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

Frequently anticipated questions:

• What does this data set describe?
  1. How might this data set be cited?
  2. What geographic area does the data set cover?
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
  5. What is the general form of this data set?
  6. How does the data set represent geographic features?
  7. How does the data set describe geographic features?
• Who produced the data set?
  1. Who are the originators of the data set?
  2. Who also contributed to the data set?
  3. To whom should users address questions about the data?
• Why was the data set created?
• How was the data set created?
  1. From what previous works were the data drawn?
  2. How were the data generated, processed, and modified?
  3. What similar or related data should the user be aware of?
• How reliable are the data; what problems remain in the data set?
  1. How well have the observations been checked?
  2. How accurate are the geographic locations?
  3. How accurate are the heights or depths?
  4. Where are the gaps in the data? What is missing?
  5. How consistent are the relationships among the data, including topology?
• How can someone get a copy of the data set?
  1. Are there legal restrictions on access or use of the data?
  2. Who distributes the data?
  3. What's the catalog number I need to order this data set?
  4. What legal disclaimers am I supposed to read?
  5. How can I download or order the data?
• Who wrote the metadata?

What does this data set describe?

1. How might this data set be cited?
   Everhart, Cheyenne S., and Wei, Emily A., 20220720, 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:.

   This is part of the following larger work.
   Everhart, Cheyenne S., Wei, Emily A., and Miselis, Jennifer L., 20220720, Grain-Size Data From Sediment Samples at Seven Mile Island, New Jersey and Rockaway Peninsula, New York: U.S. Geological Survey data release doi:10.5066/P9FH8ZJW, U.S. Geological Survey - St. Petersburg Coastal and Marine Science Center, St. Petersburg, Florida.

   Online Links:

   • https://doi.org/10.5066/P9FH8ZJW

2. What geographic area does the data set cover?

   West_Bounding_Coordinate: -74.776901
   East_Bounding_Coordinate: -73.764508
   North_Bounding_Coordinate: 40.591265
   South_Bounding_Coordinate: 39.015752
   

3. What does it look like?
4. Does the data set describe conditions during a particular time period?

   Beginning_Date: 20-May-2021

   Ending_Date: 25-Jun-2021

   Currentness_Reference:

   Ground condition

5. What is the general form of this data set?

   Geospatial_Data_Presentation_Form: tabular digital data, vector digital data
   

6. How does the data set represent geographic features?
   1. How are geographic features stored in the data set?
      This is a Point data set. It contains the following vector data types (SDTS terminology):
      • Point
   2. What coordinate system is used to represent geographic features?
      The horizontal datum used is World Geodetic System of 1984 (WGS84).
      The ellipsoid used is WGS_1984.
      The semi-major axis of the ellipsoid used is 6378137.0.
      The flattening of the ellipsoid used is 1/298.257223563.
      
7. How does the data set describe geographic features?

   SMI_RKWY_GrainSize.csv; SMI_RKWY_GrainSize.xlsx

   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. (Source: USGS)

   SMI_RKWY_RawCoulterOutput.csv

   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). (Source: USGS)

   Sample Identity:

   Sample identification name (Source: USGS) Character string containing the sample identification information and set number.

   Analyst:

   Last name of the person analyzing the sample on the laser diffraction Coulter LS13 320 particle-size analyzer. (Source: USGS)

   Value	Definition
   Everhart	Cheyenne Everhart of the USGS SPCMSC conducted the analysis of the sample.

   Date:

   Date and time the sample was analyzed in MM/DD/YYYY HH:MM:SS AM/PM format. (Source: USGS)

   Range of values
   Minimum:	8/9/2021 3:38:00 PM
   Maximum:	9/1/2021 3:12:00 PM

   Aperture (microns)

   Coulter software bin aperture, in microns (Source: Beckman Coulter LS13 320 Software)

   Range of values
   Minimum:	0.375
   Maximum:	1822

   Class Weight Retained (%)

   The percent of that class weight retained of the total sample for the given bin aperature (Source: Beckman Coulter LS13 320 Software)

   Range of values
   Minimum:	0
   Maximum:	15.3

   SMI_GrainSizeSites.csv; SMI_GrainSizeSites.shp; SMI_GrainSizeSites.kmz

   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. (Source: USGS)

   FID

   Internal feature number (Source: Esri) Sequential unique whole numbers that are automatically generated

   Shape

   Feature geometry (Source: Esri) Geometry type defining the features

   SAMPLE_ID

   Sample identification name assigned to sediment grabs collected from Seven Mile Island, NJ. (Source: USGS) 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.

   WGS84_LAT

   Latitude of sample location, in decimal degrees (WGS84) (Source: USGS)

   Range of values
   Minimum:	39.015752
   Maximum:	39.098590
   Units:	Decimal Degrees
   Resolution:	0.000001

   WGS84_LON

   Longitude of sample location, in decimal degrees (WGS84) (Source: USGS)

   Range of values
   Minimum:	-74.776901
   Maximum:	-73.769164
   Units:	Decimal Degrees
   Resolution:	0.000001

   LOCATION

   Coastal region describing the sample location (Source: USGS)

   Value	Definition
   Seven Mile Island	The sediment sample grab was collected at Seven Mile Island, NJ.

   DATE

   Date of field collection (Source: USGS)

   Range of values
   Minimum:	5/20/2021
   Maximum:	5/20/2021

   TEXTURE

   Sediment texture, after Folk (1954) (Source: GRADISTAT) Character string: sand, muddy sand, or sandy mud.

   MEAN_um

   Sample mean grain size, in microns (Source: GRADISTAT)

   Range of values
   Minimum:	8.10
   Maximum:	550.84
   Units:	Microns
   Resolution:	0.01

   SORTING_um

   Sample sorting - the standard deviation of the grain size distribution, in microns (Source: GRADISTAT)

   Range of values
   Minimum:	1.339
   Maximum:	5.104
   Units:	Microns
   Resolution:	0.001

   SKEWNESS_um

   Sample skewness - deviation of the grain size distribution from symmetrical, in microns (Source: GRADISTAT)

   Range of values
   Minimum:	-0.744
   Maximum:	0.261
   Units:	Microns
   Resolution:	0.001

   KURTOSISum

   Sample kurtosis - degree of curvature near the mode of the grain size distribution, in microns (Source: GRADISTAT)

   Range of values
   Minimum:	0.817
   Maximum:	2.767
   Units:	Microns
   Resolution:	0.001

   MEAN_phi

   Sample mean grain size, in phi units (Source: GRADISTAT)

   Range of values
   Minimum:	0.860
   Maximum:	6.949
   Units:	Phi
   Resolution:	0.001

   MEAN

   Physical description of sample mean grain size (descriptive) (Source: GRADISTAT) Character string: coarse sand, coarse silt, fine sand, medium sand, medium silt, or very fine sand.

   SORTING

   Physical description of sample sorting (descriptive) (Source: GRADISTAT) Character string: moderately sorted, moderately well sorted, poorly sorted, very poorly sorted, or well sorted.

   SKEWNESS

   Physical description of sample skewness (descriptive) (Source: GRADISTAT) Character string: coarse skewed, fine skewed, symmetrical, or very fine skewed.

   KURTOSIS

   Physical description of sample kurtosis (descriptive) (Source: GRADISTAT) Character string: leptokurtic, mesokurtic, platykurtic, or very leptokurtic.

   D10_um

   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 (Source: GRADISTAT)

   Range of values
   Minimum:	1.01
   Maximum:	268.39
   Units:	Microns
   Resolution:	0.01

   D50_um

   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 (Source: GRADISTAT)

   Range of values
   Minimum:	8.38
   Maximum:	579.19
   Units:	Microns
   Resolution:	0.01

   D90_um

   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 (Source: GRADISTAT)

   Range of values
   Minimum:	78.25
   Maximum:	873.12
   Units:	Microns
   Resolution:	0.01

   SAND_pct

   Total sand fraction of the sediment sample, in percent (Source: GRADISTAT)

   Range of values
   Minimum:	12.6
   Maximum:	100
   Units:	Percent
   Resolution:	0.01

   MUD_pct

   Total mud fraction of the sediment sample, in percent (Source: GRADISTAT)

   Range of values
   Minimum:	0.8
   Maximum:	87.4
   Units:	Percent
   Resolution:	0.01

   RKWY_GrainSizeSites.csv; RKWY_GrainSizeSites.shp; RKWY_GrainSizeSites.kmz

   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. (Source: USGS)

   FID

   Internal feature number (Source: Esri) Sequential unique whole numbers that are automatically generated

   Shape

   Feature geometry (Source: Esri) Geometry type defining the features

   SAMPLE_ID

   Sample identification name assigned to sediment grabs collected on Rockaway Peninsula, NY. (Source: USGS) 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

   WGS84_LAT

   Latitude of sample location, in decimal degrees (WGS84) (Source: USGS)

   Range of values
   Minimum:	40.533981
   Maximum:	40.591265
   Units:	Decimal Degrees
   Resolution:	0.000001

   WGS84_LON

   Longitude of sample location, in decimal degrees (WGS84) (Source: USGS)

   Range of values
   Minimum:	-73.764508
   Maximum:	-73.928698
   Units:	Decimal Degrees
   Resolution:	0.000001

   LOCATION

   Coastal region describing the sample location (Source: USGS)

   Value	Definition
   Rockaway Peninsula	The sediment sample grab was collected from Rockaway Peninsula, NY.

   DATE

   Date of field collection (Source: USGS)

   Range of values
   Minimum:	6/17/2021
   Maximum:	6/25/2021

   TEXTURE

   Sediment texture, after Folk (1954) (Source: GRADISTAT) Character string: muddy sand, or sand.

   MEAN_um

   Sample mean grain size, in microns (Source: GRADISTAT)

   Range of values
   Minimum:	64.62
   Maximum:	307.78
   Units:	Microns
   Resolution:	0.01

   SORTING_um

   Sample sorting - the standard deviation of the grain size distribution, in microns (Source: GRADISTAT)

   Range of values
   Minimum:	1.265
   Maximum:	3.415
   Units:	Microns
   Resolution:	0.001

   SKEWNESS_um

   Sample skewness - deviation of the grain size distribution from symmetrical, in microns (Source: GRADISTAT)

   Range of values
   Minimum:	-0.668
   Maximum:	0.241
   Units:	Microns
   Resolution:	0.001

   KURTOSISum

   Sample kurtosis - degree of curvature near the mode of the grain size distribution, in microns (Source: GRADISTAT)

   Range of values
   Minimum:	0.943
   Maximum:	2.233
   Units:	Microns
   Resolution:	0.001

   MEAN_phi

   Sample mean grain size, in phi units (Source: GRADISTAT)

   Range of values
   Minimum:	1.70
   Maximum:	3.962
   Units:	Phi
   Resolution:	0.001

   MEAN

   Physical description of sample mean grain size (descriptive) (Source: GRADISTAT) Character string: medium sand, fine sand, or very fine sand.

   SORTING

   Physical description of sample sorting (descriptive) (Source: GRADISTAT) Character string: moderately sorted, moderately well sorted, poorly sorted, very well sorted, or well sorted.

   SKEWNESS

   Physical description of sample skewness (descriptive) (Source: GRADISTAT) Character string: coarse skewed, fine skewed, symmetrical, or very fine skewed.

   KURTOSIS

   Physical description of sample kurtosis (descriptive) (Source: GRADISTAT) Character string: leptokurtic, mesokurtic, or very leptokurtic.

   D10_um

   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 (Source: GRADISTAT)

   Range of values
   Minimum:	6.51
   Maximum:	184.21
   Units:	Microns
   Resolution:	0.01

   D50_um

   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 (Source: GRADISTAT)

   Range of values
   Minimum:	101.19
   Maximum:	338.3
   Units:	Microns
   Resolution:	0.01

   D90_um

   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 (Source: GRADISTAT)

   Range of values
   Minimum:	169.12
   Maximum:	671.44
   Units:	Microns
   Resolution:	0.01

   SAND_pct

   Total sand fraction of the sediment sample, in percent (Source: GRADISTAT)

   Range of values
   Minimum:	71.2
   Maximum:	100
   Units:	Percent
   Resolution:	0.01

   MUD_pct

   Total mud fraction of the sediment sample, in percent (Source: GRADISTAT)

   Range of values
   Minimum:	0
   Maximum:	28.8
   Units:	Percent
   Resolution:	0.01

   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.

Who produced the data set?

1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
   • Cheyenne S. Everhart
   • Emily A. Wei
2. Who also contributed to the data set?
   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.
3. To whom should users address questions about the data?
   U.S. Geological Survey

   Attn: Emily A. Wei

   Research Geologist

   600 4th Street South

   St. Petersburg, FL
   

   USA

   727-502-8000 (voice)

   ewei@usgs.gov

Why was the data set created?

How was the data set created?

1. From what previous works were the data drawn?
2. How were the data generated, processed, and modified?

   Date: 25-Jun-2021 (process 1 of 4)

   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. Person who carried out this activity:
   

   U.S. Geological Survey

   Attn: Emily A. Wei

   Research Geologist

   600 4th Street South

   St. Petersburg, FL
   

   USA

   (727) 502-8000 (voice)

   ewei@usgs.gov

   Date: 01-Sep-2021 (process 2 of 4)

   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). Person who carried out this activity:
   

   U.S. Geological Survey

   Attn: Cheyenne S. Everhart

   Physical Scientist

   600 4th Street South

   St. Petersburg, FL
   

   USA

   (727) 502-8000 (voice)

   ceverhart@usgs.gov

   Date: Sep-2021 (process 3 of 4)

   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. Person who carried out this activity:
   

   U.S. Geological Survey

   Attn: Cheyenne S. Everhart

   Physical Scientist

   600 4th Street South

   St. Petersburg, FL
   

   USA

   (727) 502-8000 (voice)

   ceverhart@usgs.gov

   Data sources produced in this process:

   • SMI_RKWY_RawCoulterOutput.csv
   • SMI_RKWY_GrainSize.csv
   • SMI_RKWY_GrainSize.xlsx

   Date: 05-Jul-2022 (process 4 of 4)

   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. Person who carried out this activity:
   

   U.S. Geological Survey

   Attn: Cheyenne S. Everhart

   Physical Scientist

   600 4th Street South

   St. Petersburg, FL
   

   USA

   (727) 502-8000 (voice)

   ceverhart@usgs.gov

   Data sources produced in this process:

   • SMI_GrainSizeSites.csv; RKWY_GrainSizeSites.csv
   • SMI_GrainSizeSites.shp; RKWY_GrainsSizeSites.shp
   • SMI_GrainSizeSites.kmz; RKWY_GrainsSizeSites.kmz

3. What similar or related data should the user be aware of?
   Wei, E.A., and Miselis, J.L., 20220720, Geologic framework, anthropogenic impacts, and hydrodynamics contribute to variable sediment availability and shoreface morphology at the Rockaway Peninsula, NY: Journal of Marine Science and Engineering Volume 10, Issue 7.

   Online Links:

   • https://doi.org/10.3390/jmse10070989

   Other_Citation_Details: Pages 989
   

   Coulter, Beckman, 201110, LS 13 320 laser diffraction particle size analyzer instructions for use.

   Online Links:

   • https://www.beckmancoulter.com/wsrportal/techdocs?docname=B05577AB.pdf

   Blott, S.J. and Pye, K., 20010928, GRADISTAT: A grain size distribution and statistics package for the analysis of unconsolidated sediments: Earth Surface Processes and Landforms Volume 26, Issue 11.

   Online Links:

   • http://www.kpal.co.uk/gradistat.html
   • https://doi.org/10.1002/esp.261

   Other_Citation_Details: Pages 1237-1248
   

   Folk, R.L, and Ward, W.C., 19570301, Brazos River bar: A study in the significance of grain size parameters: Journal of Sedimentary Petrology Volume 27, No. 1.

   Online Links:

   • https://doi.org/10.1306/74D70646-2B21-11D7-8648000102C1865D

   Other_Citation_Details: Pages 3-26
   

   Krumbein, W.C., 19340801, Size frequency distributions of sediments: Journal of Sedimentary Petrology Volume 4, No. 2.

   Online Links:

   • https://doi.org/10.1306/D4268EB9-2B26-11D7-8648000102C1865D

   Other_Citation_Details: Pages 65-77
   

   Wentworth, C.K., 1922, A scale of grade and class terms for clastic sediments: Journal of Geology Volume 30, No. 5.

   Online Links:

   • https://www.jstor.org/stable/30063207

   Other_Citation_Details: Pages 377-392
   

   Folk, R.L., 195407, The distinction between grain size and mineral composition in sedimentary-rock nomenclature: Journal of Geology Volume 62, No. 4.

   Online Links:

   • https://doi.org/10.1086/626171

   Other_Citation_Details: Pages 344-359
   

How reliable are the data; what problems remain in the data set?

1. How well have the observations been checked?
   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).
2. How accurate are the geographic locations?
   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.
3. How accurate are the heights or depths?
   
4. Where are the gaps in the data? What is missing?
   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.
5. How consistent are the relationships among the observations, including topology?
   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.

How can someone get a copy of the data set?

1. Who distributes the data set? (Distributor 1 of 1)
   
   U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center

   Attn: Cheyenne S. Everhart

   Physical Scientist

   600 4th Street South

   St. Petersburg, FL
   

   USA

   727-502-8000 (voice)

   ceverhart@usgs.gov
2. What's the catalog number I need to order this data set? Downloadable data
3. What legal disclaimers am I supposed to read?
   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.
4. How can I download or order the data?
   • Availability in digital form:

     Data format:

     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). in format Data download WinZip, 7-Zip

     Network links:

     https://coastal.er.usgs.gov/data-release/doi-P9FH8ZJW/data/SMI_RKWY_GrainSizeStats.zip https://coastal.er.usgs.gov/data-release/doi-P9FH8ZJW/data/SMI_RKWY_GrainSizeSites.zip

   • Cost to order the data: None, if obtained online

5. What hardware or software do I need in order to use the data set?
   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.

Who wrote the metadata?

Dates:

Last modified: 20-Jul-2022

Metadata author:

U.S. Geological Survey

Attn: Cheyenne S. Everhart

Physical Scientist

600 4th Street South

St. Petersburg, FL

USA

727-502-8000 (voice)

ceverhart@usgs.gov

Metadata standard:

Content Standard for Digital Geospatial Metadata (FGDC-STD-001-1998)