gov.noaa.nodc:0175003 eng utf8 dataset NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact HTTPS NOAA Contact Information Information for contacts at NCEI. information custodian 2026-02-05T19:01:11Z ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) Sediment samples, ammonium and methane data collected during R/V Atlantis cruise AT26-13 in the northern Gulf of Mexico from 2014-03-31 to 2014-04-21 (NCEI Accession 0175003) 2018-08-07 publication 2018-07-31 creation NOAA National Centers for Environmental Information gov.noaa.nodc:0175003 NCEI Archive Management System 0175003 NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact HTTPS NCEI Contact Information Information for contacts at NCEI. information publisher Bipana Sigdel Harte Research Institute (HRI) bipana.sigdel@tamucc.edu https://www.harteresearch.org/ HTTPS Harte Research Institute (HRI) website Institution web page information resourceProvider GRIIDC https://www.griidc.org/ HTTPS GRIIDC website Institution web page information resourceProvider Samantha Joye University of Georgia, School of Marine Programs mjoye@uga.edu http://www.marsci.uga.edu HTTP University of Georgia, School of Marine Programs website Institution web page information pointOfContact Christopher Martens University of North Carolina - Chapel Hill, College of Arts and Sciences, Marine Sciences (UNC) cmartens@email.unc.edu https://marine.unc.edu/ HTTPS University of North Carolina - Chapel Hill, College of Arts and Sciences, Marine Sciences (UNC) website Institution web page information pointOfContact Matthew Saxton University of Georgia, School of Marine Programs msaxton@uga.edu http://www.marsci.uga.edu HTTP University of Georgia, School of Marine Programs website Institution web page information collaborator Kimberley Hunter University of Georgia, School of Marine Programs kshunter@uga.edu http://www.marsci.uga.edu HTTP University of Georgia, School of Marine Programs website Institution web page information collaborator Howard Mendlovitz University of North Carolina - Chapel Hill, College of Arts and Sciences, Marine Sciences (UNC) mendlovitz@unc.edu https://marine.unc.edu/ HTTPS University of North Carolina - Chapel Hill, College of Arts and Sciences, Marine Sciences (UNC) website Institution web page information collaborator Joye, Samantha University of Georgia / Department of Marine Sciences http://www.marsci.uga.edu HTTP University of Georgia, School of Marine Programs website Institution web page information author Martens, Christopher University of North Carolina at Chapel Hill / Department of Marine Sciences https://marine.unc.edu/ HTTPS University of North Carolina - Chapel Hill, College of Arts and Sciences, Marine Sciences (UNC) website Institution web page information author University of Georgia (UGA) https://uga.edu/ HTTPS University of Georgia (UGA) website Institution web page information contributor University of North Carolina - Chapel Hill (UNC) contributor tableDigital This dataset contains sediment samples, ammonium concentrations and methane data collected during R/V Atlantis cruise AT26-13 in the northern Gulf of Mexico from March 31 to April 21, 2014. The R/V Atlantis cruise AT26-13 set sail with the HOV Alvin on board on March 30, 2014. GoMRI funded Alvin dives occurred on March 31st and April 1st of 2014. This dataset includes sediment samples collected on those dives. In addition, it also includes water column profiles collected to measure dissolved ammonium concentrations using advanced auto-analyzer equipment from the Martens lab at UNC-Chapel Hill, and methane data taken from around the northern gulf with the METS sensor. The purpose of this cruise were to visit sites impacted by the Macondo Blowout as well as natural seeps sites dominated by oil and gas discharge. The main objectives of this study were to investigate sediment geochemistry, and to track methane and ammonium concentration in order to find out the continuing impact of the Deep Horizon blowout in the northern Gulf of Mexico. Funding Agency: Gulf of Mexico Research Initiative (GoMRI) Funding Agency: Gulf of Mexico Research Initiative Information & Data Cooperative (GRIIDC) completed historicalArchive NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact HTTPS NCEI Contact Information Information for contacts at NCEI. information pointOfContact asNeeded https://www.ncei.noaa.gov/access/metadata/landing-page/bin/gfx?id=gov.noaa.nodc:0175003 Preview graphic PNG 0175003 NCEI ACCESSION NUMBER 2018-07-26 publication CHEMISTRY - SEDIMENT DEPTH - BOTTOM FLUORESCENCE NUTRIENTS pH SALINITY SEDIMENT - POREWATER CHEMISTRY WATER TEMPERATURE theme NODC DATA TYPES THESAURUS in situ profile sediment analysis theme NODC OBSERVATION TYPES THESAURUS DSV Alvin R/V Atlantis platform NODC PLATFORM NAMES THESAURUS University of Georgia University of North Carolina - Chapel Hill dataCentre NODC COLLECTING INSTITUTION NAMES THESAURUS GRIIDC dataCentre NODC SUBMITTING INSTITUTION NAMES THESAURUS Deepwater Horizon oil spill event (DWH) Gulf of Mexico Research Initiative (GoMRI) Gulf of Mexico Research Initiative Information & Data Cooperative (GRIIDC) project NODC PROJECT NAMES THESAURUS Coastal Waters of Gulf of Mexico North Atlantic Ocean place NODC SEA AREA NAMES THESAURUS oceanography theme WMO_CategoryCode 2012-09-15 publication AT26-13 project Cruise ID Ecosystem Impacts of Oil and Gas Inputs to the Gulf (ECOGIG) project Provider Project Names EARTH SCIENCE > OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY > WATER DEPTH EARTH SCIENCE > OCEANS > MARINE SEDIMENTS > SEDIMENT CHEMISTRY EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > NUTRIENTS EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > PH EARTH SCIENCE > OCEANS > OCEAN OPTICS > FLUORESCENCE EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > WATER TEMPERATURE EARTH SCIENCE > OCEANS > SALINITY/DENSITY > SALINITY theme Global Change Master Directory (GCMD) Science Keywords 2026 revision 23 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) Greenbelt MD https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords HTTPS GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian Ammonium concentration Laser methane Methane concentration Methane oxidation Porewater pH Sediment chemistry Sediment pH sea_water_temperature theme Provider Keywords Auto analyzer METS Sensor instrument Provider Instruments SUBMARINE Ships platform Global Change Master Directory (GCMD) Platform Keywords 2026 revision 23 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) Greenbelt MD https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords HTTPS GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian ALVIN (ICES code: 31A5) ATLANTIS (call sign: KAQP, ICES code: 33AT, 1997-) platform ICES/SeaDataNet Ship Codes HOV Alvin (DSV-2) RV Atlantis platform Provider Platform Names OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN > GULF OF AMERICA OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN > GULF OF MEXICO place Global Change Master Directory (GCMD) Location Keywords 2026 revision 23 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) Greenbelt MD https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords HTTPS GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian Northern Gulf of Mexico place Provider Place Names 1BT3AP Send2NCEI Submission Package ID accessLevel: Public otherRestrictions Cite as: Joye, Samantha; Martens, Christopher (2018). Sediment samples, ammonium and methane data collected during R/V Atlantis cruise AT26-13 in the northern Gulf of Mexico from 2014-03-31 to 2014-04-21 (NCEI Accession 0175003). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/0175003. Accessed [date]. Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives. otherRestrictions Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose. Samantha Joye. (2016). Sediment chemistry data collected during R/V Atlantis/Alvin (DSV-2) cruise AT26-13 in the northern Gulf of Mexico from 2014-03-31 to 2014-04-01 [Data set]. Harte Research Institute. https://doi.org/10.7266/n7ns0rw0 2016 publication International DOI Foundation (IDF) https://doi.org/10.7266/n7ns0rw0 https://doi.org/10.7266/n7ns0rw0 HTTPS https://doi.org/10.7266/n7ns0rw0 GRIIDC Data Webpage information Samantha Joye author Harte Research Institute publisher tableDigital crossReference project Christopher Martens. (2016). Methane data from CTD - METS sensor (R/V Atlantis: AT26-13), Gulf of Mexico, March 31- April 21, 2014 [Data set]. Harte Research Institute. https://doi.org/10.7266/n76w984r 2016 publication International DOI Foundation (IDF) https://doi.org/10.7266/n76w984r https://doi.org/10.7266/n76w984r HTTPS https://doi.org/10.7266/n76w984r GRIIDC Data Webpage information Christopher Martens author Harte Research Institute publisher tableDigital crossReference project Christopher Martens. (2016). Ammonium data collected and processed (R/V Atlantis: AT26-13), northern Gulf of Mexico, March 31- April 20, 2014 [Data set]. Harte Research Institute. https://doi.org/10.7266/n7dr2sj5 2016 publication International DOI Foundation (IDF) https://doi.org/10.7266/n7dr2sj5 https://doi.org/10.7266/n7dr2sj5 HTTPS https://doi.org/10.7266/n7dr2sj5 GRIIDC Data Webpage information Christopher Martens author Harte Research Institute publisher tableDigital crossReference project Joye, Samantha (2017). CTD, Oxygen, and others collected from R/V Atlantic/ALVIN in the Gulf of Mexico from 2014-03-31 to 2014-04-21 (NCEI Accession 0162834). NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/0162834. 2017-05-26 publication NOAA National Centers for Environmental Information gov.noaa.nodc:0162834 https://www.ncei.noaa.gov/archive/accession/0162834 HTTPS https://www.ncei.noaa.gov/archive/accession/0162834 CTD Data information Joye, Samantha University of Georgia; School of Marine Programs https://uga.edu/ HTTPS University of Georgia (UGA) website Institution web page information author NOAA National Centers for Environmental Information (NCEI) publisher tableDigital crossReference project eng; USA utf8 environment oceans -92.1082 -88.355489 26.923067 28.852372 2014-03-31 2014-04-21 Data Parameters and Units: AT26-13_ECOGIG.csv file includes: Location, Alvin Dive (dive number), Collection type, Lat (latitude, degrees decimal minutes), Long (longitude, degrees decimal minutes), Date (dd/mm/yyyy), Time (L, Local), Time (Z, zulu), Depth (m, sampling depth of seafloor), Depth Range (cm, depth in sediment), Sediment pH, Porewater pH, salinity (psu), NH4 (uM), NO2(um), NOx (uM, NO3+NO2), NO3 (um), DIN (uM, dissolved inorganic nitrogen), TDN (um, total dissolved nitrogen), NH4 (uM, used for DON measurement), DON (uM, dissolved organic nitrogen), PO4 (uM), DOC (uM, dissolved organic carbon), CH4 (uM), H2 (nM), H2S (mM), Sulfate (mM), Sodium (mM), Potassium (mM), Magnesium (mM), Calcium (mM), Methane Oxidation (pmol cc-1 d-1), Sulfate Reduction (pmol cc-1 day-1), Porosity (%), SOM (LOI, %), TPN (%, total particulate nitrogen), TPC (%, total particulate carbon), POC (%, particulate organic carbon), PIC (%, particulate inorganic carbon), TPP (umol P/g sed, total particulate phosphorus), TPP (%, total particulate phosphorus); GOM-Northern-Gulf-Ammonium.txt file includes: Date (MM/DD/YYYY), Site, Site ID, Latitude (Decimal minutes), Longitude (Decimal minutes), Plume/Background (sample collected in vs 100m adjacent to bubble plume), Depth (meters), Fluorescence (fluorescence units), calc conc (calculated concentration of ammonium, micromolar), Mean Conc (ammonium, nM), Std Dev (standard deviation, nM), Std Error (Standard error, nM); GOM-Northern-Gulf-CH4.tx file includes: Depth (m), Full Time (MM/DD/YYYY HH:MM), Site (region), Site ID (Block number), Temperature 1 from Mets1 G107 E312 (deg C), CH4 from Mets1 G107 E312 (nmol/L), Laser CH4 (ppmv), Temperature from Laser (deg C), Laser CH4(nmols) NOAA National Centers for Environmental Information +1-301-713-3277 ncei.info@noaa.gov pointOfContact In most cases, electronic downloads of the data are free. However, fees may apply for custom orders, data certifications, copies of analog materials, and data distribution on physical media. Contact NCEI for other distribution options and instructions. CSV 13.58 https://www.ncei.noaa.gov/archive/accession/0175003 HTTPS Web browser NCEI Dataset Landing Page Navigate directly to the URL for a descriptive web page with download links. information https://www.ncei.noaa.gov/archive/accession/oas/175003 HTTPS Web browser Descriptive Information Navigate directly to the URL for a descriptive web page with download links. information https://www.ncei.noaa.gov/archive/accession/download/175003 HTTPS Web browser HTTPS Navigate directly to the URL for data access and direct download. download ftp://ftp-oceans.ncei.noaa.gov/nodc/archive/arc0123/0175003/ FTP Any FTP client FTP These data are available through the File Transfer Protocol (FTP). FTP is no longer supported by most internet browsers. You may copy and paste the FTP link to the data into an FTP client (e.g., FileZilla or WinSCP). download dataset NCEI Accession 0175003 v1.1 was published. 2018-08-07T19:58:16Z NCEI Accession 0175003 v1.1 publication https://www.ncei.noaa.gov/archive/accession/0175003/1.1 HTTPS NCEI Accession 0175003 v1.1 published 2018-08-07T19:58:16Z download dataset Parameter or Variable: EARTH SCIENCE > OCEANS > MARINE SEDIMENTS > SEDIMENT CHEMISTRY (measured); Units: various; Observation Category: sediment analysis; Sampling Instrument: In Situ/Laboratory Instruments > Chemical Meters/Analyzers > AUTOANALYZER Parameter or Variable: SEDIMENT - POREWATER CHEMISTRY (measured); Units: various; Observation Category: sediment analysis; Sampling Instrument: In Situ/Laboratory Instruments > Chemical Meters/Analyzers > AUTOANALYZER Parameter or Variable: EARTH SCIENCE > OCEANS > SALINITY/DENSITY > SALINITY (measured); Units: psu; Observation Category: in situ; Sampling Instrument: na Parameter or Variable: EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > NUTRIENTS (measured); Units: various; Observation Category: in situ; Sampling Instrument: na Parameter or Variable: EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > PH (measured); Units: pH; Observation Category: in situ; Sampling Instrument: na Parameter or Variable: EARTH SCIENCE > OCEANS > OCEAN OPTICS > FLUORESCENCE (measured); Units: fluorescence units; Observation Category: in situ; Sampling Instrument: na Parameter or Variable: sea_water_temperature (measured); Units: degrees Celsius; Observation Category: in situ; Sampling Instrument: na Parameter or Variable: DEPTH - BOTTOM (measured); Units: meter; Observation Category: in situ; Sampling Instrument: na Parameter or Variable: Ammonium concentration (measured); Units: uM; Observation Category: profile; Sampling Instrument: Auto analyzer Parameter or Variable: Methane concentration (measured); Units: uM; Observation Category: in situ; Sampling Instrument: METS sensor Parameter or Variable: Sediment chemistry (measured); Units: various; Observation Category: in situ; Sampling Instrument: Auto analyzer Parameter or Variable: Sediment pH (measured); Units: pH; Observation Category: in situ; Sampling Instrument: na Parameter or Variable: Porewater pH (measured); Units: pH; Observation Category: in situ; Sampling Instrument: na Parameter or Variable: NUTRIENTS (measured); Units: na; Observation Category: in situ; Sampling Instrument: na Parameter or Variable: Methane oxidation (measured); Units: um; Observation Category: in situ; Sampling Instrument: METS sensor Parameter or Variable: TEMPERATURE [WATER TEMPERATURE] (measured); Units: degrees Celsius; Observation Category: in situ; Sampling Instrument: METS Sensor Parameter or Variable: Laser Methane (measured); Units: uM; Observation Category: in situ; Sampling Instrument: METS Sensor asNeeded Metadata are developed, maintained and distributed by NCEI. Updates are performed as needed to maintain currentness. NOAA National Centers for Environmental Information custodian DSV Alvin Submersible. R/V Atlantis Flag: United States of America Vessel Type: Research Vessel (Oceanographic) DOB: Mar 1997 IMO: 9105798 AS OF 3/3/1997 - WHOI https://www.whoi.edu/what-we-do/explore/ships/ships-atlantis/