Identification_Information:
  Citation:
    Citation_Information:
      Originator: Joseph F. Terrano
      Originator: Kathryn E.L. Smith
      Originator: Jonathan P. Griffiths
      Originator: Joseph M. Vargas
      Originator: Samuel M. Randall
      Originator: Jonathan Pitchford
      Originator: Michael Archer
      Originator: Alisha M. Ellis
      Originator: Cheyenne S. Everhart
      Publication_Date: 20250527
      Title: Shore proximal sediment deposition in coastal marsh at the Grand Bay National Estuarine Research Reserve, Mississippi: net sedimentation tile and surface grab sediment physical properties datasets from October 2020 to January 2023
      Edition: 1.0
      Geospatial_Data_Presentation_Form: tabular digital data
      Larger_Work_Citation:
        Citation_Information:
          Originator: Joseph F. Terrano
          Originator: Alisha M. Ellis
          Originator: Kathryn E.L. Smith
          Originator: Jonathan Pitchford
          Originator: Michael Archer
          Originator: Joseph M. Vargas
          Originator: Jonathan P. Griffiths
          Originator: Samuel M. Randall
          Originator: Matthew Virden
          Originator: Cheyenne S. Everhart
          Originator: Eric Sparks
          Publication_Date: 20250527
          Title: Shore Proximal Marsh Sediment Deposition and Ancillary Data From Grand Bay National Estuarine Research Reserve, Mississippi, From October 2020 to January 2023
          Edition: 1.0
          Geospatial_Data_Presentation_Form: Multimedia presentation
          Series_Information:
            Series_Name: U.S. Geological Survey data release
            Issue_Identification: doi:10.5066/P13VT3ET
          Publication_Information:
            Publication_Place: St. Petersburg, FL
            Publisher: U.S. Geological Survey
          Online_Linkage: https://doi.org/10.5066/P13VT3ET
  Description:
    Abstract: To better understand sediment deposition in marsh environments, scientists from the U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center (USGS-SPCMSC) selected five marsh study sites (Sites 5, 6, 7, 8, and 9) and four nearshore estuarine study sites (Sites 8S, 8D, 9S, 9D) along the Point Aux Chenes Bay shoreline of the Grand Bay National Estuarine Research Reserve (GNDNERR), Mississippi. This study builds on Smith and others (2020b) and includes datasets collected after the installation of a living shoreline (a subtidal sill [artificial reef]) that was completed in May 2021. Each marsh site consisted of five plots located along a transect perpendicular to the marsh-estuary shoreline at 5-meter (m) increments (5, 10, 15, 20, and 25 m from the shoreline). Each plot contained three to six net sedimentation tiles (NST) that were secured flush to the marsh surface using polyvinyl chloride (PVC) pipe. NST are an inexpensive and simple tool to assess short- and long-term deposition that can be deployed in highly dynamic environments without the compaction associated with traditional coring methods. The NST were deployed for three-month sampling periods, measuring sediment deposition from August 2021 to January 2023. Sediment deposited on the NST were processed to determine physical characteristics, such as deposition thickness, volume, wet weight/dry weight, grain size, and organic content (via loss-on-ignition [LOI]). For select sampling periods, ancillary data (water level, elevation, and vegetation) are also provided in this data release. The estuarine sites consisted of Site 8S (shallow; landward of the subtidal sill), 8D (deep; seaward side of the subtidal sill), as well as 9S and 9D (both sites established adjacent to 8S/8D and the subtidal sill). During select trips water parameters (e.g., waves, water level, and turbidity) were collected at each estuarine site to collect turbidity and wave data. Data presented in this data release were collected under three USGS Field Activities Numbers (FAN; one FAN per year) during thirteen sampling trips (alternate FAN; each sampling trip was assigned a unique alt FAN under the main FAN): 2021-320-FA (21CCT01, 21CCT03, 21CCT04, 21CCT05), 2022-302-FA (22CCT01, 22CCT02, 22CCT03, 22CCT04, 22CCT05, 22CCT06, 22CCT07, 22CCT08) and 2023-301-FA (23CCT01), however, every trip does not contain all data types. This data release also contains data for 2020-323-FA (20CCT02) that was collected as a special collection trip for Hurricane Delta. This data was collected before the subtidal sill was installed and is being published with this data release since pre-subtidal sill data was already published. Additional survey and data details are available from the U.S. Geological Survey Coastal and Marine Geoscience Data System (CMGDS) at, https://cmgds.marine.usgs.gov/. Users can look up USGS FANs in the CMGDS by replacing the FAN in the following url: https://cmgds.marine.usgs.gov/services/activity.php?fan=2022-302-FA. Data from a related NST study in the GNDNERR (Middle Bay and North Rigolets) can be found in Smith and others (2020a). Data collected from before the living shoreline (subtidal sill) installation can be found in Smith and others (2020b). For additional information on data processing and analysis, refer to the accompanying journal publication Smith and others (2025). Please read the full metadata for details on data collection, dataset variables, and data quality. 
    Purpose: Net sedimentation tiles (also called sediment plates, tiles, or traps) are an inexpensive tool to assess sediment deposition in coastal zones. Each of the five study sites consisted of three to six NST plots at 5, 10, 15, 20, and 25 m from the shoreline. Multiple NSTs per distance were used to assess the spatial variation within the marsh and across the shoreline to the marsh interior. A special deployment of NST occurred from October 6-15, 2020, to collect sediment deposition data during the passing of Hurricane Delta. This sediment data is providing post subtidal sill install sedimentation data along the Point Aux Chenes coastline Grand Bay. This data builds on data collected from before the living shoreline (subtidal sill) installation and can be found in Smith and others (2020b).  
    Supplemental_Information: Data was collected through quarterly field visits. Each field visit was assigned a field activity number (FAN) and alternate FAN (alt-FAN) by the U.S Geological Survey (USGS). This publication contains data for field activities from: 1) 2020-232-FA (20CCT02, October 6-15, 2020, pre- and post-Hurricane Delta), 2) 2021-320-FA (August 2021; 21CCT01, August 2021-September 2021; 21CCT03, September 2021-December 2021; 21CCT05), 3) 2022-302-FA (December 2021-February 2022; 22CCT01, February 2022-May2022; 22CCT03, May 2022-August 2022; 22CCT05, August 2022-November 2022; 22CCT07), 4) 2023-301-FA (November 2022-January 2023; 23CCT01). NSTs were deployed on the start date and collected on the end date. The unedited output grain size files with statistics for each sample run along with averaged statistics for each sample generated by the USGS Average and Check Standard Deviation macro are available upon request. The averaged results for the subset of statistical parameters that apply to these data are summarized and published in this data release.
  Time_Period_of_Content:
    Time_Period_Information:
      Range_of_Dates/Times:
        Beginning_Date: 20201008
        Ending_Date: 20230131
    Currentness_Reference: ground condition
  Status:
    Progress: Complete
    Maintenance_and_Update_Frequency: None planned
  Spatial_Domain:
    Bounding_Coordinates:
      West_Bounding_Coordinate: -88.4474
      East_Bounding_Coordinate: -88.4435
      North_Bounding_Coordinate: 30.3370
      South_Bounding_Coordinate: 30.3337
  Keywords:
    Theme:
      Theme_Keyword_Thesaurus: USGS Metadata Identifier
      Theme_Keyword: USGS:35f2163e-25ee-4f57-b6b0-7bc109b02073
    Theme:
      Theme_Keyword_Thesaurus: ISO 19115 Topic Category
      Theme_Keyword: environment
      Theme_Keyword: oceans
      Theme_Keyword: geoscientificinformation
    Theme:
      Theme_Keyword_Thesaurus: USGS Thesaurus
      Theme_Keyword: unconsolidated deposits
      Theme_Keyword: geology
      Theme_Keyword: geomorphology
      Theme_Keyword: coastal processes
    Theme:
      Theme_Keyword_Thesaurus: None
      Theme_Keyword: sediment
      Theme_Keyword: net sedimentation tile
      Theme_Keyword: NST
      Theme_Keyword: sediment plate
      Theme_Keyword: physical parameters
      Theme_Keyword: U.S. Geological Survey
      Theme_Keyword: USGS
      Theme_Keyword: U.S. Geological Survey - St. Petersburg Coastal and Marine Science Center
      Theme_Keyword: SPCMSC
      Theme_Keyword: deposition
      Theme_Keyword: marsh
      Theme_Keyword: grain size
      Theme_Keyword: particle size analysis
      Theme_Keyword: dry bulk density
      Theme_Keyword: loss on ignition
    Place:
      Place_Keyword_Thesaurus: None
      Place_Keyword: Grand Bay National Estuarine Research Reserve
      Place_Keyword: NERR
    Place:
      Place_Keyword_Thesaurus: Geographic Names Information System
      Place_Keyword: State of Mississippi
      Place_Keyword: Point Aux Chenes
    Stratum:
      Stratum_Keyword_Thesaurus: None
      Stratum_Keyword: sediment
      Stratum_Keyword: surface
  Access_Constraints: No access constraints. Please see 'Distribution Information' for details. 
  Use_Constraints: These data are marked with a Creative Common CC0 1.0 Universal License. These data are in the public domain and do not have any use constraints. Users are advised to read the dataset's metadata thoroughly to understand appropriate use and data limitations.
  Point_of_Contact:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: U.S. Geological Survey - St. Petersburg Coastal and Marine Science Center
        Contact_Person: Joseph F. Terrano
      Contact_Position: Physical Scientist
      Contact_Address:
        Address_Type: Mailing
        Address: 600 4th Street South
        City: St. Petersburg
        State_or_Province: FL
        Postal_Code: 33701
      Contact_Voice_Telephone: 727-502-8047
      Contact_Facsimile_Telephone: 727-502-8182
      Contact_Electronic_Mail_Address: jterrano@usgs.gov
  Data_Set_Credit: The authors would like to acknowledge the GNDNERR staff for their contributions in collecting and reviewing this data.
  Native_Data_Set_Environment: Environment as of Metadata Creation: Microsoft Windows 10 Enterprise Version 22H2 (Build 19045.3324, Windows Feature Experience Pack 1000.19041.1000.0); Esri ArcGIS 10.8.1, Service Pack N/A (Build N/A); Microsoft Excel for Microsoft 365 MSO (Version 2302, Build 16.0.16130.20806, 32-bit); GRADISTAT version 9.1.
  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://doi.org/10.1086/622910
  Cross_Reference:
    Citation_Information:
      Originator: Krumbein, W.C.
      Publication_Date: 19340801
      Title: Size frequency distributions of sediments
      Series_Information:
        Series_Name: SEPM 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: 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: SEPM 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: Friedman, G.M., and Sanders, J.E.
      Publication_Date: 1978
      Title: Principles of sedimentology
      Other_Citation_Details: 792 Pages
  Cross_Reference:
    Citation_Information:
      Originator: Blott, S.J., and Pye, K.
      Publication_Date: 2001
      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, No. 11
      Other_Citation_Details: Pages 1237-1248
      Online_Linkage: https://doi.org/10.1002/esp.261
      Online_Linkage: http://www.kpal.co.uk/gradistat.html
  Cross_Reference:
    Citation_Information:
      Originator: Joseph F. Terrano
      Publication_Date: 2018
      Title: An evaluation of marsh shoreline erosion and sediment deposition in the Grand Bay National Estuarine Research Reserve, Mississippi, USA
      Publication_Information:
        Publication_Place: Tampa, Florida
        Publisher: University of South Florida Scholar Commons
      Online_Linkage: https://scholarcommons.usf.edu/etd/7371/
  Cross_Reference:
    Citation_Information:
      Originator: Kathryn E.L. Smith
      Originator: Joseph F. Terrano
      Originator: Nicole S. Khan
      Originator: Chelsea A. Stalk
      Publication_Date: 20200226
      Title: Shore proximal sediment deposition, elevation, turbidity, and water level data for four sites in the coastal marsh at Grand Bay National Estuarine Research Reserve, Mississippi, from October 2016 through October 2017
      Publication_Information:
        Publication_Place: St. Petersburg, Florida
        Publisher: United States Geological Survey
      Other_Citation_Details: Smith and others (2020a)
      Online_Linkage: https://doi.org/10.5066/P9BFR2US
  Cross_Reference:
    Citation_Information:
      Originator: Kathryn E.L. Smith
      Originator: Joseph F. Terrano
      Originator: Jonathan Pitchford
      Originator: Michael Brochard
      Originator: Joseph M. Vargas
      Originator: Isabelle D. Atchia
      Originator: Cheyenne S. Everhart
      Originator: Christopher G. Smith
      Publication_Date: 20200713
      Title: Shore proximal marsh sediment deposition and ancillary data from Grand Bay National Estuarine Research Reserve, Mississippi, from July 2018 to January 2020
      Edition: 2.0 (June 2023)
      Publication_Information:
        Publication_Place: St. Petersburg, Florida
        Publisher: United States Geological Survey-St. Petersburg Coastal and Marine Science Center
      Other_Citation_Details: Smith and others (2020b)
      Online_Linkage: https://doi.org/10.5066/P9ONI8PS
  Cross_Reference:
    Citation_Information:
      Originator: Kathryn E.L. Smith
      Originator: Jonathan L. Pitchford
      Originator: Eric L. Sparks
      Originator: Michael J. Archer
      Originator: Matthew F. Virden
      Originator: Joseph F. Terrano
      Originator: Christopher G. Smith
      Publication_Date: 20250612
      Title: Evaluating the influence of constructed subtidal reefs on marsh shoreline erosion, sediment deposition, and wave energy 
      Series_Information:
        Series_Name: Estuaries and Coasts 
        Issue_Identification: Volume 48, Article 128
      Publication_Information:
        Publication_Place: Online
        Publisher: Springer Nature
      Other_Citation_Details: Smith and others (2025)
      Online_Linkage: https://doi.org/10.1007/s12237-025-01564-7
Data_Quality_Information:
  Attribute_Accuracy:
    Attribute_Accuracy_Report: The physical parameters reported in the table were analyzed at the USGS-SPCMSC sedimentology lab. These sediment datasets were checked by multiple reviewers independent of data processors to ensure data accuracy. The grain size data presented here represent the sample averages for a subset of the statistical parameters calculated by GRADISTAT. The number of runs included in the averaged results are also reported, and the standard deviation of the averaged results are reported for most parameters. Positional data can be obtained from the "GB_Elevation_Data_2020_2023.zip" folder and metadata within this data release. 
  Logical_Consistency_Report: The data included in the provided data files contain data related to sediment physical properties (bulk density, LOI, grain size). The complete grain size dataset including all GRADISTAT parameters, results of individual sample runs or re-runs, and standard deviations for all sample averages are available upon request. Re-runs were conducted when additional sediment was available or there was an issue with the quality control (QC) check of the original sample. All samples analyzed, including those that did not pass QC checks, are published in this data release. If the sample had QC issues, it was noted in the data file. For more information, about specific samples and results, contact the metadata contact listed in this metadata record.  
  Completeness_Report: This is a complete, processed physical parameters data file and grain size file for data collected within the Grand Bay National Estuarine Research Reserve, Mississippi for net sediment tiles or surface sediment samples from 2020 to 2023. Data quality notes are presented in the data file and are described in this metadata. If a cell is blank, it represents no data was collected for that analysis.
  Lineage:
    Process_Step:
      Process_Description: Between October 8-16, 2020, a special NST deployment occurred to collect data from the passing of Hurricane Delta. Each site (5-8) consisted of two plots located along a transect perpendicular to the marsh-estuary shoreline at 10 and 25 meters inland from the shoreline. At each distance, three unglazed NST were placed in randomly selected locations within a 1-m quadrat, referred to as the "NST plot". The unglazed NST was a 4.25-inch (in) square tile. Each NST was gently pushed down into the marsh surface until the NST was flush with the marsh surface. For more information on NST construction and deployment, refer to Terrano (2018). Immediately following the passing of Hurricane Delta, the NST were collected and brought back to the USGS SPCMSC for sedimentary analysis.  
      Process_Date: 2020
      Process_Contact:
        Contact_Information:
          Contact_Organization_Primary:
            Contact_Organization: U.S. Geological Survey - St. Petersburg Coastal and Marine Science Center
            Contact_Person: Joseph F. Terrano
          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: U.S.
          Contact_Voice_Telephone: (727) 502-8047
          Contact_Electronic_Mail_Address: jterrano@usgs.gov
    Process_Step:
      Process_Description: The post subtidal sill study consisted of Sites 5-9. Each site had of five NST plots located along a transect perpendicular to the marsh-estuary shoreline at 5-meter (m) increments (5, 10, 15, 20, and 25 m from the shoreline). To begin this study, three unglazed NST and three glazed NST were used in each plot to assess the NST design (glazed versus unglazed). Both designs used a 4.25-inch (in) square tile. At each distance, six NSTs were placed in randomly selected locations within the 1-m quadrat (NST plot). Each NST was gently pushed down into the marsh surface until the NST was flush with the marsh surface. For more information on NST construction and deployment, refer to Terrano (2018). The three glazed and three unglazed NST were deployed in each plot in August 2021 (30 per site or 120 total). In September 2021, all NST were collected and new NST were redeployed due to the passing of Hurricane Ida. After all the NST were collected, three new glazed and three new unglazed NST were then placed in the same locations. Following the deployment in September 2021, all 120 NST were collected and redeployed approximately every three months until August 2022. From August 2022 to January 2023, only three unglazed NST were deployed in each plot (60 total NST deployed) and were collected and redeployed every three months. During select trips, surface sediment samples were collected from the top one centimeter of the marsh or estuary surface. For marsh samples, a 4x4 inch sampling area was selected directly adjacent to each NST plot. For estuary samples, one sample was collected at each site using a petite Ponar grab sampler. Since the Ponar collected sediment from roughly the top ten centimeters, a 4x4 inch sampling area was selected. From within this box the top one centimeter of sediment was collected for analysis. All NST and surface samples were put into individual containers to prevent cross contamination. All sediment samples were brought back to the USGS-SPCMSC sedimentology laboratory and stored in a refrigerator until they were ready to be processed.     
      Process_Date: 2023
      Process_Contact:
        Contact_Information:
          Contact_Organization_Primary:
            Contact_Organization: U.S. Geological Survey - St. Petersburg Coastal and Marine Science Center
            Contact_Person: Joseph F. Terrano
          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: U.S.
          Contact_Voice_Telephone: (727) 502-8047
          Contact_Electronic_Mail_Address: jterrano@usgs.gov
    Process_Step:
      Process_Description: NSTs were processed in the USGS-SPCMSC sedimentology laboratory shortly after each sample collection trip. Wet volume was determined by packing the sediment into a syringe. The wet sediment was weighed and dried for 48 hours at 60 degrees Celsius (°C) to obtain a dry weight. Additional information about sediment processing can be found in Terrano (2018).
      Process_Date: 2023
      Process_Contact:
        Contact_Information:
          Contact_Organization_Primary:
            Contact_Organization: U.S. Geological Survey - St. Petersburg Coastal and Marine Science Center
            Contact_Person: Joseph F. Terrano
          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: U.S.
          Contact_Voice_Telephone: (727) 502-8047
          Contact_Electronic_Mail_Address: jterrano@usgs.gov
    Process_Step:
      Process_Description: Organic matter content was determined with a mass loss technique, referred to as loss on ignition (LOI). The dry sediment from the previous process was homogenized with a porcelain mortar and pestle. Approximately 0.5-5 grams (g) of the dry sediment was placed into a pre-weighed porcelain crucible. The mass of the dried sediment was recorded. The sample was then placed inside a laboratory muffle furnace with stabilizing temperature control. The furnace was heated to 110 °C for a minimum of 6 hours to remove hygroscopic water absorbed onto the sediment particles. The furnace temperature was then lowered to 60 °C, at which point the sediments could be reweighed. The dried sediment was returned to the muffle furnace. The furnace was heated to 550 °C over 30 minutes and kept at 550 °C for 6 hours. The furnace temperature was then lowered to 60 °C and held at this temperature until the sediments could be reweighed. The latter step prevents the absorption of moisture, which can affect the measurement. The mass lost during the 6-hour baking period relative to the 110 °C-dried mass is used as a metric of organic matter content. Data are reported as a ratio of mass (g) of organic matter to mass (g) of dry sediment (post-110 °C drying). To be consistent with previous data releases, replicate analyses of loss on ignition was conducted for quality assurance and those values were averaged (Smith and others, 2020).
      Process_Date: 2023
      Source_Produced_Citation_Abbreviation: Grand_Bay_NST_Sediment_Physical_Properties_20CCT02_23CCT01.csv
      Source_Produced_Citation_Abbreviation: Grand_Bay_Surface_Sediment_Physical_Properties_22CCT01_23CCT01.csv
      Process_Contact:
        Contact_Information:
          Contact_Organization_Primary:
            Contact_Organization: U.S. Geological Survey - St. Petersburg Coastal and Marine Science Center
            Contact_Person: Joseph F. Terrano
          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: U.S.
          Contact_Voice_Telephone: (727) 502-8047
          Contact_Electronic_Mail_Address: jterrano@usgs.gov
    Process_Step:
      Process_Description: Sediment samples were collected from the top of NST or collected from the top 1 cm of sediment (surface samples). Prior to particle size analysis, sediment samples which appeared (by visual inspection) to consist of greater than 5 percent organic material had the organic matter chemically removed from the samples using approximately 8 milliliters (mL) of 30 percent hydrogen peroxide (H2O2) in 50 mL beakers overnight. The H2O2 was then evaporated through slow heating on a hot plate, and the sediment was washed and centrifuged twice with deionized water. Samples which appeared to consist of less than 5 percent organic material were dried at 60 degrees Celsius (°C). To prevent shell fragments from damaging the Beckman Coulter LS 13 320 particle size analyzer, particles greater than 1 millimeter (mm) in diameter were separated from all samples prior to analysis with a number 18 (1000 micrometer [µm]) U.S. standard sieve, which meets the American Society for Testing and Materials (ASTM) E11 standard specifications for determining particle size with woven-wire test sieves. The samples were washed through the sieve with deionized water and a few milliliters of sodium hexametaphosphate solution to act as a deflocculant. The sediment slurry was sonicated with a wand sonicator for 30–60 seconds before being introduced into the Coulter LS 13 320 to break down aggregated particles. Two subsamples from each sample were processed through the Coulter LS 13 320 with a minimum of four runs apiece. The Coulter LS 13 320 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. The particles scatter light into characteristic refraction patterns that are measured by an array of photodetectors as intensity per unit area and recorded as relative volume for 92 size-classification channels, or bins. The size-classification boundaries for each bin were based on the ATSM E11 standard specification for wire cloth and sieves for testing purposes. The raw grain-size data were then run through the free software program, GRADISTAT version 9.1, (Blott and Pye, 2001), which calculates the mean, median, sorting, skewness, and kurtosis of each sample geometrically in metric units and logarithmically in phi units (Krumbein, 1934) using the Folk and Ward (1957) method. GRADISTAT also calculates the fraction of sediment from each sample by size category (for example, clay, coarse silt, fine sand) based on Friedman and Saunders (1978), a modified Wentworth (1922) size scale. A macro function in Microsoft Excel, developed by the USGS SPCMSC, was applied to the data to calculate the average and standard deviation for each sample set (7-8 runs per sample), and highlight runs that varied from the set average by more than ± 1.5 standard deviations. The highlighted runs were removed from the results, and the sample average was recalculated using the remaining runs. The raw, unaltered, individual run statistics measured by the LS 13 320 and class size distribution as produced by GRADISTAT (Blott and Pye, 2001), as well as the averaged run statistics and class size distributions, are available upon request. The averaged results for all samples, including the number of runs included and the standard deviation of the averaged results were summarized in an Excel workbook. The excel notebooks were compiled into a CSV file for NST samples and a CSV for surface sediment samples. 
      Process_Date: 2023
      Source_Produced_Citation_Abbreviation: Grain_Size_Data_Dictionary.docx
      Source_Produced_Citation_Abbreviation: Grand_Bay_NST_Grain_Size_Data_20CCT02_23CCT01.csv
      Source_Produced_Citation_Abbreviation: Grand_Bay_Surface_Grain_Size_Data_22CCT01_23CCT01.csv
      Process_Contact:
        Contact_Information:
          Contact_Organization_Primary:
            Contact_Organization: U.S. Geological Survey - St. Petersburg Coastal and Marine Science Center
            Contact_Person: Kathryn E.L. Smith
          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: U.S.
          Contact_Voice_Telephone: (727) 502-8000
          Contact_Electronic_Mail_Address: jterrano@usgs.gov
Entity_and_Attribute_Information:
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label: Grand_Bay_NST_Sediment_Physical_Properties_20CCT02_23CCT01.csv
      Entity_Type_Definition: Physical properties of sediment deposited on NSTs located in the marsh at Grand Bay National Estuarine Research Reserve, Mississippi, from October 2020 to January 2023. Blanks indicate no data.
      Entity_Type_Definition_Source: USGS
    Attribute:
      Attribute_Label: Sample_ID
      Attribute_Definition: Sample identification number.
      Attribute_Definition_Source: USGS
      Attribute_Domain_Values:
        Unrepresentable_Domain: Character string. Sample IDs listed within the table used the naming convention FAN-GBXYY-TZZ, where FAN represents the USGS abbreviated field activity number (21CCT01, 21CCT05, 22CCT01, 22CCT03, 22CCT05, 22CCT07, 23CCT01), GB denotes samples are from Grand Bay, X is the site number (5, 6, 7, 8, or 9), YY is the NST plot distance from the shoreline (5 m represented as "01", 10 m as "02", 15 m as "03", 20 m as "04", and 25 m as "05"), T denotes the sample collected was from a net sedimentation tile (NST), and ZZ is the NST number (Unglazed storm deployment tiles are 1 through 105, unglazed are 200 through 260 and glazed are 400 through 460). For example, sample ID 23CCT01-GB501-T201 is from the first collection trip of the year (21CCT03) from Site 5 in the 5-meter plot and was NST number 201 (a glazed NST).
    Attribute:
      Attribute_Label: Site
      Attribute_Definition: Site number.
      Attribute_Definition_Source: USGS
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 5
          Range_Domain_Maximum: 9
    Attribute:
      Attribute_Label: Distance
      Attribute_Definition: Distance inland to the NST plot from the shoreline, in meters.
      Attribute_Definition_Source: USGS
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 5
          Range_Domain_Maximum: 25
          Attribute_Units_of_Measure: meters
    Attribute:
      Attribute_Label: NST_number
      Attribute_Definition: Net sedimentation tile number.
      Attribute_Definition_Source: USGS
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 7
          Range_Domain_Maximum: 415
    Attribute:
      Attribute_Label: NST_type
      Attribute_Definition: Codes used to identify the type of NST that was deployed.
      Attribute_Definition_Source: USGS
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: G
          Enumerated_Domain_Value_Definition: Code representing NST constructed using a glazed standard tile.
          Enumerated_Domain_Value_Definition_Source: USGS
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: U
          Enumerated_Domain_Value_Definition: Code representing NST constructed using the unglazed specialty craft store tile.
          Enumerated_Domain_Value_Definition_Source: USGS
    Attribute:
      Attribute_Label: FAN
      Attribute_Definition: USGS field activity number (FAN) assigned to each sample collection trip.
      Attribute_Definition_Source: USGS
      Attribute_Domain_Values:
        Unrepresentable_Domain: Field activity numbers were assigned by the USGS to track field collection of samples. The FAN consists of YYYY-XXX-FA, with YYYY being the 4-digit year, XXX being the trip number, and FA representing that it is a field activity.
    Attribute:
      Attribute_Label: Alt_FAN
      Attribute_Definition: Alternate (abbreviated) FAN assigned for each collection trip.
      Attribute_Definition_Source: USGS
      Attribute_Domain_Values:
        Unrepresentable_Domain: Alternate FANs were assigned by the USGS and are YYCCTXX, where YY is the 2-digit year, CCT stands for coastal change and transport (a USGS project identifier), and XX is the assigned trip number.
    Attribute:
      Attribute_Label: Days
      Attribute_Definition: Number of days the NSTs were deployed on the marsh.
      Attribute_Definition_Source: USGS
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 8
          Range_Domain_Maximum: 98
          Attribute_Units_of_Measure: Days
    Attribute:
      Attribute_Label: Deployment_Date
      Attribute_Definition: Date the NSTs were deployed in Grand Bay in M/DD/YYYY or MM/DD/YYYY format.
      Attribute_Definition_Source: USGS
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 10/8/2020
          Range_Domain_Maximum: 11/8/2022
    Attribute:
      Attribute_Label: Collection_Date
      Attribute_Definition: Date the NSTs were retrieved from Grand Bay in M/DD/YYYY or MM/DD/YYYY format.
      Attribute_Definition_Source: USGS
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 10/16/2020
          Range_Domain_Maximum: 1/31/2023
    Attribute:
      Attribute_Label: Total_Volume
      Attribute_Definition: Wet volume of the sediment, measured in milliliters (mL).
      Attribute_Definition_Source: USGS
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 1052
          Attribute_Units_of_Measure: milliliters (mL)
    Attribute:
      Attribute_Label: Bulk_Density_Volume
      Attribute_Definition: Wet volume of the bulk density sediment sample, measured in milliliters (mL).
      Attribute_Definition_Source: USGS
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0.3
          Range_Domain_Maximum: 50
          Attribute_Units_of_Measure: milliliters (mL)
    Attribute:
      Attribute_Label: Wet_wt
      Attribute_Definition: Wet weight of the bulk density sediment sample, measured in grams (g).
      Attribute_Definition_Source: USGS
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0.23
          Range_Domain_Maximum: 94.11
          Attribute_Units_of_Measure: Grams (g)
    Attribute:
      Attribute_Label: Dry_wt
      Attribute_Definition: Weight of the dry bulk density sediment sample after drying for 48 hours at 60 degrees Celsius, measured in grams (g).
      Attribute_Definition_Source: USGS
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0.05
          Range_Domain_Maximum: 77.96
          Attribute_Units_of_Measure: Grams (g)
    Attribute:
      Attribute_Label: DBD_QA
      Attribute_Definition: Codes used to identify errors or important notations when analyzing the dry bulk density data. If two letters are present, the error represents a combination of multiple error codes.
      Attribute_Definition_Source: USGS
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 0
          Enumerated_Domain_Value_Definition: Code representing data that meets all quality control and accuracy (QA/QC) requirements.
          Enumerated_Domain_Value_Definition_Source: USGS
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: C
          Enumerated_Domain_Value_Definition: Code representing NST that had minor deficiencies meeting QA/QC requirements, but the overall data quality is judged to be reliable.
          Enumerated_Domain_Value_Definition_Source: USGS
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: J
          Enumerated_Domain_Value_Definition: Code representing NST that did not have enough sediment to complete all sedimentary analyses.
          Enumerated_Domain_Value_Definition_Source: USGS
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: R
          Enumerated_Domain_Value_Definition: Code representing NST with reported DBD values rejected due to deficiency in QA/QC requirements.
          Enumerated_Domain_Value_Definition_Source: USGS
    Attribute:
      Attribute_Label: LOI_OM
      Attribute_Definition: Loss on ignition organic matter. Blank cells represent no data.
      Attribute_Definition_Source: USGS
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0.003139354
          Range_Domain_Maximum: 0.229110403
    Attribute:
      Attribute_Label: LOI_OM_STDEV
      Attribute_Definition: Loss on ignition organic matter standard deviation.
      Attribute_Definition_Source: USGS
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0.000121873
          Range_Domain_Maximum: 0.007263931
    Attribute:
      Attribute_Label: Storm
      Attribute_Definition: Name of hurricane that passed over or near the NST sites during the collection period.
      Attribute_Definition_Source: USGS
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: Delta
          Enumerated_Domain_Value_Definition: Hurricane Delta (in 2020)
          Enumerated_Domain_Value_Definition_Source: USGS
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: Ida
          Enumerated_Domain_Value_Definition: Hurricane Ida (in 2021)
          Enumerated_Domain_Value_Definition_Source: USGS
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label: Grand_Bay_Surface_Sediment_Physical_Properties_22CCT01_23CCT01.csv
      Entity_Type_Definition: Physical properties of sediment deposited on the marsh surface near the NST plots at Grand Bay National Estuarine Research Reserve, Mississippi, from February 2022 to January 2023.
      Entity_Type_Definition_Source: USGS
    Attribute:
      Attribute_Label: Sample_ID
      Attribute_Definition: Sample identification number.
      Attribute_Definition_Source: USGS
      Attribute_Domain_Values:
        Unrepresentable_Domain: Character string. Sample IDs listed within the table used the naming convention FAN-GBXYYS or FAN-GBX-S-Z or FAN-GBX-D-Z, where FAN represents the USGS abbreviated field activity number (22CCT01, 22CCT03, 23CCT01), GB denotes samples are from Grand Bay, X is the NST site number (5, 6, 7, 8, 9) or estuary site number (8S, 8D, 9S, 9D), YY is the NST plot distance from the shoreline (5 m represented as "01", 10 m as "02", 15 m as "03", 20 m as "04", and 25 m as "05") with estuary sites as "NA" values, S denotes the sample collected was from the sediment surface, and Z is the replicate sample identifier. For example, sample ID 22CCT01-GB501S is from the first collection trip of the 2022 (22CCT01) from Site 5 in the 5-meter plot from the sediment surface.
    Attribute:
      Attribute_Label: Site
      Attribute_Definition: Site number 
      Attribute_Definition_Source: USGS
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 5
          Range_Domain_Maximum: 9
    Attribute:
      Attribute_Label: Distance
      Attribute_Definition: Distance inland to the NST plot from the shoreline. NA represents the distance was not applicable for that sample.
      Attribute_Definition_Source: USGS
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 5
          Range_Domain_Maximum: 25
    Attribute:
      Attribute_Label: FAN
      Attribute_Definition: USGS field activity number (FAN) assigned to each sample collection trip.
      Attribute_Definition_Source: USGS
      Attribute_Domain_Values:
        Unrepresentable_Domain: Field activity numbers were assigned by the USGS to track field collection of samples. The FAN consists of YYYY-XXX-FA, with YYYY being the 4-digit year, XXX being the trip number, and FA representing that it is a field activity.
    Attribute:
      Attribute_Label: Alt_FAN
      Attribute_Definition: Alternate (abbreviated) FAN assigned each collection trip.
      Attribute_Definition_Source: USGS
      Attribute_Domain_Values:
        Unrepresentable_Domain: Alternate FANs were assigned by the USGS and are YYCCTXX, where YY is the 2-digit year, CCT stands for coastal change and transport (a USGS project identifier), and XX is the assigned trip number.
    Attribute:
      Attribute_Label: Collection_Date
      Attribute_Definition: Date the NSTs were retrieved from Grand Bay in M/DD/YYYY or MM/DD/YYYY format.
      Attribute_Definition_Source: USGS
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 2/14/2020
          Range_Domain_Maximum: 1/31/2023
    Attribute:
      Attribute_Label: Bulk_Density_Volume
      Attribute_Definition: Wet volume of the bulk density sediment sample, measured in milliliters (mL).
      Attribute_Definition_Source: USGS
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 10
          Range_Domain_Maximum: 50
          Attribute_Units_of_Measure: milliliters (mL)
    Attribute:
      Attribute_Label: Wet_wt
      Attribute_Definition: Wet weight of the bulk density sediment sample, measured in grams (g).
      Attribute_Definition_Source: USGS
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 13.31
          Range_Domain_Maximum: 95.15
          Attribute_Units_of_Measure: Grams (g)
    Attribute:
      Attribute_Label: Dry_wt
      Attribute_Definition: Weight of the dry bulk density sediment sample after drying for 48 hours at 60 degrees Celsius, measured in grams (g).
      Attribute_Definition_Source: USGS
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 5.74
          Range_Domain_Maximum: 75.86
          Attribute_Units_of_Measure: Grams (g)
    Attribute:
      Attribute_Label: DBD_QA
      Attribute_Definition: Codes used to identify errors or important notations when analyzing the dry bulk density data.
      Attribute_Definition_Source: USGS
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 0
          Enumerated_Domain_Value_Definition: Code representing data that meets all quality control and accuracy (QA/QC) requirements.
          Enumerated_Domain_Value_Definition_Source: USGS
    Attribute:
      Attribute_Label: LOI_OM_mean
      Attribute_Definition: Loss on ignition organic matter (mean). Blank cells represent no data.
      Attribute_Definition_Source: USGS
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0.00045
          Range_Domain_Maximum: 0.1418
    Attribute:
      Attribute_Label: LOI_OM_STDEV
      Attribute_Definition: Loss on ignition organic matter standard deviation (if replicate samples were run for the designated sample). Blank cells represent no data.
      Attribute_Definition_Source: USGS
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0.0001
          Range_Domain_Maximum: 0.0012
  Overview_Description:
    Entity_and_Attribute_Overview: The detailed grain size attribute descriptions for the NST and surface sediment data are provided in the included data dictionary (Grain_Size_Data_Dictionary.docx).  These metadata are not complete without this file. The grain size data dictionary applies to data within GB_SurfaceSediment_Data_2021_2023.zip  and GB_Net_Sedimentation_Tile_Data_2020_2023.zip. 
    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: USGS SPCMSC Data Management
      Contact_Address:
        Address_Type: mailing and physical
        Address: 600 4th Street South
        City: Saint Petersburg
        State_or_Province: FL
        Postal_Code: 33701
        Country: United States
      Contact_Voice_Telephone: 727-502-8000
      Contact_Electronic_Mail_Address: gs-g-spcmsc_data_inquiries@usgs.gov
  Resource_Description: Grand_Bay_Surface_Grain_Size_Data_22CCT01_23CCT01.csv, Grand_Bay_Surface_Sediment_Physical_Properties_22CCT01_23CCT01.csv, Grand_Bay_NST_Grain_Size_Data_20CCT02_23CCT01.csv, Grand_Bay_NST_Sediment_Physical_Properties_20CCT02_23CCT01.csv, Grain_Size_Data_Dictionary.docx
  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. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
  Standard_Order_Process:
    Digital_Form:
      Digital_Transfer_Information:
        Format_Name: Comma-delimited text
      Digital_Transfer_Option:
        Online_Option:
          Computer_Contact_Information:
            Network_Address:
              Network_Resource_Name: https://coastal.er.usgs.gov/data-release/doi-P13VT3ET/data/GB_Net_Sedimentation_Tile_Data_2020_2023.zip
              Network_Resource_Name: https://coastal.er.usgs.gov/data-release/doi-P13VT3ET/data/GB_SurfaceSediment_Data_2021_2023.zip
    Fees: None
Metadata_Reference_Information:
  Metadata_Date: 20250618
  Metadata_Contact:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center
        Contact_Person: USGS SPCMSC Data Management
      Contact_Address:
        Address_Type: mailing and physical
        Address: 600 4th Street South
        City: Saint Petersburg
        State_or_Province: FL
        Postal_Code: 33701
        Country: United States
      Contact_Voice_Telephone: 727-502-8000
      Contact_Electronic_Mail_Address: gs-g-spcmsc_data_inquiries@usgs.gov
  Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata
  Metadata_Standard_Version: FGDC-STD-001-1998