Metadata: Identification_Information: Citation: Citation_Information: Originator: Alisha M. Ellis Originator: Marci E. Marot Originator: Christopher G. Smith Originator: Cathryn J. Wheaton Publication_Date: 20170410 Title: Textural description of surface sediment samples collected in August 2015 from Dauphin Island and the surrounding areas Geospatial_Data_Presentation_Form: Tabular digital data Series_Information: Series_Name: U.S. Geological Survey Data Series Issue_Identification: DS1046 Online_Linkage: https://pubs.usgs.gov/ds/1046/data/15BIM09-DA-Compiled_Grain_Size_Data.xlsx.zip Larger_Work_Citation: Citation_Information: Originator: Alisha M. Ellis Originator: Marci E. Marot Originator: Christopher G. Smith Originator: Cathryn J. Wheaton Publication_Date: 20170410 Title: The Physical Characteristics of the Sediments on and Surrounding Dauphin Island, Alabama Edition: 1.0 Geospatial_Data_Presentation_Form: Multimedia presentation Series_Information: Series_Name: U.S. Geological Survey Data Series Issue_Identification: DS1046 Publication_Information: Publication_Place: St. Petersburg, FL Publisher: U.S. Geological Survey - St. Petersburg Coastal and Marine Science Center Online_Linkage: https://doi.org/10.3133/ds1046 Description: Abstract: Scientists from the U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center collected 303 surface sediment samples from Dauphin Island, Alabama, and the surrounding water bodies in August 2015. These sediments were processed to determine physical characteristics such as organic content, bulk density, and grain-size. The environments where the sediments were collected include high and low salt marshes, over-wash deposits, dunes, beaches, sheltered bays, and open water. Sampling by the USGS was part of a larger study to assess the feasibility and sustainability of proposed restoration efforts for Dauphin Island, Alabama, and assess the island’s resilience to rising sea level and storm events. The data presented in this publication can be used by modelers to attempt validation of hindcast models and create predictive forecast models for both baseline conditions and storms. This study was funded by the National Fish and Wildlife Foundation, via the Gulf Environmental Benefit Fund. This report serves as an archive for sedimentological data derived from surface sediments. Downloadable data are available as Excel spreadsheets, JPEG files, and formal Federal Geographic Data Committee metadata (data downloads). Purpose: The 15BIM09-DA-Compiled_Grain_Size_Data.xlsx.zip file includes Excel spreadsheets summarizing particle size analysis results from on and around Dauphin Island, Alabama, collected August 12 - 20, 2015 by the U.S. Geological Survey (USGS), St. Petersburg Coastal and Marine Science Center. Supplemental_Information: The unedited output 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 in two spreadsheets, which can be downloaded from http://pubs.usgs.gov/ds/1046/data downloads/15BIM09-DA-Compiled_Grain_Size_Data.xlsx.zip Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20150812 Ending_Date: 20150820 Currentness_Reference: Ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -88.34300 East_Bounding_Coordinate: -88.04000 North_Bounding_Coordinate: 30.30000 South_Bounding_Coordinate: 30.17000 Keywords: Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:c1e2b70c-e1e0-4b7b-b128-c7676b1fe195 Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: biota Theme_Keyword: oceans Theme_Keyword: geoscientific information Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: unconsolidated deposits Theme_Keyword: geology Theme_Keyword: geomorphology Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: Dauphin Island Theme_Keyword: sediment Theme_Keyword: surface Theme_Keyword: grain size Theme_Keyword: GRADISTAT Theme_Keyword: mean Theme_Keyword: sorting Theme_Keyword: skewness Theme_Keyword: kurtosis Theme_Keyword: Folk and Ward Theme_Keyword: U.S. Geological Survey St. Petersburg Coastal and Marine Science Center Theme_Keyword: U.S. Geological Survey Theme_Keyword: USGS Theme_Keyword: Barrier Island Mapping Place: Place_Keyword_Thesaurus: Geographic Names Information System (GNIS) Place_Keyword: Dauphin Island Place_Keyword: Pelican Bay Place_Keyword: Mississippi Sound Place: Place_Keyword_Thesaurus: Common Geographic Areas Place_Keyword: Alabama Place_Keyword: Gulf of Mexico Stratum: Stratum_Keyword_Thesaurus: None Stratum_Keyword: water Stratum_Keyword: quality Temporal: Temporal_Keyword_Thesaurus: None Temporal_Keyword: August 2015 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: Alisha M. Ellis Contact_Position: 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: aellis@usgs.gov Data_Set_Credit: U.S. Geological Survey, Coastal and Marine Geology Program, St. Petersburg Coastal and Marine Science Center Native_Data_Set_Environment: Apple OS X El Capitan Version 10.11.6; Microsoft Excel for Mac 2016 Version 15.22 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 Other_Citation_Details: Pages 1237-1248 Online_Linkage: http://www.kpal.co.uk/gradistat.html Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: The grain size data presented in the run statistics spreadsheets (http://pubs.usgs.gov/ds/1046/data downloads/15BIM09-DA-Compiled_Grain_Size_Data.xlsx.zip) 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. Logical_Consistency_Report: The complete grain size dataset including all GRADISTAT parameters, results of individual sample runs, and standard deviations for all sample averages are available upon request. Sample runs in the output files for which the mean Folk and Ward 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 is a complete grain size dataset that includes results for 296 surface sediment samples collected on and around Dauphin Island, Alabama. Lineage: Process_Step: Process_Description: 303 surface sediment samples were collected on and around Dauphin Island by hand, PONAR grab, or a VanVeen sediment sampler attached to a miniSEABOSS. Samples were transported to the USGS St. Petersburg Coastal and Marine Science Center (SPCMSC) for analysis. Of the 303 surface samples collected, seven were not analyzed due to an abundance of oyster shells. Prior to particle size analysis, sediment samples which appeared to consist of greater than 5 percent organic material had the organic matter chemically removed from the samples using approximately 8 mL of 30 percent hydrogen peroxide (H2O2) 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 C. To prevent shell fragments from damaging the Coulter LS200, particles greater than 1 mm in diameter were separated from all samples prior to analysis with a number 18 (1000 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 filtered municipal 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 LS200 to break down aggregated particles. Two subsamples from each sample were processed through the Coulter LS200 with a minimum of four runs apiece. The Coulter LS200 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. Process_Date: 2015 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Alisha M. Ellis Contact_Position: 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: aellis@usgs.gov Process_Step: Process_Description: The raw grain-size data were then run through the free software program, GRADISTAT version 8, (Blott and Pye, 2001; kpal.co.uk/gradistat),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 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 (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 raw, unaltered, individual run statistics and class size distribution as produced by GRADISTAT version 8 (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. Process_Date: 2015 Source_Produced_Citation_Abbreviation: 15BIM09-DA-Compiled_Grain_Size_Data.xlsx.zip Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Alisha M. Ellis Contact_Position: 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: aellis@usgs.gov Process_Step: Process_Description: Added keywords section with USGS persistent identifier as theme keyword. Process_Date: 20201013 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: VeeAnn A. Cross Contact_Position: Marine Geologist Contact_Address: Address_Type: Mailing and Physical Address: 384 Woods Hole Road City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Contact_Voice_Telephone: 508-548-8700 x2251 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: vatnipp@usgs.gov Entity_and_Attribute_Information: Overview_Description: Entity_and_Attribute_Overview: The detailed attribute descriptions for the statistics summary workbooks are provided in the included data dictionary (http://pubs.usgs.gov/ds/1046/surface-sediment-characteristics/data downloads/Grain-Size_Data-Dictionary.pdf). These metadata are not complete without this file. Entity_and_Attribute_Detail_Citation: Data Dictionary for Grain Size Data Tables, in: Ellis and others, The Physical Characteristics of the Sediments on and Surrounding Dauphin Island, Alabama: U.S. Geological Survey Data Series-1046, https://doi.org/10.3133/ds1046. Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey St. Petersburg Coastal and Marine Science Center Contact_Person: Alisha M. Ellis Contact_Position: 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: aellis@usgs.gov Resource_Description: 15BIM09-DA-Compiled_Grain_Size_Data.xlsx.zip Distribution_Liability: 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. 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: Microsoft Excel Format_Version_Number: 2016 Format_Specification: .xlxs File_Decompression_Technique: Unzip Transfer_Size: 0.192 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://pubs.usgs.gov/ds/1046/data/15BIM09-DA-Compiled_Grain_Size_Data.xlsx.zip Fees: None, if obtained online Technical_Prerequisites: The workbook included in this .zip file was created for use with Microsoft Excel 2016. They may also be viewed with the Microsoft Excel viewer or by downloading a Microsoft Compatibility Pack to view with older versions of Microsoft Excel. Metadata_Reference_Information: Metadata_Date: 20210923 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Alisha M. Ellis Contact_Position: 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: aellis@usgs.gov Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Access_Constraints: None Metadata_Security_Information: Metadata_Security_Classification_System: None Metadata_Security_Classification: Unclassified Metadata_Security_Handling_Description: None