Metadata: Identification_Information: Citation: Citation_Information: Originator: Caitlin E. Reynolds Publication_Date: 20230911 Title: 2008-2017 Globigerinoides ruber Sediment Trap Data Collected from the Gulf of Mexico Edition: 2.0 Geospatial_Data_Presentation_Form: tabular digital data Larger_Work_Citation: Citation_Information: Originator: Julie N. Richey Originator: Kaustubh Thirumalai Originator: Deborah Khider Originator: Caitlin E. Reynolds Originator: Jud Partin Originator: Terrence M. Quinn Publication_Date: 20190211 Title: Globigerinoides ruber Sediment Trap Data in the Gulf of Mexico Series_Information: Series_Name: U.S. Geological Survey data release Issue_Identification: doi:10.5066/P9KK7UD6 Publication_Information: Publication_Place: St. Petersburg, Florida Publisher: U.S. Geological Survey - St. Petersburg Coastal and Marine Science Center Online_Linkage: https://doi.org/10.5066/P9KK7UD6 Description: Abstract: This data release includes results of a high-resolution (1–2 weeks) and long-term sediment trap time series collected from the northern Gulf of Mexico. This dataset allows for a detailed assessment of the seasonal distribution, size, morphological variability and geochemistry of co-occurring pink and white chromotypes of the shallow-water foraminifera, Globigerinoides ruber. The flux of both chromotypes is highly correlated, and both represent mean annual conditions in the marine surface mixed layer. Under modern climatic conditions in the Gulf of Mexico, USGS researchers found no significant offset in the Magnesium/Calcium (Mg/Ca) and delta Oxygen-18 (d18O) of co-occurring pink and white G. ruber (Richey and others, 2019). Furthermore, findings show the d18O and delta Carbon-13 (d13C) among the two morphotypes (sensu stricto and sensu lato) of both pink and white G. ruber to be indistinguishable. The test size distribution within the population varies seasonally, with the abundance of large individuals increasing (decreasing) in summer (winter). For further information regarding data collection and/or processing methods as well as the associated published manuscript refer to Richey and others (2019). Purpose: Using paired Mg/Ca and d18O, USGS scientists evaluated the performance of a suite of published equations for calculating sea surface temperature (SST), sea surface salinity (SSS) and isotopic composition of seawater (d18Osw). In addition, new linear relationships between salinity and d18Osw for the surface mixed layer and the entire water column are presented. Results are based on 17 sampling trips to the Gulf of Mexico from 2008 to 2017. Supplemental_Information: To ensure that USGS-St. Petersburg data management protocols were followed, each survey was assigned the following USGS FANs: 08CEV01–08CEV04, 09CEV01, 09CEV02, 10CEV01, 10CEV04, 11CEV01, 11CEV03, 12CEV01, 12CEV02, 13CEV01, 13CEV03, 2015-302-FA, 2015-334-FA, 2016-320-FA, 2017-302-FA, and 2017-349-FA. 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/. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20080107 Ending_Date: 20171210 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -90.3 East_Bounding_Coordinate: -90.3 North_Bounding_Coordinate: 27.5 South_Bounding_Coordinate: 27.5 Keywords: Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:22e65d32-89f0-448e-913d-f6b161456f74 Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: biota Theme_Keyword: geoscientificInformation Theme_Keyword: oceans Theme_Keyword: environment Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: geology Theme_Keyword: protists Theme_Keyword: micropaleontology Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: foraminifera Place: Place_Keyword_Thesaurus: Geographic Names Information System (GNIS) Place_Keyword: Gulf of Mexico Place_Keyword: Louisiana Access_Constraints: None. Please see 'Distribution Info' for details. 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. Data_Set_Credit: U.S. Geological Survey, Coastal and Marine Geology Program, St. Petersburg Coastal and Marine Science Center Native_Data_Set_Environment: Environment as of Metadata Creation: Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.3.1 (Build 4959) Service Pack N/A (Build N/A) Cross_Reference: Citation_Information: Originator: Richey JN Originator: Thirumalai T Originator: Reynolds CE Originator: Partin JW Originator: Quinn TM Publication_Date: 20190206 Title: Considerations for Globigerinoides ruber (white and pink) paleoceanography: comprehensive insights from a long‐running sediment trap Series_Information: Series_Name: Paleoceanography and Paleoclimatology Issue_Identification: Volume 34, Issue 3 Online_Linkage: https://doi.org/10.1029/2018PA003417 Cross_Reference: Citation_Information: Originator: Barker S Originator: Grieves M Originator: Elderfield H Publication_Date: 2003 Title: A study of cleaning procedures used for foraminiferal Mg/Ca paleothermometry Publication_Information: Publication_Place: Malden, Massachusetts Publisher: Geochemistry, Geophysics, Geosystems Online_Linkage: https://doi.org/10.1029/2003GC000559 Cross_Reference: Citation_Information: Originator: Russell AD Originator: Honisch B Originator: Spero HJ Originator: Lea DW Publication_Date: 2004 Title: Effects of seawater carbonate ion concentration and temperature on shell U, Mg, and Sr in cultured planktonic foraminifera Publication_Information: Publication_Place: Amsterdam, Netherlands Publisher: Geochimica et Cosmochimica Acta Online_Linkage: https://doi.org/10.1016/j.gca.2004.03.013 Cross_Reference: Citation_Information: Originator: Schrag DP Publication_Date: 1999 Title: Rapid analysis of high-precision Sr/Ca ratios in corals and other marine carbonates Publication_Information: Publication_Place: Malden, Massachusetts Publisher: Paleoceanographic Currents Online_Linkage: https://doi.org/10.1029/1998PA900025 Cross_Reference: Citation_Information: Originator: Reynolds CE Originator: Richey, JN Publication_Date: 20230731 Title: Gulf of Mexico sediment trap foraminifera data Series_Information: Series_Name: U.S. Geological Survey data release Issue_Identification: doi:10.5066/P9O76R8R Publication_Information: Publication_Place: St. Petersburg, FL Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.5066/P9O76R8R Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: No formal attribute accuracy tests were conducted. Logical_Consistency_Report: No formal logical accuracy tests were conducted. Completeness_Report: Dataset is considered complete for the information presented, as described in the abstract. Users are advised to read the rest of the metadata record carefully for additional details. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: A formal accuracy assessment of the horizontal positional information in the data set has not been conducted. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: A formal accuracy assessment of the vertical positional information in the dataset has either not been conducted or is not applicable. Lineage: Process_Step: Process_Description: From 2008 to 2017, USGS staff conducted 17 surveys within the Gulf of Mexico, onboard the research vessel (R/V) Pelican, to collect sediment trap and seawater samples that would allow researchers to 1) evaluate the performance of previously-published equations for calculating SST, SSS and isotopic composition, and 2) determine linear relationships between salinity and d18Osw for the water column and surface mixed layer. All data were processed between 2008 and 2018. For elemental analyses, 30–60 foraminifera from the 212–425 micrometer (um) size fraction were lightly crushed, homogenized, and cleaned according to a modified version of the Barker and others (2003) protocol. Briefly, the cleaning procedure included two Milli-Q water rinses, two methanol rinses, an oxidation step with a modified buffered hydrogen peroxide (H2O2) solution following Russell and others (2004) for recently living foraminifer (1:1 solution of 0.1 normal sodium hydroxide [N NaOH] and 30% H2O2), and a dilute acid leach (0.001 molar solution [M] nitric acid). A reductive cleaning step was not performed, as these foraminifers were not subject to diagenetic Iron-Manganese (Fe-Mn) oxide coatings often found on foraminifera from sediment cores. Cleaned foraminiferal samples collected from 2011–2013 were dissolved in nitric acid to achieve a target calcium concentration of 20 parts per million (ppm). Acidified samples were analyzed on a PerkinElmer 7300 DV inductively coupled plasma optical emission spectrometer (ICP-OES) at the USGS St. Petersburg Coastal and Marine Science Center, FL, USA. Mg/Ca was corrected for instrumental drift using the internal gravimetric standard (IGS) method devised by Schrag (1999). The average corrected IGS precision for Mg/Ca was 0.024 millimoles per mole (mmol/mol-1) (1σ, n = 1315). A calcium carbonate (CaCO3) standard (homogenized powder of ECRM-751) analyzed for Mg/Ca was used to test for any potential matrix effects, it had an average corrected precision of 0.096 mmol/mol-1 (1σ, n = 123). Researchers analyzed the JCt-1 standard used in an inter-laboratory comparison study of Mg/Ca and determined an average Mg/Ca was 1.228 ± 0.037 mmol/mol-1 (n = 10, 1σ). Samples from 2010 were cleaned according to the Barker and others (2003) procedure in a laminar flow clean bench and analyzed for Mg/Ca and Barium/Calcium (Ba/Ca), using inductively coupled plasma mass spectrometry (ICP-MS) at Texas A&M, College Station, Texas, USA on a Thermo Scientific Element XR High Resolution ICP-MS. Carbon and oxygen isotopic analyses were performed on aliquots of 6–8 whole foraminifera shells (212–425 um), on a Thermo-Finnigan MAT 253 isotope ratio mass spectrometer coupled to a Kiel IV Carbonate Device housed in the Analytical Laboratory for Paleoclimate Studies (ALPS) at the Jackson School of Geosciences, University of Texas at Austin, Austin, Texas, USA. The 1s precision of stable isotopic measurements in this study were based on multiple analyses of an in-house carbonate standard (n = 24) and equaled 0.03‰ for d13C and 0.06‰ for d18O, consistent with long-term precision for this instrumental set-up (0.06‰ for d13C and 0.08‰ for d18O). All stable isotope values are reported relative to Vienna Pee Dee Belemnite (VPDB). Seawater samples were collected from Niskin bottles during CTD casts on research cruises to deploy and recover the sediment trap. Seawater was sampled immediately following sediment collection and sealed in crimp top glass vials. The oxygen isotopic composition of seawater was measured on a Gasbench coupled to a MAT 253 isotope ratio mass spectrometer at the University of Texas at Austin, Austin, Texas, USA, where the long-term precision of replicate measurements of an in-house standard was 0.12 ‰ and 2 ‰ for d18O and d2H, respectively (2σ). Samples collected after 2010 were analyzed for both hydrogen (d2H) and oxygen (d18O) composition on a Picarro L2130-I Isotopic Liquid Water Analyzer (Picarro, Inc. Santa Clara, CA) at the University of Texas at Austin, Austin, Texas, USA. All isotopic values are given relative to Vienna Standard Mean Ocean Water (VSMOW). The long-term precision of replicate measurements of an in-house standard on the Picarro L2130-I was 0.13 ‰ and 0.59 ‰ for d18O and d2H, respectively. Process_Date: 2018 Process_Step: Process_Description: Level 5 revision: The G. ruber flux dataset (G_ruber_Flux.csv) were withdrawn from this data release in September 2023. The sediment trap foraminifera flux data were incorrectly calculated per 0.5 meter-squared area instead of 1 meter-squared in the original version. Corrected data has been provided in a new data release, https://doi.org/10.5066/P9O76R8R (Reynolds and Richey, 2023). Please refer to that data release and its associated metadata for more information. Process_Date: 20230911 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: Mixed_Layer_d18Osw-salinity.csv Entity_Type_Definition: Comma Separated Values (CSV) file containing delta Oxygen-18 (d18O) and salinity attribute information for the surface mixed layer samples collected from the northern Gulf of Mexico between 2008 and 2017. Entity_Type_Definition_Source: USGS Attribute: Attribute_Label: Cruise Attribute_Definition: Gulf of Mexico sediment trap cruise number. Each cruise is assigned a number 1-20. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: GMT 1 Range_Domain_Maximum: GMT 20 Attribute: Attribute_Label: Water Depth (m) Attribute_Definition: Measured depth of water, in meters (m), from the surface down to the seafloor. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 109 Attribute: Attribute_Label: Date Attribute_Definition: Date, in M/D/YY format, when samples were collected. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1/7/08 Range_Domain_Maximum: 12/10/17 Attribute: Attribute_Label: Salinity (psu) Attribute_Definition: Salinity, measured in practical salinity units (PSU). Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 34.42 Range_Domain_Maximum: 36.54 Attribute: Attribute_Label: d18Osw Attribute_Definition: Calculated d18O of seawater. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.74 Range_Domain_Maximum: 1.48 Attribute: Attribute_Label: 1s d18Osw Attribute_Definition: 1 sigma of calculated d18O of seawater. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.01 Range_Domain_Maximum: 0.10 Detailed_Description: Entity_Type: Entity_Type_Label: Entire_Water_Column_d18Osw-salinity.csv Entity_Type_Definition: CSV file containing delta Oxygen-18 (d18O) and salinity attribute information associated with the entire water column. Entity_Type_Definition_Source: USGS Attribute: Attribute_Label: Cruise Attribute_Definition: Gulf of Mexico sediment trap cruise number. Each cruise is assigned a number 1-20. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: GMT 1 Range_Domain_Maximum: GMT 20 Attribute: Attribute_Label: Water Depth (m) Attribute_Definition: Measured depth of water (m). Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 1142 Attribute: Attribute_Label: Date Attribute_Definition: Date sample collected in M/D/YY Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1/7/08 Range_Domain_Maximum: 12/10/17 Attribute: Attribute_Label: Salinity (psu) Attribute_Definition: Salinity, measured in psu. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 34.42 Range_Domain_Maximum: 36.76 Attribute: Attribute_Label: d18Osw Attribute_Definition: Calculated d18O of seawater. nan represents no data collected. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.09 Range_Domain_Maximum: 1.48 Attribute: Attribute_Label: 1s d18Osw Attribute_Definition: 1 sigma of calculated d18O of seawater. nan represents no data collected. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 0.26 Detailed_Description: Entity_Type: Entity_Type_Label: Down_Core_G_ruber_geochem.csv Entity_Type_Definition: Table containing Globigerinoides ruber geochemistry (delta Oxygen-18 and delta Carbon-13) attribute information from sediment trap samples collected within the Gulf of Mexico. Note that multicores were collected and analyzed in October 2013 prior to this data release, associated FAN is 13CEV03. Entity_Type_Definition_Source: USGS Attribute: Attribute_Label: Foraminifer Attribute_Definition: Co-occurring chromotypes of the shallow-water foraminifera, Globigerinoides ruber where collected and assessed from sediment data acquired during various surveys. G. ruber pink or G. ruber white were used in each analysis. Attribute_Definition_Source: USGS Attribute_Domain_Values: Unrepresentable_Domain: Refers to the specific type of foraminifer used. Attribute: Attribute_Label: Depth (cm) Attribute_Definition: Depth, in centimeters (cm), of core sampled, from October 2014, associated FAN is 13CEV03. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.25 Range_Domain_Maximum: 4.75 Attribute: Attribute_Label: Year Attribute_Definition: Year sediment sample was deposited based on radio carbon dating of the G. ruber shell. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1942 Range_Domain_Maximum: 2011 Attribute: Attribute_Label: Number of Samples Attribute_Definition: Number of samples used for analysis Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 4 Attribute: Attribute_Label: Mean Mg/Ca Attribute_Definition: Mean of measured Mg/Ca in mmol/mol Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 3.56 Range_Domain_Maximum: 5.01 Attribute: Attribute_Label: 1s Mg/Ca Attribute_Definition: 1 sigma of measured Mg/Ca in mmol/mol. nan represents no data collected. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 0.36 Attribute: Attribute_Label: Mean d13Cc Attribute_Definition: Mean measured d13C of carbonate Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.34 Range_Domain_Maximum: 1.42 Attribute: Attribute_Label: 1s d13Cc Attribute_Definition: 1 sigma of measured d13C of carbonate. nan represents no data collected. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.01 Range_Domain_Maximum: 0.57 Attribute: Attribute_Label: Mean d18Oc Attribute_Definition: Mean measured d18O of carbonate Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -1.67 Range_Domain_Maximum: -0.96 Attribute: Attribute_Label: 1s d18Oc Attribute_Definition: 1 sigma of measured d18O of carbonate. nan represents no data collected. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.01 Range_Domain_Maximum: 0.47 Detailed_Description: Entity_Type: Entity_Type_Label: G_ruber_MgCa.csv Entity_Type_Definition: Calculated Mg/Ca (mmol/mol) for each associated foraminifer. Entity_Type_Definition_Source: USGS Attribute: Attribute_Label: Foraminifer Attribute_Definition: Refers to G. ruber white or G. ruber pink foraminerifa specimens used for analysis. Attribute_Definition_Source: USGS Attribute_Domain_Values: Unrepresentable_Domain: Refers to the specific type of foraminifer used. Attribute: Attribute_Label: Trap Date Attribute_Definition: Mid-week date the sediment trap samples were collected in M/D/YY format. nan represents no data were collected. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 3/17/10 Range_Domain_Maximum: 1/8/13 Attribute: Attribute_Label: Days Attribute_Definition: Total number of days the sediment trap was open and collecting samples. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 7 Range_Domain_Maximum: 77 Attribute: Attribute_Label: Schrag Mg/Ca (mMol/Mol) Attribute_Definition: Measured Mg/Ca (mmol/mol) Schrag corrected. nan represents no data collected. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 3.15 Range_Domain_Maximum: 6.73 Detailed_Description: Entity_Type: Entity_Type_Label: G_ruber_Isotopes.csv Entity_Type_Definition: Isotopic measurements of d13C and d18O for each individual foraminifer from the Gulf of Mexico sediment trap. Entity_Type_Definition_Source: USGS Attribute: Attribute_Label: Foraminifer Attribute_Definition: Indicates if G. ruber pink or G. ruber white was used in analysis. Attribute_Definition_Source: USGS Attribute_Domain_Values: Unrepresentable_Domain: Refers to the specific type of foraminifer used. Attribute: Attribute_Label: Date Attribute_Definition: The mid-week collection date when sediment trap samples were collected. nan represents no data collected. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1/31/10 Range_Domain_Maximum: 11/24/12 Attribute: Attribute_Label: # Days Attribute_Definition: Total number of days the sediment trap was opened and collecting samples. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 7 Range_Domain_Maximum: 78 Attribute: Attribute_Label: d13C PDB Attribute_Definition: Measured d13C of the samples. PDB represents Pee Dee Belemnite. nan represents no data collected. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.73 Range_Domain_Maximum: 1.04 Attribute: Attribute_Label: d18O PDB Attribute_Definition: Measured d18O of the samples. PDB represents Pee Dee Belemnite. nan represents no data collected. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -3.03 Range_Domain_Maximum: -0.24 Detailed_Description: Entity_Type: Entity_Type_Label: CTD_Data.csv Entity_Type_Definition: CTD data collected at the Gulf of Mexico sediment trap site, temperature (°C), salinity (psu), and oxygen (mg/l) with depth. Entity_Type_Definition_Source: USGS Attribute: Attribute_Label: Date Attribute_Definition: Date of CTD collection on M/D/YY Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1/7/08 Range_Domain_Maximum: 6/2/14 Attribute: Attribute_Label: Depth (m) Attribute_Definition: Depth of CTD from the surface to the seafloor, in meters (m) Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 1156.8 Attribute: Attribute_Label: Temperature (°C) Attribute_Definition: Temperature, in degrees Celsius, collected along with depth on the CTD probe. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 4.33 Range_Domain_Maximum: 31.20 Attribute: Attribute_Label: Salinity (psu) Attribute_Definition: Salinity collected with depth on the CTD Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 31.25 Range_Domain_Maximum: 36.81 Attribute: Attribute_Label: Oxygen (mg/l) Attribute_Definition: Oxygen collected with depth on the CTD Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 2.87 Range_Domain_Maximum: 10.26 Detailed_Description: Entity_Type: Entity_Type_Label: Carbonate_Chem.csv Entity_Type_Definition: Measured carbonate chemistry of the dataset including salinity (psu), temperature (°C), TCO2 (umol/kg) and TA (mol/kg). Entity_Type_Definition_Source: USGS Attribute: Attribute_Label: Cruise Attribute_Definition: Sediment trap cruise number. GMT refers to Gulf of Mexico sediment trap. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 13 Range_Domain_Maximum: 20 Attribute: Attribute_Label: Depth (m) Attribute_Definition: Depth of data collected from the water surface down to the seafloor, in meters (m). Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 50 Attribute: Attribute_Label: Date Attribute_Definition: Date of samples collected in M/D/YY Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 2/6/13 Range_Domain_Maximum: 12/10/17 Attribute: Attribute_Label: Salinity (psu) Attribute_Definition: Measured salinity of sample. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 35.98 Range_Domain_Maximum: 36.54 Attribute: Attribute_Label: Temp (°C) Attribute_Definition: Measured temperature (°C) of sample. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 21.78 Range_Domain_Maximum: 27.37 Attribute: Attribute_Label: TCO2 (umol/kg) Attribute_Definition: Measured TCO2 of sample (total carbon dioxide), collected in micromoles per kilogram. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 2030.4 Range_Domain_Maximum: 2102.7 Attribute: Attribute_Label: TA (mol/kg seawater) Attribute_Definition: Measured TA of sample (total alkalinity), collected in micromoles per kilogram of seawater. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 2381.4 Range_Domain_Maximum: 2413.7 Overview_Description: Entity_and_Attribute_Overview: The entity and attribute information provided here describes the tabular data associated with the dataset. Please review the detailed descriptions that are provided (the individual attribute descriptions) for information on the values that appear as fields/table entries of the dataset. Entity_and_Attribute_Detail_Citation: The entity and attribute information was 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: Caitlin Reynolds 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) 502-8046 Contact_Electronic_Mail_Address: creynolds@usgs.gov Resource_Description: CTD_data.csv; Down_Core_G_ruber_geochem.csv; Entire_Water_Column_d18O-salinity.csv; G_ruber_Isotopes.csv; G_ruber_MgCa.csv; Mixed_Layer_d18Osw-salinity.csv; Carbonate_Chem.csv Distribution_Liability: Distributor assumes no liability for misuse of data. This publication was prepared by an agency of the United States Government. Although these data have been processed successfully on a computer system at the U.S. Geological Survey, no warranty expressed or implied is made regarding the display or utility of the data on any other system, or for general or scientific purposes, nor shall the act of distribution imply any such warranty. The U.S. Geological Survey shall not be held liable for improper or incorrect use of the data described and (or) contained herein. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. 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-P9KK7UD6/data/Carbonate_Chem.zip Network_Resource_Name: https://coastal.er.usgs.gov/data-release/doi-P9KK7UD6/data/Down_Core_G_ruber_geochem.zip Network_Resource_Name: https://coastal.er.usgs.gov/data-release/doi-P9KK7UD6/data/G_ruber_Isotopes.zip Network_Resource_Name: https://coastal.er.usgs.gov/data-release/doi-P9KK7UD6/data/CTD_data.zip Network_Resource_Name: https://coastal.er.usgs.gov/data-release/doi-P9KK7UD6/data/G_ruber_MgCa.zip Network_Resource_Name: https://coastal.er.usgs.gov/data-release/doi-P9KK7UD6/data/Entire_Water_Column_d18O-salinity.zip Network_Resource_Name: https://coastal.er.usgs.gov/data-release/doi-P9KK7UD6/data/Mixed_Layer_d18Osw-salinity.zip Fees: None. No fees are applicable for obtaining the dataset. Metadata_Reference_Information: Metadata_Date: 20230911 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Caitlin E. Reynolds 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: 727-502-8046 Contact_Electronic_Mail_Address: creynolds@usgs.gov Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998