[Northern Gulf of Mexico pore geochemical data] - Depth profiles of pore water constituents from sediment cores collected on the Louisiana Shelf of the Northern Gulf of Mexico during 2020, 2021, and 2022 on R/V Savannah cruises SAV-20-07, SAV-21-25, SAV-21-24, SAV-22-06, and SAV-22-11 (Importance of Riverine Discharge on the Benthic Flux of Alkalinity to Continental Margins)

Project: BCO-DMO Name: BCO-DMO Email: info@bco-dmo.org Institution: BCO-DMO InfoURL: https://osprey.bco-dmo.org/dataset/904417 Source URL: (local files) [Northern Gulf of Mexico pore geochemical data] - Depth profiles of pore water constituents from sediment cores collected on the Louisiana Shelf of the Northern Gulf of Mexico during 2020, 2021, and 2022 on R/V Savannah cruises SAV-20-07, SAV-21-25, SAV-21-24, SAV-22-06, and SAV-22-11 (Importance of Riverine Discharge on the Benthic Flux of Alkalinity to Continental Margins) Unknown tabular digital data Woods Hole, MA, USA ERDDAP, version 2.22, at BCO-DMO https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_904417_v2.html https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_904417_v2.graph BCO-DMO This data set reports depth profiles of pore water concentrations of dissolved inorganic carbon (DIC), orthophosphate (PO43-), ammonium (NH4+), total alkalinity (TA), carbon isotopic fractionation of DIC (13C-DIC), dissolved manganese (Mnd), dissolved calcium (Cad), reduced iron (Fe(II)), total dissolved Fe (Fed), and dissolved Fe(III) (Fe(III)d) by the difference of total dissolved Fe and Fe(II). Data were collected during five R/V Savannah cruises in fall 2020, summer and fall 2021, and fall and spring 2022. On each cruise pore water data were obtained from sediment cores collected with an MC-800 multi-corer at multiple stations. Cruise IDs were: SAV-20-07, SAV-21-25, SAV-21-24, SAV-22-06, SAV-22-11. All cores were processed within a few hours after collection. The pore waters were first extracted by slicing sediment cores of < 40 centimeters (cm) long and centrifugation of the pore waters under N2 atmosphere to avoid air contamination. Pore waters were then immediately filtered through 0.22-micrometer (um) PSE syringe filters under N2 atmosphere and either analyzed immediately onboard (Fe speciation, orthophosphate, DIC), preserved acidified with hydrochloric acid at 4 degrees Celsius (Cad, Mnd), frozen (ammonium), or preserved at 4 degrees Celsius after addition of HgCl2 (TA) until analysis. In addition, samples for TA and carbon isotopic analyses were preserved in glass bottles, whereas other samples were preserved in polypropylene containers. DIC was analyzed by flow injection analysis (Hall and Aller, 1992), orthophosphate, ammonium, and Fe speciation by spectrophotometry (Murphy and Riley, 1962; Strickland and Parsons, 1972; Stookey, 1970), TA by Gran titration (Gran, 1952), the carbon isotopic signature by isotope ratio mass spectrometry (Wang et al, 2018), and Mnd and Cad by ICP-MS (Magette et al., 2025 In preparation). Unknown https://osprey.bco-dmo.org/dataset/904417 Unknown Unknown ground condition Complete As needed -91.33712 -88.60532 28.94785 28.19917 Uncontrolled earth science atmosphere ocean biosphere biology environment Uncontrolled longitude latitude None. The data may be used and redistributed for free but is not intended for legal use, since it may contain inaccuracies. Neither the data Contributor, ERD, NOAA, nor the United States Government, nor any of their employees or contractors, makes any warranty, express or implied, including warranties of merchantability and fitness for a particular purpose, or assumes any legal liability for the accuracy, completeness, or usefulness, of this information. BCO-DMO BCO-DMO Unknown Mailing and Physical Address

Unknown

Unknown Unknown Unknown Unknown Unknown info@bco-dmo.org https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_904417_v2.graph Web page to make a customized map or graph of the data HTML Unknown Unknown Unknown Unknown Unknown Unknown Point Point BCO-DMO Adam Shepherd Technical Director Mailing and Physical Address

266 Woods Hole Rd. MS#36

Woods Hole MA 02543 USA 508-289-2772 erddap@bco-dmo.org ERDDAP, version 2.22: get metadata; download data; make graphs and maps. The data may be used and redistributed for free but is not intended for legal use, since it may contain inaccuracies. Neither the data Contributor, ERD, NOAA, nor the United States Government, nor any of their employees or contractors, makes any warranty, express or implied, including warranties of merchantability and fitness for a particular purpose, or assumes any legal liability for the accuracy, completeness, or usefulness, of this information. .asc 1 View OPeNDAP-style ISO-8859-1 comma-separated text. https://docs.opendap.org/index.php/UserGuideOPeNDAPMessages#ASCII_Service https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_904417_v2.html .csv 1 Download a ISO-8859-1 comma-separated text table (line 1: names; line 2: units; ISO 8601 times). https://en.wikipedia.org/wiki/Comma-separated_values https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_904417_v2.html .csvp 1 Download a ISO-8859-1 .csv file with line 1: name (units). Times are ISO 8601 strings. https://en.wikipedia.org/wiki/Comma-separated_values https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_904417_v2.html .csv0 1 Download a ISO-8859-1 .csv file without column names or units. Times are ISO 8601 strings. https://en.wikipedia.org/wiki/Comma-separated_values https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_904417_v2.html .dataTable 1 A JSON file formatted for use with the Google Visualization client library (Google Charts). https://developers.google.com/chart/interactive/docs/reference#dataparam https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_904417_v2.html .das 1 View the dataset's metadata via an ISO-8859-1 OPeNDAP Dataset Attribute Structure (DAS). https://docs.opendap.org/index.php/UserGuideOPeNDAPMessages#Dataset_Attribute_Structure https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_904417_v2.html .dds 1 View the dataset's structure via an ISO-8859-1 OPeNDAP Dataset Descriptor Structure (DDS). https://docs.opendap.org/index.php/UserGuideOPeNDAPMessages#Dataset_Descriptor_Structure https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_904417_v2.html .dods 1 OPeNDAP clients use this to download the data in the DODS binary format. https://docs.opendap.org/index.php/UserGuideOPeNDAPMessages#Data_Transmission https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_904417_v2.html .esriCsv 1 Download a ISO_8859_1 .csv file for ESRI's ArcGIS 9.x and below (separate date and time columns). https://support.esri.com/technical-article/000012745 https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_904417_v2.html .fgdc 1 View the dataset's UTF-8 FGDC .xml metadata. https://www.fgdc.gov/standards/projects/FGDC-standards-projects/metadata/base-metadata/index_html https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_904417_v2.html .geoJson 1 Download longitude,latitude,otherColumns data as a UTF-8 GeoJSON .json file. http://wiki.geojson.org/Main_Page https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_904417_v2.html .graph 1 View a Make A Graph web page. https://coastwatch.pfeg.noaa.gov/erddap/tabledap/documentation.html#GraphicsCommands https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_904417_v2.html .help 1 View a web page with a description of tabledap. https://www.opendap.org/pdf/ESE-RFC-004v1.2.pdf https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_904417_v2.html .html 1 View an OPeNDAP-style HTML Data Access Form. https://docs.opendap.org/index.php/UserGuideOPeNDAPMessages#WWW_Interface_Service https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_904417_v2.html .htmlTable 1 View a UTF-8 .html web page with the data in a table. Times are ISO 8601 strings. https://www.w3schools.com/html/html_tables.asp https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_904417_v2.html .iso19115 1 View the dataset's ISO 19115-2/19139 UTF-8 .xml metadata. https://en.wikipedia.org/wiki/Geospatial_metadata https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_904417_v2.html .itx 1 Download an ISO-8859-1 Igor Text File. Each response column becomes a wave. https://www.wavemetrics.net/doc/igorman/II-09%20Data%20Import%20Export.pdf https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_904417_v2.html .json 1 View a table-like UTF-8 JSON file (missing value = 'null'; times are ISO 8601 strings). https://www.json.org/ https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_904417_v2.html .jsonlCSV1 1 View a UTF-8 JSON Lines CSV file with column names on line 1 (mv = 'null'; times are ISO 8601 strings). https://jsonlines.org/ https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_904417_v2.html .jsonlCSV 1 View a UTF-8 JSON Lines CSV file without column names (mv = 'null'; times are ISO 8601 strings). https://jsonlines.org/ https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_904417_v2.html .jsonlKVP 1 View a UTF-8 JSON Lines file with Key:Value pairs (missing value = 'null'; times are ISO 8601 strings). https://jsonlines.org/ https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_904417_v2.html .mat 1 Download a MATLAB binary file. https://www.mathworks.com/ https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_904417_v2.html .nc 1 Download a flat, table-like, NetCDF-3 binary file with COARDS/CF/ACDD metadata. https://www.unidata.ucar.edu/software/netcdf/ https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_904417_v2.html .ncHeader 1 View the UTF-8 header (the metadata) for the NetCDF-3 .nc file. https://linux.die.net/man/1/ncdump https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_904417_v2.html .ncCF 1 Download a NetCDF-3 CF Discrete Sampling Geometries file (Contiguous Ragged Array). https://cfconventions.org/Data/cf-conventions/cf-conventions-1.8/cf-conventions.html#discrete-sampling-geometries https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_904417_v2.html .ncCFHeader 1 View the UTF-8 header (the metadata) for the .ncCF file. https://linux.die.net/man/1/ncdump https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_904417_v2.html .ncCFMA 1 Download a NetCDF-3 CF Discrete Sampling Geometries file (Multidimensional Array). https://www.ncei.noaa.gov/netcdf-templates https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_904417_v2.html .ncCFMAHeader 1 View the UTF-8 header (the metadata) for the .ncCFMA file. https://linux.die.net/man/1/ncdump https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_904417_v2.html .nccsv 1 Download a NetCDF-3-like 7-bit ASCII NCCSV .csv file with COARDS/CF/ACDD metadata. https://coastwatch.pfeg.noaa.gov/erddap/download/NCCSV.html https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_904417_v2.html .nccsvMetadata 1 View the dataset's metadata as the top half of a 7-bit ASCII NCCSV .csv file. https://coastwatch.pfeg.noaa.gov/erddap/download/NCCSV.html https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_904417_v2.html .ncoJson 1 Download a UTF-8 NCO lvl=2 JSON file with COARDS/CF/ACDD metadata. https://nco.sourceforge.net/nco.html#json https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_904417_v2.html .odvTxt 1 Download longitude,latitude,time,otherColumns as an ISO-8859-1 ODV Generic Spreadsheet File (.txt). https://odv.awi.de/en/documentation/ https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_904417_v2.html .subset 1 View an HTML form which uses faceted search to simplify picking subsets of the data. https://en.wikipedia.org/wiki/Faceted_search https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_904417_v2.html .tsv 1 Download a ISO-8859-1 tab-separated text table (line 1: names; line 2: units; ISO 8601 times). https://jkorpela.fi/TSV.html https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_904417_v2.html .tsvp 1 Download a ISO-8859-1 .tsv file with line 1: name (units). Times are ISO 8601 strings. https://jkorpela.fi/TSV.html https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_904417_v2.html .tsv0 1 Download a ISO-8859-1 .tsv file without column names or units. Times are ISO 8601 strings. https://jkorpela.fi/TSV.html https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_904417_v2.html .wav 1 Download a .wav audio file. All columns must be numeric and of the same type. https://en.wikipedia.org/wiki/WAV https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_904417_v2.html .xhtml 1 View a UTF-8 XHTML (XML) file with the data in a table. Times are ISO 8601 strings. https://www.w3schools.com/html/html_tables.asp https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_904417_v2.html .kml 1 View a .kml file, suitable for Google Earth. https://developers.google.com/kml/ https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_904417_v2.graph .smallPdf 1 View a small .pdf image file with a graph or map. https://www.adobe.com/acrobat/about-adobe-pdf.html https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_904417_v2.graph .pdf 1 View a standard, medium-sized .pdf image file with a graph or map. https://www.adobe.com/acrobat/about-adobe-pdf.html https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_904417_v2.graph .largePdf 1 View a large .pdf image file with a graph or map. https://www.adobe.com/acrobat/about-adobe-pdf.html https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_904417_v2.graph .smallPng 1 View a small .png image file with a graph or map. http://www.libpng.org/pub/png/ https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_904417_v2.graph .png 1 View a standard, medium-sized .png image file with a graph or map. http://www.libpng.org/pub/png/ https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_904417_v2.graph .largePng 1 View a large .png image file with a graph or map. http://www.libpng.org/pub/png/ https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_904417_v2.graph .transparentPng 1 View a .png image file (just the data, without axes, landmask, or legend). http://www.libpng.org/pub/png/ https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_904417_v2.graph None 20260714 BCO-DMO Adam Shepherd Technical Director Mailing and Physical Address

266 Woods Hole Rd. MS#36

Woods Hole MA 02543 USA 508-289-2772 erddap@bco-dmo.org Content Standard for Digital Geospatial Metadata FGDC-STD-012-2002 universal time None. The data may be used and redistributed for free but is not intended for legal use, since it may contain inaccuracies. Neither the data Contributor, ERD, NOAA, nor the United States Government, nor any of their employees or contractors, makes any warranty, express or implied, including warranties of merchantability and fitness for a particular purpose, or assumes any legal liability for the accuracy, completeness, or usefulness, of this information.