:
Diameter at which 75% of the sample mass is comprised of sediment particles with a diameter less than this value.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.58
Range_Domain_Maximum: 1.63
Attribute_Units_of_Measure: phi
Attribute_Measurement_Resolution: 0.01
Attribute:
Attribute_Label: D50_Phi
Attribute_Definition:
Diameter at which 50% of the sample mass is comprised of sediment particles with a diameter less than this value and 50% is larger; middle point in the grain-size distribution in phi units.
Attribute_Definition_Source:
modified from USGS East Coast Sediment Texture Database data dictionary
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1.15
Range_Domain_Maximum: 2.66
Attribute_Units_of_Measure: phi
Attribute_Measurement_Resolution: 0.01
Attribute:
Attribute_Label: D25_Phi
Attribute_Definition:
Diameter at which 25% of the sample mass is comprised of sediment particles with a diameter less than this value.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1.61
Range_Domain_Maximum: 5.54
Attribute_Units_of_Measure: phi
Attribute_Measurement_Resolution: 0.01
Attribute:
Attribute_Label: D10_Phi
Attribute_Definition:
Diameter at which 10% of the sample mass is comprised of sediment particles with a diameter less than this value.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 6.86
Range_Domain_Maximum: 1.88
Attribute_Units_of_Measure: phi
Attribute_Measurement_Resolution: 0.01
Attribute:
Attribute_Label: Mean_um
Attribute_Definition: Average value in the grain-size distribution in microns.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 194.93
Range_Domain_Maximum: 517.77
Attribute_Units_of_Measure: microns
Attribute_Measurement_Resolution: 0.01
Attribute:
Attribute_Label: StDev_um
Attribute_Definition:
Standard deviation (root mean square of the deviations) of the grain-size distribution in microns (sorting).
Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 105.54
Range_Domain_Maximum: 215.43
Attribute_Units_of_Measure: microns
Attribute_Measurement_Resolution: 0.01
Attribute:
Attribute_Label: Skewness_um
Attribute_Definition:
Skewness (unitless deviation from symmetrical form) of the grain-size distribution in microns.
Attribute_Definition_Source:
modified from USGS East Coast Sediment Texture Database data dictionary
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.33
Range_Domain_Maximum: 1.62
Attribute_Units_of_Measure: microns
Attribute_Measurement_Resolution: 0.01
Attribute:
Attribute_Label: Kurtosis_um
Attribute_Definition:
Kurtosis (unitless degree of curvature near the mode) of the grain-size distribution in microns.
Attribute_Definition_Source:
modified from USGS East Coast Sediment Texture Database data dictionary
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 2.41
Range_Domain_Maximum: 6.67
Attribute_Units_of_Measure: microns
Attribute_Measurement_Resolution: 0.01
Attribute:
Attribute_Label: D10_um
Attribute_Definition:
Diameter at which 10% of the sample mass is comprised of sediment particles with a diameter less than this value.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 9.96
Range_Domain_Maximum: 317.05
Attribute_Units_of_Measure: microns
Attribute_Measurement_Resolution: 0.01
Attribute:
Attribute_Label: D25_um
Attribute_Definition:
Diameter at which 25% of the sample mass is comprised of sediment particles with a diameter less than this value.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 23.17
Range_Domain_Maximum: 391.80
Attribute_Units_of_Measure: microns
Attribute_Measurement_Resolution: 0.01
Attribute:
Attribute_Label: D50_um
Attribute_Definition:
Diameter at which 50% of the sample mass is comprised of sediment particles with a diameter less than this value and 50% is larger; middle point in the grain-size distribution in microns.
Attribute_Definition_Source:
modified from USGS East Coast Sediment Texture Database data dictionary
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 197.86
Range_Domain_Maximum: 485.45
Attribute_Units_of_Measure: microns
Attribute_Measurement_Resolution: 0.01
Attribute:
Attribute_Label: D75_um
Attribute_Definition:
Diameter at which 75% of the sample mass is comprised of sediment particles with a diameter less than this value.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 320.77
Range_Domain_Maximum: 620.98
Attribute_Units_of_Measure: microns
Attribute_Measurement_Resolution: 0.01
Attribute:
Attribute_Label: D90_um
Attribute_Definition:
Diameter at which 90% of the sample mass is comprised of sediment particles with a diameter less than this value.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 418.58
Range_Domain_Maximum: 756.27
Attribute_Units_of_Measure: microns
Attribute_Measurement_Resolution: 0.01
Attribute:
Attribute_Label: Phi_16
Attribute_Definition:
16 phi: weight percent of the sample in the 16 phi fraction and smaller (nominal diameter of particles less than 0.00003125 mm); colloid.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.000
Range_Domain_Maximum: 0.000
Attribute_Units_of_Measure: weight percent
Attribute_Measurement_Resolution: 0.001
Attribute:
Attribute_Label: Phi_15
Attribute_Definition:
15 phi: weight percent of the sample in the 15 phi fraction (nominal diameter of particles greater than or equal to 0.00003125 mm, but less than 0.0000625 mm); colloid.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.000
Range_Domain_Maximum: 0.000
Attribute_Units_of_Measure: weight percent
Attribute_Measurement_Resolution: 0.001
Attribute:
Attribute_Label: Phi_14
Attribute_Definition:
14 phi: weight percent of the sample in the 14 phi fraction (nominal diameter of particles greater than or equal to 0.0000625 mm, but less than 0.000125 mm); colloid.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.000
Range_Domain_Maximum: 0.000
Attribute_Units_of_Measure: weight percent
Attribute_Measurement_Resolution: 0.001
Attribute:
Attribute_Label: Phi_13
Attribute_Definition:
13 phi: weight percent of the sample in the 13 phi fraction (nominal diameter of particles greater than or equal to 0.000125 mm, but less than 0.00025 mm); fine clay.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.000
Range_Domain_Maximum: 0.233
Attribute_Units_of_Measure: weight percent
Attribute_Measurement_Resolution: 0.001
Attribute:
Attribute_Label: Phi_12
Attribute_Definition:
12 phi: weight percent of the sample in the 12 phi fraction (nominal diameter of particles greater than or equal to 0.00025 mm, but less than 0.0005 mm); fine clay.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.000
Range_Domain_Maximum: 1.596
Attribute_Units_of_Measure: weight percent
Attribute_Measurement_Resolution: 0.001
Attribute:
Attribute_Label: Phi_11
Attribute_Definition:
11 phi: weight percent of the sample in the 11 phi fraction (nominal diameter of particles greater than or equal to 0.0005 mm, but less than 0.001 mm); fine clay.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.000
Range_Domain_Maximum: 0.3635
Attribute_Units_of_Measure: weight percent
Attribute_Measurement_Resolution: 0.001
Attribute:
Attribute_Label: Phi_10
Attribute_Definition:
10 phi: weight percent of the sample in the 10 phi fraction (nominal diameter of particles greater than or equal to 0.001 mm, but less than 0.002 mm); medium clay.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.000
Range_Domain_Maximum: 0.000
Attribute_Units_of_Measure: weight percent
Attribute_Measurement_Resolution: 0.001
Attribute:
Attribute_Label: Phi_9
Attribute_Definition:
9 phi: weight percent of the sample in the 9 phi fraction (nominal diameter of particles greater than or equal to 0.002 mm, but less than 0.004 mm); coarse clay.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.000
Range_Domain_Maximum: 1.285
Attribute_Units_of_Measure: weight percent
Attribute_Measurement_Resolution: 0.001
Attribute:
Attribute_Label: Phi_8
Attribute_Definition:
8 phi: weight percent of the sample in the 8 phi fraction (nominal diameter of particles greater than or equal to 0.004 mm, but less than 0.008 mm); very fine silt.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.000
Range_Domain_Maximum: 4.940
Attribute_Units_of_Measure: weight percent
Attribute_Measurement_Resolution: 0.001
Attribute:
Attribute_Label: Phi_7
Attribute_Definition:
7 phi: weight percent of the sample in the 7 phi fraction (nominal diameter of particles greater than or equal to 0.008 mm, but less than 0.016 mm); fine silt.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.000
Range_Domain_Maximum: 11.179
Attribute_Units_of_Measure: weight percent
Attribute_Measurement_Resolution: 0.001
Attribute:
Attribute_Label: Phi_6
Attribute_Definition:
6 phi: weight percent of the sample in the 6 phi fraction (nominal diameter of particles greater than or equal to 0.016 mm, but less than 0.031 mm); medium silt.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.000
Range_Domain_Maximum: 11.784
Attribute_Units_of_Measure: weight percent
Attribute_Measurement_Resolution: 0.001
Attribute:
Attribute_Label: Phi_5
Attribute_Definition:
5 phi: weight percent of the sample in the 5 phi fraction (nominal diameter of particles greater than or equal to 0.031 mm, but less than 0.0625 mm); coarse silt.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.000
Range_Domain_Maximum: 6.875
Attribute_Units_of_Measure: weight percent
Attribute_Measurement_Resolution: 0.001
Attribute:
Attribute_Label: Phi_4
Attribute_Definition:
4 phi: weight percent of the sample in the 4 phi fraction (nominal diameters of particles greater than or equal to 0.0625 mm, but less than 0.125 mm); very fine sand.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.000
Range_Domain_Maximum: 5.545
Attribute_Units_of_Measure: weight percent
Attribute_Measurement_Resolution: 0.001
Attribute:
Attribute_Label: Phi_3
Attribute_Definition:
3 phi: weight percent of the sample in the 3 phi fraction (nominal diameter of particles greater than or equal to 0.125 mm, but less than 0.25 mm); fine sand.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 3.439
Range_Domain_Maximum: 46.661
Attribute_Units_of_Measure: weight percent
Attribute_Measurement_Resolution: 0.001
Attribute:
Attribute_Label: Phi_2
Attribute_Definition:
2 phi: weight percent of the sample in the 2 phi fraction (nominal diameter of particles greater than or equal to 0.25 mm, but less than 0.5 mm); medium sand.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 34.584
Range_Domain_Maximum: 73.032
Attribute_Units_of_Measure: weight percent
Attribute_Measurement_Resolution: 0.001
Attribute:
Attribute_Label: Phi_1
Attribute_Definition:
1 phi: weight percent of the sample in the 1 phi fraction (nominal diameter of particles greater than or equal to 0.5 mm, but less than 1 mm); coarse sand.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 3.379
Range_Domain_Maximum: 39.467
Attribute_Units_of_Measure: weight percent
Attribute_Measurement_Resolution: 0.001
Attribute:
Attribute_Label: Phi_0
Attribute_Definition:
0 phi: weight percent of the sample in the 0 phi fraction (nominal diameters of particles greater than or equal to 1 mm, but less than 2 mm); very coarse sand.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.000
Range_Domain_Maximum: 2.817
Attribute_Units_of_Measure: weight percent
Attribute_Measurement_Resolution: 0.001
Attribute:
Attribute_Label: Phi_M1
Attribute_Definition:
-1 phi: weight percent of the sample in the -1 phi fraction (nominal diameter of particles greater than or equal to 2 mm, but less than 4 mm); very fine pebbles (granules). M is for minus.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.000
Range_Domain_Maximum: 0.000
Attribute_Units_of_Measure: weight percent
Attribute_Measurement_Resolution: 0.001
Attribute:
Attribute_Label: Phi_M2
Attribute_Definition:
-2 phi: weight percent of the sample in the -2 phi fraction (nominal diameter of particles greater than or equal to 4 mm, but less than 8 mm); fine pebbles. M is for minus.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.000
Range_Domain_Maximum: 0.000
Attribute_Units_of_Measure: weight percent
Attribute_Measurement_Resolution: 0.001
Attribute:
Attribute_Label: Phi_M3
Attribute_Definition:
-3 phi: weight percent of the sample in the -3 phi fraction (nominal diameter of particles greater than or equal to 8 mm, but less than 16 mm); medium pebbles. M is for minus.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.000
Range_Domain_Maximum: 0.000
Attribute_Units_of_Measure: weight percent
Attribute_Measurement_Resolution: 0.001
Attribute:
Attribute_Label: Phi_M4
Attribute_Definition:
-4 phi: weight percent of the sample in the -4 phi fraction (nominal diameter of particles greater than or equal to 16 mm, but less than 32 mm); coarse pebbles. M is for minus.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.000
Range_Domain_Maximum: 0.000
Attribute_Units_of_Measure: weight percent
Attribute_Measurement_Resolution: 0.001
Attribute:
Attribute_Label: Phi_M5
Attribute_Definition:
-5 phi: weight percent of the sample in the -5 phi fraction (nominal diameter of particles greater than or equal to 32 mm, but less than 64 mm); very coarse pebbles. M is for minus.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.000
Range_Domain_Maximum: 0.000
Attribute_Units_of_Measure: weight percent
Attribute_Measurement_Resolution: 0.001
Attribute:
Attribute_Label: Phi_M6
Attribute_Definition:
-6 phi: weight percent of the sample in the -6 phi fraction and larger (nominal diameter of particles greater than or equal to 64 mm); cobbles and boulders. M is for minus.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.000
Range_Domain_Maximum: 0.000
Attribute_Units_of_Measure: weight percent
Attribute_Measurement_Resolution: 0.001
Attribute:
Attribute_Label: Analyst
Attribute_Definition:
Name (usually first, middle, and last initials) of person who performed the grain-size or physical properties analysis.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Unrepresentable_Domain: Character string.
Attribute:
Attribute_Label: Quality_grade
Attribute_Definition:
Samples are assigned a quality grade based on the examination of the analytical data. Data quality grades may be determined by several factors, such as consistency with samples collected from a geospatially adjacent location and consistency between replicate runs, and any comments or notes that indicate the data for a particular sample may be suspect are included in the results table for that sample under "comments". When considering replicate run values, if there is over a 10% difference between relative fraction percentages in this sample and the replicate, a quality grade of B will be assigned, over 15% would be assigned a C, and over 20% would be assigned a D. Quality grades for sample data that do not have any additional comments are assigned based on the calculated percent difference between the weights of the coarse fraction remaining after wet sieving and the sum of all of the weighed fractions after dry sieving the coarse fraction, indicating an estimated differing amount of material which could skew the calculated grain size results: A = percent differences between 0% and ±1.5%, B = percent differences between ±1.5% and ±3%, C = percent differences between ±3% and ±4.5%, and D = percent differences greater than ±4.5%. The quality grade is followed by a hyphen and the initials of the person who assigned the grade: BJB is Brian J Buczkowski; JDC is Jason D Chaytor; SJW is Sarah J Widlansky.
Attribute_Definition_Source:
modified from USGS East Coast Sediment Texture Database data dictionary
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: A
Enumerated_Domain_Value_Definition:
Percent differences between 0% and ±1.5%, there is less than 10% difference in relative fraction percentages between this sample and the replicate, or the results are consistent with expected values.
Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: B
Enumerated_Domain_Value_Definition:
Percent differences between ±1.5% and ±3%, there is greater than 10% and less than 15% difference in relative fraction percentages between this sample and the replicate, or the results are generally consistent with expected values.
Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: C
Enumerated_Domain_Value_Definition:
Percent differences between ±3% and ±4.5%, there is greater than 15% and less than 20% difference in relative fraction percentages between this sample and the replicate, or the results are somewhat consistent with expected values.
Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: D
Enumerated_Domain_Value_Definition:
Percent differences greater than ±4.5%, there is greater than 20% difference in relative fraction percentages between this sample and the replicate, or the results are inconsistent with expected values.
Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
Attribute:
Attribute_Label: Comments
Attribute_Definition:
Relevant comments on analytical observations or anomalies that may affect the quality of the data. Entries with no comments are left blank.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Unrepresentable_Domain: Character string.
Detailed_Description:
Entity_Type:
Entity_Type_Label:
2022034FA_NCB_JO01_LOI_results.csv and 2022034FA_NCB_JO01_LOI_results.xlsx
Entity_Type_Definition:
Data spreadsheet containing positions of the samples and the loss on ignition analysis results
Entity_Type_Definition_Source: Producer Defined
Attribute:
Attribute_Label: Sample_ID
Attribute_Definition:
Sample identification number assigned by the collecting scientist
Attribute_Definition_Source: Producer Defined
Attribute_Domain_Values:
Unrepresentable_Domain: character string
Attribute:
Attribute_Label: Analysis_ID
Attribute_Definition:
Sample identification number assigned in in the laboratory. This identifier begins with the assigned multi-letter code, which corresponds to the type of analysis performed on the sample (loss-on-ignition analysis), followed by a six-digit number assigned sequentially as samples are registered for analysis.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Unrepresentable_Domain: character string
Attribute:
Attribute_Label: Field_Activity_Number
Attribute_Definition:
Identification code assigned by the CMHRP data tracking system Compass
Attribute_Definition_Source: Producer Defined
Attribute_Domain_Values:
Unrepresentable_Domain: character string
Attribute:
Attribute_Label: Contact
Attribute_Definition: Contact for samples
Attribute_Definition_Source: Producer Defined
Attribute_Domain_Values:
Unrepresentable_Domain: character string
Attribute:
Attribute_Label: Area
Attribute_Definition: General area where samples were taken
Attribute_Definition_Source: Producer Defined
Attribute_Domain_Values:
Unrepresentable_Domain: character string
Attribute:
Attribute_Label: Latitude_DD
Attribute_Definition:
Latitude coordinate, in decimal-degrees, of sample location in NAD83(2011). South latitude recorded as negative values.
Attribute_Definition_Source: Producer Defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 34.90124
Range_Domain_Maximum: 34.90141
Attribute_Units_of_Measure: decimal degrees
Attribute:
Attribute_Label: Longitude_DD
Attribute_Definition:
Longitude coordinate, in decimal degrees, of sample location in NAD83(2011). West longitude is recorded as negative values.
Attribute_Definition_Source: Producer Defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -76.25471
Range_Domain_Maximum: -76.25464
Attribute_Units_of_Measure: decimal degrees
Attribute:
Attribute_Label: Depth_m
Attribute_Definition: Water depth at the location where the sample was collected
Attribute_Definition_Source: Producer Defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.515
Range_Domain_Maximum: 1.102
Attribute_Units_of_Measure: meters
Attribute_Measurement_Resolution: 0.001
Attribute:
Attribute_Label: T_Depth_cm
Attribute_Definition:
Depth of the top of the interval that was sampled for analysis as measured from the top of the sample
Attribute_Definition_Source: Producer Defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 0
Attribute_Units_of_Measure: centimeters
Attribute:
Attribute_Label: B_Depth_cm
Attribute_Definition:
Depth of the bottom of the interval that was sampled for analysis as measured from the top of the sample
Attribute_Definition_Source: Producer Defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 2
Range_Domain_Maximum: 2
Attribute_Units_of_Measure: centimeters
Attribute:
Attribute_Label: Device
Attribute_Definition: Device used to collect the sample
Attribute_Definition_Source: USGS East Coast Sediment Texture Database data dictionary
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Sampling scoop
Enumerated_Domain_Value_Definition: sample collected by hand with specialized trowel
Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
Attribute:
Attribute_Label: Date_Collected_MM/DD/YYYY
Attribute_Definition:
Date that sample was collected. Format: MM/DD/YYYY (MM=Month) (DD=Day) (YYYY=Year)
Attribute_Definition_Source: Producer Defined
Attribute_Domain_Values:
Unrepresentable_Domain: character string
Attribute:
Attribute_Label: Date_Analyzed_MM/DD/YYYY
Attribute_Definition:
Date that CC-LOI analysis was completed. Format: MM/DD/YYYY (MM=Month) (DD=Day) (YYYY=Year)
Attribute_Definition_Source: Producer Defined
Attribute_Domain_Values:
Unrepresentable_Domain: character string
Attribute:
Attribute_Label: Crucible_Wt_g
Attribute_Definition: Weight of crucible in which sample was heated for CC-LOI
Attribute_Definition_Source: Producer Defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 27.1485
Range_Domain_Maximum: 29.0714
Attribute_Units_of_Measure: grams
Attribute_Measurement_Resolution: 0.0001
Attribute:
Attribute_Label: Gross_Initial_Wt_g
Attribute_Definition:
Combined weight of crucible and powdered sample, prior to heating
Attribute_Definition_Source: Producer Defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 32.5311
Range_Domain_Maximum: 34.9460
Attribute_Units_of_Measure: grams
Attribute_Measurement_Resolution: 0.0001
Attribute:
Attribute_Label: Sample_Initial_Wt_g
Attribute_Definition:
Initial weight of sample, calculated from gross initial weight minus crucible weight
Attribute_Definition_Source: Producer Defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 5.3826
Range_Domain_Maximum: 5.8746
Attribute_Units_of_Measure: grams
Attribute_Measurement_Resolution: 0.0001
Attribute:
Attribute_Label: Gross_Sample_Wt_550C_g
Attribute_Definition:
Combined weight of crucible and sample after heating to 550 degrees Celsius for 3 hours
Attribute_Definition_Source: Producer Defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 32.3261
Range_Domain_Maximum: 34.7682
Attribute_Units_of_Measure: grams
Attribute_Measurement_Resolution: 0.0001
Attribute:
Attribute_Label: Sample_Wt_550C_g
Attribute_Definition:
Sample weight after heating to 550 degrees C for 3 hours, calculated from Gross_Sample_Wt_550C_g minus Crucible_Wt_g
Attribute_Definition_Source: Producer Defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 5.1776
Range_Domain_Maximum: 5.6968
Attribute_Units_of_Measure: grams
Attribute_Measurement_Resolution: 0.0001
Attribute:
Attribute_Label: Sample_WtLoss_550C_g
Attribute_Definition:
Weight differential between initial sample weight and sample weight after heating at 550 degrees Celsius for 3 hours
Attribute_Definition_Source: Producer Defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.1778
Range_Domain_Maximum: 0.2050
Attribute_Units_of_Measure: grams
Attribute_Measurement_Resolution: 0.0001
Attribute:
Attribute_Label: Bulk_Organic_Matter_WtPct
Attribute_Definition:
Weight percent of organic matter and carbon lost while heating sample to 550 degrees C for 3 hours; calculated as the percent of sample weight lost divided by initial sample weight.
Attribute_Definition_Source: Producer Defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 3.0266
Range_Domain_Maximum: 3.0809
Attribute_Units_of_Measure: weight percent
Attribute_Measurement_Resolution: 0.0001
Overview_Description:
Entity_and_Attribute_Overview:
These data are available in CSV and XLSX format. The first line of the CSV file is a header line, and those labels are the same as defined in the attribute section. The CSV has data values with the established resolution in the attribute section above, the excel file has significant figures beyond the instrument precision.
Entity_and_Attribute_Detail_Citation: USGS Field Activities 2022-034-FA
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey - ScienceBase
Contact_Address:
Address_Type: mailing address
Address: Denver Federal Center, Building 810, Mail Stop 302
City: Denver
State_or_Province: CO
Postal_Code: 80225
Country: United States
Contact_Voice_Telephone: 1-888-275-8747
Contact_Electronic_Mail_Address: sciencebase@usgs.gov
Resource_Description:
This dataset contains grain-size and organics analysis of sediment samples collected on North Core Banks in October 2022.
Distribution_Liability:
Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data for other purposes, nor on all computer systems, nor shall the act of distribution constitute any such warranty. Although these data have been processed successfully on a computer system at the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data for other purposes, nor on all computer systems, nor shall the act of distribution constitute any such warranty. The USGS or the U.S. Government shall not be held liable for improper or incorrect use of the data described and/or contained herein.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: CSV
Format_Information_Content:
Comma Separated Values (CSV) file saved from Microsoft Excel for Microsoft 365 MSO 32-bit.
Transfer_Size: 0.018
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information: Access_Instructions:
The first link downloads all the files on the child page. The second link is to the page to download files individually. And the third link is the DOI link which goes to the landing page of the data release.
Digital_Form:
Digital_Transfer_Information:
Format_Name: XLSX
Format_Version_Number: Excel Office 365 16.01
Format_Information_Content:
The Excel file was distributed by the Woods Hole Sediment Analysis Laboratory.
Transfer_Size: 0.069
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information: Access_Instructions:
The first link downloads all the files on the child page. The second link is to the page to download files individually. And the third link is the DOI link which goes to the landing page of the data release.
Fees: None
Metadata_Reference_Information:
Metadata_Date: 20240122
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Jin-Si R. Over
Contact_Organization:
U.S. Geological Survey, Woods Hole Coastal and Marine Science Center
Contact_Position: Geographer
Contact_Address:
Address_Type: mailing and physical
Address: U.S. Geological Survey
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Contact_Voice_Telephone: 508-548-8700 x2297
Contact_Electronic_Mail_Address: whsc_data_contact@usgs.gov
Contact_Instructions:
The metadata contact email address is a generic address in the event the person is no longer with USGS.
Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998

This page is <https://cmgds.marine.usgs.gov/catalog/whcmsc/SB_data_release/DR_P99IV3FC/2022034FA_NCB_SedimentSamples_meta.html>
Generated by mp version 2.9.51 on Mon Jan 22 11:50:41 2024