Metadata: Identification_Information: Citation: Citation_Information: Originator: Cheyenne S. Everhart Originator: Emily A. Wei Publication_Date: 20220720 Title: Grain-Size and Site Data From Sediment Samples Collected at Seven Mile Island, New Jersey and Rockaway Peninsula, New York, Between May 2021 and June 2021 Geospatial_Data_Presentation_Form: tabular digital data, vector digital data Larger_Work_Citation: Citation_Information: Originator: Cheyenne S. Everhart Originator: Emily A. Wei Originator: Jennifer L. Miselis Publication_Date: 20220720 Title: Grain-Size Data From Sediment Samples at Seven Mile Island, New Jersey and Rockaway Peninsula, New York Series_Information: Series_Name: U.S. Geological Survey data release Issue_Identification: doi:10.5066/P9FH8ZJW Publication_Information: Publication_Place: St. Petersburg, Florida Publisher: U.S. Geological Survey - St. Petersburg Coastal and Marine Science Center Online_Linkage: https://doi.org/10.5066/P9FH8ZJW Description: Abstract: Sediment grab samples were collected from one onshore location and 32 undisturbed locations along the seafloor around Seven Mile Island, New Jersey (NJ) and Rockaway Peninsula, New York (NY). The sediment grab samples were collected in May and June of 2021 at locations within the area where multibeam bathymetry surveys were also conducted during the same trip. All sediment samples were analyzed using a laser diffraction Coulter LS13 320 particle-size analyzer to measure the grain size distribution of the sediments. All the samples within the dataset are referred to by field activity numbers (FANs) 2021-318-FA and 2021-319-FA and are part of the Coastal Sediment Availability and Flux (CSAF) research project which collects geophysical, remote sensing and sediment data to inform models for improving prediction of coastal systems’ response to extreme weather and sea-level rise. For further information regarding data collection and/or processing methods for this data release, refer to Wei and Miselis (2022). Purpose: Disseminate sample location data, raw, and processed grain-size data from sediment surface grab samples collected from Seven Mile Island, NJ in May 2021 and Rockaway Peninsula, NY in June of 2021 (FANs 2021-318-FA and 2021-319-FA). Supplemental_Information: To ensure that U.S. Geological Survey (USGS) St. Petersburg Coastal and Marine Science Center (SPCMSC) data management protocols were followed, these survey were assigned the following USGS field activity numbers: 2021-318-FA and 2021-319-FA. Additional survey and data details are available from the USGS Coastal and Marine Geoscience Data System (CMGDS) at, https://cmgds.marine.usgs.gov/. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20210520 Ending_Date: 20210625 Currentness_Reference: Ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -74.776901 East_Bounding_Coordinate: -73.764508 North_Bounding_Coordinate: 40.591265 South_Bounding_Coordinate: 39.015752 Keywords: Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:836b0545-dcc0-47fc-9ad9-f9cc90893b56 Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: geoscientificinformation Theme_Keyword: location Theme_Keyword: environment Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: geology Theme_Keyword: unconsolidated deposits Theme_Keyword: field sampling Theme_Keyword: grain-size analysis Theme_Keyword: grab sampling Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: sediment Theme_Keyword: grain-size Theme_Keyword: GRADISTAT Theme_Keyword: ponar grab Theme_Keyword: U.S. Geological Survey Theme_Keyword: USGS Theme_Keyword: Coastal and Marine Hazards and Resources Program Theme_Keyword: CMHRP Place: Place_Keyword_Thesaurus: Geographic Names Information System (GNIS) Place_Keyword: New Jersey Place_Keyword: New York Place_Keyword: Cape May County Place_Keyword: Queens County Place_Keyword: Atlantic Ocean Access_Constraints: None Use_Constraints: Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. The U.S. Geological Survey requests that it be acknowledged as the originator of this dataset in any future products or research derived from these data. Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Emily A. Wei Contact_Position: Research Geologist Contact_Address: Address_Type: Mailing and physical Address: 600 4th Street South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: USA Contact_Voice_Telephone: 727-502-8000 Contact_Electronic_Mail_Address: ewei@usgs.gov Data_Set_Credit: Acknowledgment of the U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center, as a data source would be appreciated in products developed from these data. The authors would like to thank Andrew Farmer, BJ Reynolds, and Chelsea Stalk for their hard work collecting sediment samples in the field. This document was improved by the scientific and metadata reviews of Julie Bernier and Breanna Williams. Native_Data_Set_Environment: Microsoft Windows 10; Microsoft Excel version 2102; GRADISTAT version 8.0; Esri ArcMap version 10.6 Cross_Reference: Citation_Information: Originator: Wei, E.A., and Miselis, J.L. Publication_Date: 20220720 Title: Geologic framework, anthropogenic impacts, and hydrodynamics contribute to variable sediment availability and shoreface morphology at the Rockaway Peninsula, NY Series_Information: Series_Name: Journal of Marine Science and Engineering Issue_Identification: Volume 10, Issue 7 Other_Citation_Details: Pages 989 Online_Linkage: https://doi.org/10.3390/jmse10070989 Cross_Reference: Citation_Information: Originator: Beckman Coulter Publication_Date: 201110 Title: LS 13 320 laser diffraction particle size analyzer instructions for use Online_Linkage: https://www.beckmancoulter.com/wsrportal/techdocs?docname=B05577AB.pdf Cross_Reference: Citation_Information: Originator: Blott, S.J. and Pye, K. Publication_Date: 20010928 Title: GRADISTAT: A grain size distribution and statistics package for the analysis of unconsolidated sediments Edition: Version 8.0 Series_Information: Series_Name: Earth Surface Processes and Landforms Issue_Identification: Volume 26, Issue 11 Other_Citation_Details: Pages 1237-1248 Online_Linkage: http://www.kpal.co.uk/gradistat.html Online_Linkage: https://doi.org/10.1002/esp.261 Cross_Reference: Citation_Information: Originator: Folk, R.L, and Ward, W.C. Publication_Date: 19570301 Title: Brazos River bar: A study in the significance of grain size parameters Series_Information: Series_Name: Journal of Sedimentary Petrology Issue_Identification: Volume 27, No. 1 Other_Citation_Details: Pages 3-26 Online_Linkage: https://doi.org/10.1306/74D70646-2B21-11D7-8648000102C1865D Cross_Reference: Citation_Information: Originator: Krumbein, W.C. Publication_Date: 19340801 Title: Size frequency distributions of sediments Series_Information: Series_Name: Journal of Sedimentary Petrology Issue_Identification: Volume 4, No. 2 Other_Citation_Details: Pages 65-77 Online_Linkage: https://doi.org/10.1306/D4268EB9-2B26-11D7-8648000102C1865D Cross_Reference: Citation_Information: Originator: Wentworth, C.K. Publication_Date: 1922 Title: A scale of grade and class terms for clastic sediments Series_Information: Series_Name: Journal of Geology Issue_Identification: Volume 30, No. 5 Other_Citation_Details: Pages 377-392 Online_Linkage: https://www.jstor.org/stable/30063207 Cross_Reference: Citation_Information: Originator: Folk, R.L. Publication_Date: 195407 Title: The distinction between grain size and mineral composition in sedimentary-rock nomenclature Series_Information: Series_Name: Journal of Geology Issue_Identification: Volume 62, No. 4 Other_Citation_Details: Pages 344-359 Online_Linkage: https://doi.org/10.1086/626171 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: The grain-size data represent the sample averages for a subset of the statistical parameters calculated by GRADISTAT (Blott and Pye, 2001). The number of runs included in the averaged results are reported, and the standard deviation of the averaged results are reported for most parameters. There was not enough material available to run a second subsample for 2021-318-FA-SMI15. Only four runs were used to calculate the averaged statistical parameters for 2021-318-FA-SMI15, but the overall data quality was still judged to be reliable. A secondary data review determined that all grain-size data reported met the laboratory’s quality control requirements. Beckman Coulter control standards G15 (15 microns [µm]) and GB500 (500 µm) were analyzed on the Coulter LS13 320 particle-size analyzer before all sediment samples were analyzed to validate instrument performance (Beckman Coulter, 2011). Logical_Consistency_Report: The grain-size sample runs in the GRADISTAT output files for which the mean Folk and Ward (1957) grain-size varied from the set average by more than 1.5 standard deviations are highlighted in yellow and were not included in final averaged results. Completeness_Report: This data release doi:10.5066/P9FH8ZJW contains all grain-size data associated with USGS FANs 2021-318-FA and 2021-319-FA. It includes the geographic site location and grain-size statistics for all sediment samples collected at Seven Mile Island, NJ and Rockaway Peninsula, NY during May and June of 2021. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Sample locations were recorded at the time of collection using the same navigation system associated with coincident multibeam surveys, Applanix Pos MV Wavemaster II V5. The Applanix collected position information in the World Geodetic System of 1984 (WGS84) datum. The horizontal accuracy of this system is within <0.1 meters. The sample location for the onshore Rockaway sample, RKWY70, was recorded using a Global Positioning System (GPS)`-enabled smartphone. The accuracy of most GPS-enabled smartphones is within 4.9 meters. Lineage: Process_Step: Process_Description: Surface sediment grabs were collected by USGS scientists from the Research Vessel (R/V) Sallenger off the coast of Seven Mile Island, NJ and Rockaway Peninsula, NY. The marine sediment grabs were collected in May 2021 and June 2021 during the same time interval as the multibeam bathymetric surveys. A Petite Ponar grab sampler was used to sample sediment from a previously undisturbed layer of sediment atop the seafloor to ensure all grain sizes were sampled. The only onshore sample collected was on Rockaway Beach from an exposed alluvium section from the undercut boardwalk (sample identifier RKWY70). The surficial layer was scraped away before RKWY70 was sampled by hand. Samples were brought back to the SPCMSC Sediment Laboratory for analysis. Process_Date: 20210625 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Emily A. Wei Contact_Position: Research Geologist Contact_Address: Address_Type: Mailing and physical Address: 600 4th Street South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: USA Contact_Voice_Telephone: (727) 502-8000 Contact_Electronic_Mail_Address: ewei@usgs.gov Process_Step: Process_Description: Particle-size analysis was performed on all the sediment grabs collected from the Rockaway Peninsula, NY and Seven Mile Island, NY study sites. Grain-size analyses on the samples were performed using a Coulter LS13 320 (https://www.beckmancoulter.com/) particle-size analyzer (PSA), that uses laser diffraction to measure the size distribution of sediments from 0.4 microns to 2 millimeters (mm), encompassing clay to very coarse-grained sand. To prevent large shell fragments from damaging the instrument, particles greater than 1 mm in diameter were separated from all samples prior to analysis using a number 18 (1 mm) U.S. standard sieve, which meets the American Society for Testing and Materials (ASTM) E11 standard specifications for determining particle size using woven-wire test sieves. For any dry sediments, the material removed by sieving at 1 mm is recorded and reported as a percent of the total bulk dry weight with the final processed grain-size data. Two subsamples from each sample were processed through the instrument a minimum of four runs each. Once introduced into the Coulter PSA, the sediment in the sample well was sonicated with a sonicator wand for 30 seconds to separate any aggregates before starting the first run for both subsamples. The Coulter PSA measures the particle-size distribution of each sample by passing sediment suspended in solution between two narrow panes of glass in front of a laser. Light is scattered by the particles into characteristic refraction patterns measured by an array of photodetectors as intensity per unit area and recorded as relative volume for 92 size-related channels (bins). Process_Date: 20210901 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Cheyenne S. Everhart Contact_Position: Physical Scientist Contact_Address: Address_Type: Mailing and physical Address: 600 4th Street South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: USA Contact_Voice_Telephone: (727) 502-8000 Contact_Electronic_Mail_Address: ceverhart@usgs.gov Process_Step: Process_Description: All raw grain-size data was run through the free software GRADISTAT version 8, (Blott and Pye, 2001; kpal.co.uk/gradistat), which calculates the mean, sorting, skewness and kurtosis of each sample geometrically, in metric units and logarithmically in phi units (Φ) (Krumbein, 1934) using the Folk and Ward (1957) scale. The compilation of the raw Coulter output files for all grain-size samples as they appear imported into GRADISTAT, before any statistics have been computed, is included in this data release for advanced users. GRADISTAT also calculates the fraction of sediment from each sample by size category (for example, clay, coarse silt, fine sand) based on a modified Wentworth (1922) size scale. A macro function in Microsoft Excel, developed by the USGS SPCMSC, was applied to the data to calculate average and standard deviation for each sample set (8 runs per sample), and highlight runs that varied from the set average by more than ±1.5 standard deviations. Excessive deviations from the mean are likely the result of equipment error or extraneous organic material in the sample and are not considered representative of the sample. The highlighted runs were removed from the results and the sample average was recalculated using the remaining runs. The averaged results for all samples, including the number of averaged runs and the standard deviation of the averaged results, were summarized in an Excel workbook with samples from each FAN on its own tab. A comma-separated values (CSV) data file containing the tabular data in plain text is included in the download file. Process_Date: 202109 Source_Produced_Citation_Abbreviation: SMI_RKWY_RawCoulterOutput.csv Source_Produced_Citation_Abbreviation: SMI_RKWY_GrainSize.csv Source_Produced_Citation_Abbreviation: SMI_RKWY_GrainSize.xlsx Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Cheyenne S. Everhart Contact_Position: Physical Scientist Contact_Address: Address_Type: Mailing and physical Address: 600 4th Street South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: USA Contact_Voice_Telephone: (727) 502-8000 Contact_Electronic_Mail_Address: ceverhart@usgs.gov Process_Step: Process_Description: The summary statistics files were appended with sample location attributes (latitude, longitude, and location description). These sample locations and selected grain-size metrics were imported into Esri ArcMap version 10.6 to create shapefiles (.shp). The conversion tool within ArcToolBox was used to convert the shapefiles into Keyhole Markup Language Zipped (.kmz) files. Process_Date: 20220705 Source_Produced_Citation_Abbreviation: SMI_GrainSizeSites.csv; RKWY_GrainSizeSites.csv Source_Produced_Citation_Abbreviation: SMI_GrainSizeSites.shp; RKWY_GrainsSizeSites.shp Source_Produced_Citation_Abbreviation: SMI_GrainSizeSites.kmz; RKWY_GrainsSizeSites.kmz Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Cheyenne S. Everhart Contact_Position: Physical Scientist Contact_Address: Address_Type: Mailing and physical Address: 600 4th Street South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: USA Contact_Voice_Telephone: (727) 502-8000 Contact_Electronic_Mail_Address: ceverhart@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 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geodetic_Model: Horizontal_Datum_Name: World Geodetic System of 1984 (WGS84) Ellipsoid_Name: WGS_1984 Semi-major_Axis: 6378137.0 Denominator_of_Flattening_Ratio: 298.257223563 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: SMI_RKWY_GrainSize.csv; SMI_RKWY_GrainSize.xlsx Entity_Type_Definition: Comma-separated values text (.csv) file and Microsoft Excel workbook (.xslx) summarizing grain-size parameters for each sediment grabs collected in Seven Mile Island, NJ and Rockaway Peninsula, NY (USGS FANs 2021-318-FA and 2021-319-FA). The averaged results for each sample, including the number of runs used, and the standard deviation of the averaged results are provided. For full entity and attribute details, please refer to the accompanying data dictionary, SMI_RKWY_GrainSize_DataDictionary.docx in SMI_RKWY_GrainSizeStats.zip. Entity_Type_Definition_Source: USGS Detailed_Description: Entity_Type: Entity_Type_Label: SMI_RKWY_RawCoulterOutput.csv Entity_Type_Definition: Comma-separated values text (.csv) file containing the raw Coulter output of the class weight retained in each aperture bin as a percent of the total for each sediment grab collected in Seven Mile Island, NJ and Rockaway Peninsula, NY (USGS FANs 2021-318-FA and 2021-319-FA). Entity_Type_Definition_Source: USGS Attribute: Attribute_Label: Sample Identity: Attribute_Definition: Sample identification name Attribute_Definition_Source: USGS Attribute_Domain_Values: Unrepresentable_Domain: Character string containing the sample identification information and set number. Attribute: Attribute_Label: Analyst: Attribute_Definition: Last name of the person analyzing the sample on the laser diffraction Coulter LS13 320 particle-size analyzer. Attribute_Definition_Source: USGS Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Everhart Enumerated_Domain_Value_Definition: Cheyenne Everhart of the USGS SPCMSC conducted the analysis of the sample. Enumerated_Domain_Value_Definition_Source: USGS Attribute: Attribute_Label: Date: Attribute_Definition: Date and time the sample was analyzed in MM/DD/YYYY HH:MM:SS AM/PM format. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 8/9/2021 3:38:00 PM Range_Domain_Maximum: 9/1/2021 3:12:00 PM Attribute: Attribute_Label: Aperture (microns) Attribute_Definition: Coulter software bin aperture, in microns Attribute_Definition_Source: Beckman Coulter LS13 320 Software Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.375 Range_Domain_Maximum: 1822 Attribute: Attribute_Label: Class Weight Retained (%) Attribute_Definition: The percent of that class weight retained of the total sample for the given bin aperature Attribute_Definition_Source: Beckman Coulter LS13 320 Software Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 15.3 Detailed_Description: Entity_Type: Entity_Type_Label: SMI_GrainSizeSites.csv; SMI_GrainSizeSites.shp; SMI_GrainSizeSites.kmz Entity_Type_Definition: Comma-separated values text files (.csv), Esri shapefiles (.shp), and Keyhole Markup Language, Zipped (.kmz) files defining the sample locations and selected grain-size metrics for sediment samples collected from Seven Mile Island, NJ. Entity_Type_Definition_Source: USGS Attribute: Attribute_Label: FID Attribute_Definition: Internal feature number Attribute_Definition_Source: Esri Attribute_Domain_Values: Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated Attribute: Attribute_Label: Shape Attribute_Definition: Feature geometry Attribute_Definition_Source: Esri Attribute_Domain_Values: Unrepresentable_Domain: Geometry type defining the features Attribute: Attribute_Label: SAMPLE_ID Attribute_Definition: Sample identification name assigned to sediment grabs collected from Seven Mile Island, NJ. Attribute_Definition_Source: USGS Attribute_Domain_Values: Unrepresentable_Domain: The sample ID was assigned using the following convention: the FAN (2021-318-FA), followed by a dash “SMI”, and a double-digit number. Example: 2021-318-FA-SMI-05. Attribute: Attribute_Label: WGS84_LAT Attribute_Definition: Latitude of sample location, in decimal degrees (WGS84) Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 39.015752 Range_Domain_Maximum: 39.098590 Attribute_Units_of_Measure: Decimal Degrees Attribute_Measurement_Resolution: 0.000001 Attribute: Attribute_Label: WGS84_LON Attribute_Definition: Longitude of sample location, in decimal degrees (WGS84) Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -74.776901 Range_Domain_Maximum: -73.769164 Attribute_Units_of_Measure: Decimal Degrees Attribute_Measurement_Resolution: 0.000001 Attribute: Attribute_Label: LOCATION Attribute_Definition: Coastal region describing the sample location Attribute_Definition_Source: USGS Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Seven Mile Island Enumerated_Domain_Value_Definition: The sediment sample grab was collected at Seven Mile Island, NJ. Enumerated_Domain_Value_Definition_Source: USGS Attribute: Attribute_Label: DATE Attribute_Definition: Date of field collection Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 5/20/2021 Range_Domain_Maximum: 5/20/2021 Attribute: Attribute_Label: TEXTURE Attribute_Definition: Sediment texture, after Folk (1954) Attribute_Definition_Source: GRADISTAT Attribute_Domain_Values: Unrepresentable_Domain: Character string: sand, muddy sand, or sandy mud. Attribute: Attribute_Label: MEAN_um Attribute_Definition: Sample mean grain size, in microns Attribute_Definition_Source: GRADISTAT Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 8.10 Range_Domain_Maximum: 550.84 Attribute_Units_of_Measure: Microns Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: SORTING_um Attribute_Definition: Sample sorting - the standard deviation of the grain size distribution, in microns Attribute_Definition_Source: GRADISTAT Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1.339 Range_Domain_Maximum: 5.104 Attribute_Units_of_Measure: Microns Attribute_Measurement_Resolution: 0.001 Attribute: Attribute_Label: SKEWNESS_um Attribute_Definition: Sample skewness - deviation of the grain size distribution from symmetrical, in microns Attribute_Definition_Source: GRADISTAT Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.744 Range_Domain_Maximum: 0.261 Attribute_Units_of_Measure: Microns Attribute_Measurement_Resolution: 0.001 Attribute: Attribute_Label: KURTOSISum Attribute_Definition: Sample kurtosis - degree of curvature near the mode of the grain size distribution, in microns Attribute_Definition_Source: GRADISTAT Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.817 Range_Domain_Maximum: 2.767 Attribute_Units_of_Measure: Microns Attribute_Measurement_Resolution: 0.001 Attribute: Attribute_Label: MEAN_phi Attribute_Definition: Sample mean grain size, in phi units Attribute_Definition_Source: GRADISTAT Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.860 Range_Domain_Maximum: 6.949 Attribute_Units_of_Measure: Phi Attribute_Measurement_Resolution: 0.001 Attribute: Attribute_Label: MEAN Attribute_Definition: Physical description of sample mean grain size (descriptive) Attribute_Definition_Source: GRADISTAT Attribute_Domain_Values: Unrepresentable_Domain: Character string: coarse sand, coarse silt, fine sand, medium sand, medium silt, or very fine sand. Attribute: Attribute_Label: SORTING Attribute_Definition: Physical description of sample sorting (descriptive) Attribute_Definition_Source: GRADISTAT Attribute_Domain_Values: Unrepresentable_Domain: Character string: moderately sorted, moderately well sorted, poorly sorted, very poorly sorted, or well sorted. Attribute: Attribute_Label: SKEWNESS Attribute_Definition: Physical description of sample skewness (descriptive) Attribute_Definition_Source: GRADISTAT Attribute_Domain_Values: Unrepresentable_Domain: Character string: coarse skewed, fine skewed, symmetrical, or very fine skewed. Attribute: Attribute_Label: KURTOSIS Attribute_Definition: Physical description of sample kurtosis (descriptive) Attribute_Definition_Source: GRADISTAT Attribute_Domain_Values: Unrepresentable_Domain: Character string: leptokurtic, mesokurtic, platykurtic, or very leptokurtic. Attribute: Attribute_Label: D10_um Attribute_Definition: Particle diameter representing the 10% cumulative percentile value (10% of the particles in the sediment sample are finer than the D10 grain size), in microns Attribute_Definition_Source: GRADISTAT Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1.01 Range_Domain_Maximum: 268.39 Attribute_Units_of_Measure: Microns Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: D50_um Attribute_Definition: Particle diameter representing the 50% cumulative percentile value (10% of the particles in the sediment sample are finer than the D50 grain size), in microns Attribute_Definition_Source: GRADISTAT Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 8.38 Range_Domain_Maximum: 579.19 Attribute_Units_of_Measure: Microns Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: D90_um Attribute_Definition: Particle diameter representing the 90% cumulative percentile value (10% of the particles in the sediment sample are finer than the D90 grain size), in microns Attribute_Definition_Source: GRADISTAT Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 78.25 Range_Domain_Maximum: 873.12 Attribute_Units_of_Measure: Microns Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: SAND_pct Attribute_Definition: Total sand fraction of the sediment sample, in percent Attribute_Definition_Source: GRADISTAT Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 12.6 Range_Domain_Maximum: 100 Attribute_Units_of_Measure: Percent Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: MUD_pct Attribute_Definition: Total mud fraction of the sediment sample, in percent Attribute_Definition_Source: GRADISTAT Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.8 Range_Domain_Maximum: 87.4 Attribute_Units_of_Measure: Percent Attribute_Measurement_Resolution: 0.01 Detailed_Description: Entity_Type: Entity_Type_Label: RKWY_GrainSizeSites.csv; RKWY_GrainSizeSites.shp; RKWY_GrainSizeSites.kmz Entity_Type_Definition: Comma-separated values text files (.csv), Esri shapefiles (.shp), and Keyhole Markup Language Zipped (.kmz) files defining the sample locations and selected grain-size metrics for sediment samples collected from Rockaway Peninsula, NY. Entity_Type_Definition_Source: USGS Attribute: Attribute_Label: FID Attribute_Definition: Internal feature number Attribute_Definition_Source: Esri Attribute_Domain_Values: Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated Attribute: Attribute_Label: Shape Attribute_Definition: Feature geometry Attribute_Definition_Source: Esri Attribute_Domain_Values: Unrepresentable_Domain: Geometry type defining the features Attribute: Attribute_Label: SAMPLE_ID Attribute_Definition: Sample identification name assigned to sediment grabs collected on Rockaway Peninsula, NY. Attribute_Definition_Source: USGS Attribute_Domain_Values: Unrepresentable_Domain: The sample ID was assigned using the following convention: the FAN (2021-319-FA), followed by a dash “RKWY”, and a double-digit number. Example: 2021-319-FA-RKWY-22 Attribute: Attribute_Label: WGS84_LAT Attribute_Definition: Latitude of sample location, in decimal degrees (WGS84) Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 40.533981 Range_Domain_Maximum: 40.591265 Attribute_Units_of_Measure: Decimal Degrees Attribute_Measurement_Resolution: 0.000001 Attribute: Attribute_Label: WGS84_LON Attribute_Definition: Longitude of sample location, in decimal degrees (WGS84) Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -73.764508 Range_Domain_Maximum: -73.928698 Attribute_Units_of_Measure: Decimal Degrees Attribute_Measurement_Resolution: 0.000001 Attribute: Attribute_Label: LOCATION Attribute_Definition: Coastal region describing the sample location Attribute_Definition_Source: USGS Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Rockaway Peninsula Enumerated_Domain_Value_Definition: The sediment sample grab was collected from Rockaway Peninsula, NY. Enumerated_Domain_Value_Definition_Source: USGS Attribute: Attribute_Label: DATE Attribute_Definition: Date of field collection Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 6/17/2021 Range_Domain_Maximum: 6/25/2021 Attribute: Attribute_Label: TEXTURE Attribute_Definition: Sediment texture, after Folk (1954) Attribute_Definition_Source: GRADISTAT Attribute_Domain_Values: Unrepresentable_Domain: Character string: muddy sand, or sand. Attribute: Attribute_Label: MEAN_um Attribute_Definition: Sample mean grain size, in microns Attribute_Definition_Source: GRADISTAT Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 64.62 Range_Domain_Maximum: 307.78 Attribute_Units_of_Measure: Microns Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: SORTING_um Attribute_Definition: Sample sorting - the standard deviation of the grain size distribution, in microns Attribute_Definition_Source: GRADISTAT Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1.265 Range_Domain_Maximum: 3.415 Attribute_Units_of_Measure: Microns Attribute_Measurement_Resolution: 0.001 Attribute: Attribute_Label: SKEWNESS_um Attribute_Definition: Sample skewness - deviation of the grain size distribution from symmetrical, in microns Attribute_Definition_Source: GRADISTAT Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.668 Range_Domain_Maximum: 0.241 Attribute_Units_of_Measure: Microns Attribute_Measurement_Resolution: 0.001 Attribute: Attribute_Label: KURTOSISum Attribute_Definition: Sample kurtosis - degree of curvature near the mode of the grain size distribution, in microns Attribute_Definition_Source: GRADISTAT Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.943 Range_Domain_Maximum: 2.233 Attribute_Units_of_Measure: Microns Attribute_Measurement_Resolution: 0.001 Attribute: Attribute_Label: MEAN_phi Attribute_Definition: Sample mean grain size, in phi units Attribute_Definition_Source: GRADISTAT Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1.70 Range_Domain_Maximum: 3.962 Attribute_Units_of_Measure: Phi Attribute_Measurement_Resolution: 0.001 Attribute: Attribute_Label: MEAN Attribute_Definition: Physical description of sample mean grain size (descriptive) Attribute_Definition_Source: GRADISTAT Attribute_Domain_Values: Unrepresentable_Domain: Character string: medium sand, fine sand, or very fine sand. Attribute: Attribute_Label: SORTING Attribute_Definition: Physical description of sample sorting (descriptive) Attribute_Definition_Source: GRADISTAT Attribute_Domain_Values: Unrepresentable_Domain: Character string: moderately sorted, moderately well sorted, poorly sorted, very well sorted, or well sorted. Attribute: Attribute_Label: SKEWNESS Attribute_Definition: Physical description of sample skewness (descriptive) Attribute_Definition_Source: GRADISTAT Attribute_Domain_Values: Unrepresentable_Domain: Character string: coarse skewed, fine skewed, symmetrical, or very fine skewed. Attribute: Attribute_Label: KURTOSIS Attribute_Definition: Physical description of sample kurtosis (descriptive) Attribute_Definition_Source: GRADISTAT Attribute_Domain_Values: Unrepresentable_Domain: Character string: leptokurtic, mesokurtic, or very leptokurtic. Attribute: Attribute_Label: D10_um Attribute_Definition: Particle diameter representing the 10% cumulative percentile value (10% of the particles in the sediment sample are finer than the D10 grain size), in microns Attribute_Definition_Source: GRADISTAT Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 6.51 Range_Domain_Maximum: 184.21 Attribute_Units_of_Measure: Microns Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: D50_um Attribute_Definition: Particle diameter representing the 50% cumulative percentile value (10% of the particles in the sediment sample are finer than the D50 grain size), in microns Attribute_Definition_Source: GRADISTAT Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 101.19 Range_Domain_Maximum: 338.3 Attribute_Units_of_Measure: Microns Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: D90_um Attribute_Definition: Particle diameter representing the 90% cumulative percentile value (10% of the particles in the sediment sample are finer than the D90 grain size), in microns Attribute_Definition_Source: GRADISTAT Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 169.12 Range_Domain_Maximum: 671.44 Attribute_Units_of_Measure: Microns Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: SAND_pct Attribute_Definition: Total sand fraction of the sediment sample, in percent Attribute_Definition_Source: GRADISTAT Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 71.2 Range_Domain_Maximum: 100 Attribute_Units_of_Measure: Percent Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: MUD_pct Attribute_Definition: Total mud fraction of the sediment sample, in percent Attribute_Definition_Source: GRADISTAT Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 28.8 Attribute_Units_of_Measure: Percent Attribute_Measurement_Resolution: 0.01 Overview_Description: Entity_and_Attribute_Overview: The detailed attribute descriptions for the grain-size statistics summaries are provided in the included data dictionary (SMI_RP_GrainSize_DataDictionary.docx). These metadata are not complete without these files. Entity_and_Attribute_Detail_Citation: The entity and attribute information were generated by the individual and/or agency identified as the originator of the dataset. Please review the rest of the metadata record for additional details and information. Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center Contact_Person: Cheyenne S. Everhart Contact_Position: Physical Scientist Contact_Address: Address_Type: Mailing and physical Address: 600 4th Street South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: USA Contact_Voice_Telephone: 727-502-8000 Contact_Electronic_Mail_Address: ceverhart@usgs.gov Resource_Description: Downloadable data Distribution_Liability: This publication was prepared by an agency of the United States Government. Although these data have been processed successfully on a computer system at the U.S. Geological Survey, no warranty expressed or implied is made regarding the display or utility of the data on any other system, or for general or scientific purposes, nor shall the act of distribution imply any such warranty. The U.S. Geological Survey shall not be held liable for improper or incorrect use of the data described and (or) contained herein. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: Data download Format_Version_Date: 2022 Format_Specification: WinZip, 7-Zip Format_Information_Content: This zip archive includes Microsoft Excel spreadsheets (.xlsx), comma-separated values text files (.csv), Word Document (.docx) files, Esri shapefiles (.shp), Keyhole Markup Language, Zipped (.kmz) files and accompanying metadata (.txt and .xml) for grain-size data from sediment samples collected from Seven Mile Island, NJ and Rockaway Peninsula, NY (USGS FANs 2021-318-FA and 2021-319-FA). File_Decompression_Technique: Unzip Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://coastal.er.usgs.gov/data-release/doi-P9FH8ZJW/data/SMI_RKWY_GrainSizeStats.zip Network_Resource_Name: https://coastal.er.usgs.gov/data-release/doi-P9FH8ZJW/data/SMI_RKWY_GrainSizeSites.zip Fees: None, if obtained online Technical_Prerequisites: The data tables for USGS FANs 2021-318-FA and 2021-319-FA were created in Microsoft Excel version 2102 and can be opened using Microsoft Excel 2007 or higher. The data tables are also provided as a CSV file (.csv). The .csv data file contains the tabular data in plain text and may be viewed with a standard text editor. The Word Document (.docx) can be viewed with a standard text editor. The sample site location files are provided as comma-separated values text files (.csv) and GIS data files in Esri shapefile (.shp) and Keyhole Markup Language Zipped (.kmz) format; the GIS files can be opened using the free ArcGIS Explorer or Google Earth GIS viewers. Metadata_Reference_Information: Metadata_Date: 20220720 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Cheyenne S. Everhart Contact_Position: Physical Scientist Contact_Address: Address_Type: Mailing and physical Address: 600 4th Street South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: USA Contact_Voice_Telephone: 727-502-8000 Contact_Electronic_Mail_Address: ceverhart@usgs.gov Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Access_Constraints: None Metadata_Use_Constraints: Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. Metadata_Security_Information: Metadata_Security_Classification_System: None Metadata_Security_Classification: Unclassified Metadata_Security_Handling_Description: None