Metadata: Identification_Information: Citation: Citation_Information: Originator: Nancy G. Prouty Originator: Miranda C. Baker Publication_Date: 2021 Title: Water-column environmental variables and accompanying discrete CTD measurements collected offshore the U.S. Mid- and South Atlantic (ver. 2.0, July 2022) Edition: version 2.0 Geospatial_Data_Presentation_Form: comma-delimited text Series_Information: Series_Name: data release Issue_Identification: DOI: 10.5066/P9K2GOAL Publication_Information: Publication_Place: Pacific Coastal and Marine Science Center, Santa Cruz, California Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.5066/P9K2GOAL Online_Linkage: https://www.sciencebase.gov/catalog/item/6281d019d34e3bef0c9a3b12 Description: Abstract: Various water column variables, including salinity, dissolved inorganic nutrients, dissolved inorganic carbon, and radio-carbon isotopes were measured in samples collected using a Niskin-bottle rosette at selected depths from deepwater sites offshore the US Mid- and South Atlantic from September 2017 to April 2019. CTD (Conductivity Temperature Depth) data were also collected at each depth that a Niskin-bottle sample was collected and are presented along with the water sample data during the following five cruises: PC1704 (USGS field activity 2017-004-FA) in September 2017, ENG615 (USGS field activity 2018-024-FA) in June 2018, AT41 (USGS field activity 2018-042-FA) in August 2018, BMCC-2018 (USGS field activity 2018-053-FA) in October 2018, and RB1903 (USGS field activity 2019-620-FA) in April 2019. This data release supersedes version 1.0, published in March 2021 at https://doi.org/10.5066/P9V7ODDR. Versioning details are documented in the accompanying VersionHistory_P9K2GOAL.txt file. Purpose: These samples were collected as part of the Deep Sea Exploration to Advance Research on Coral/Canyon/Cold seep Habitats (DEEP SEARCH) study, a multiyear, multi-agency campaign to characterize the deep-sea ecosystems to better understand the distribution of sensitive seafloor communities to inform potential offshore energy development and other deep-sea management. Supplemental_Information: Additional information about the USGS field activities from which these data were derived is available online at: http://cmgds.marine.usgs.gov/fan_info.php?fan=2017-004-FA http://cmgds.marine.usgs.gov/fan_info.php?fan=2018-024-FA http://cmgds.marine.usgs.gov/fan_info.php?fan=2018-042-FA http://cmgds.marine.usgs.gov/fan_info.php?fan=2018-053-FA http://cmgds.marine.usgs.gov/fan_info.php?fan=2019-620-FA Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20170901 Ending_Date: 20190418 Currentness_Reference: Ground condition at time data were collected. Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -83.9978 East_Bounding_Coordinate: -74.5177 North_Bounding_Coordinate: 37.2404 South_Bounding_Coordinate: 29.2495 Keywords: Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: oceans Theme_Keyword: environment Theme_Keyword: geoscientificInformation Theme: Theme_Keyword_Thesaurus: Data Categories for Marine Planning Theme_Keyword: Water Column Features Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: ocean salinity Theme_Keyword: CTD measurement Theme_Keyword: marine chemistry Theme_Keyword: ocean temperature Theme_Keyword: marine water quality Theme: Theme_Keyword_Thesaurus: Marine Realms Information Bank (MRIB) keywords Theme_Keyword: physical oceanography Theme_Keyword: chemical oceanography Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: U.S. Geological Survey Theme_Keyword: USGS Theme_Keyword: Coastal and Marine Hazards and Resources Program Theme_Keyword: CMHRP Theme_Keyword: Pacific Coastal and Marine Science Center Theme_Keyword: PCMSC Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:6281d019d34e3bef0c9a3b12 Place: Place_Keyword_Thesaurus: Geographic Names Information System (GNIS) Place_Keyword: Atlantic Ocean Place_Keyword: South Atlantic Bight Access_Constraints: None Use_Constraints: USGS-authored or produced data and information are in the public domain from the U.S. Government and are freely redistributable with proper metadata and source attribution. Please recognize and acknowledge the U.S. Geological Survey, Bureau of Ocean Energy Management (BOEM), and the National Oceanic and Atmospheric Administration (NOAA) as the originators of the dataset and in products derived from these data. Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey, Pacific Coastal and Marine Science Center Contact_Person: PCMSC Science Data Coordinator Contact_Address: Address_Type: mailing and physical Address: 2885 Mission Street City: Santa Cruz State_or_Province: CA Postal_Code: 95060 Contact_Voice_Telephone: 831-427-4747 Contact_Electronic_Mail_Address: pcmsc_data@usgs.gov Data_Set_Credit: Ken Marchus (University of California, Santa Barbara), John Schiff and Chris Maupin (Texas A&M), Natasha Vokhshoori (University of California, Santa Cruz) Native_Data_Set_Environment: Mac OSX 10.11.6, Microsoft Excel 14.7.1 for Mac. Raw data from the Sea-Bird SBE 9 CTD were processed using the manufacturers software, Seasave V 7.23.2. Temperature, conductivity, pressure, sbeox0, sbeox0PS, turbidity, fluorescence, altimeter, and salinity were parsed using the closest depth measurement from the CTD datafiles. Cross_Reference: Citation_Information: Originator: M. Stuiver Originator: H.A. Polach Publication_Date: 1977 Title: Discussion reporting of 14C data Other_Citation_Details: Stuiver, M., and Polach, H.A., 1977, Discussion reporting of 14C data: Radiocarbon, v. 19, pp. 355-363. Online_Linkage: https://doi.org/10.1017/S0033822200003672 Cross_Reference: Citation_Information: Originator: D.M. Sigman Originator: K.L. Casciotti Originator: M. Andreani Originator: C. Barford Originator: M. Galanter Originator: J.K. Bohlke Publication_Date: 2001 Title: A bacterial method for the nitrogen isotopic analysis of nitrate in seawater and freshwater Other_Citation_Details: Sigman, D.M., Casciotti, K.L., Andreani, M., Barford, C., Galanter, M., Bohlke, J.K., 2001, A bacterial method for the nitrogen isotopic analysis of nitrate in seawater and freshwater: Analytical Chemistry, v. 73, 4145-4153. Online_Linkage: https://doi.org/10.1021/ac010088e Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: All geochemistry data were calibrated against known standards. The CTD was calibrated according to the Sea-Bird user manual. 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 metadata for each part of this data release carefully for additional details. Dataset is considered complete for the information presented, as described in the abstract. Users are advised to read the metadata for each part of this data release 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. The horizontal accuracy was determined with the ships‚Äô GPS navigation, with a stated accuracy of less than 5 m. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: A formal accuracy assessment of the vertical positional information in the data set has not been conducted. Depth was determined using a SeaBird SBE-4 CTD digiquartz pressure sensor with a stated accuracy of 0.015 percent. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: University of California at Santa Barbara, Marine Science Institute Publication_Date: 2019 Title: Seawater nutrient analyses Online_Linkage: http://msi.ucsb.edu/services/analytical-lab/seawater-nutrients-fia Type_of_Source_Media: seawater lab samples Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 20191113 Source_Currentness_Reference: Date when lab analyses were completed Source_Citation_Abbreviation: nutrients Source_Contribution: Flow injection analysis for dissolved nutrient (nitrate+nitrite, ammonium, phosphate, and silicate) concentrations. Source_Information: Source_Citation: Citation_Information: Originator: University of California, Davis Stable Isotope Facility Publication_Date: 2020 Title: nitrate stable nitrogen isotope analysis Type_of_Source_Media: seawater lab samples Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 20200913 Source_Currentness_Reference: Date when lab analyses were completed Source_Citation_Abbreviation: Nitrate delta-N-15 and delta-0-18 Source_Contribution: The denitrifier method of Sigman and others (2001) was used, and isotope values were measured using a Thermo Finnigan MAT 252 coupled with a GasBench II interface. Isotope values are presented in per mil with respect to AIR for delta-N-15 and VSMO for delta-O-18. Source_Information: Source_Citation: Citation_Information: Originator: National Ocean Sciences Accelerator Mass Spectrometry (NOSAMS) facility Publication_Date: 2019 Title: Seawater radiocarbon analysis Online_Linkage: https://www.whoi.edu/nosams/Submitting_Guidelines Type_of_Source_Media: seawater lab samples Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 20190916 Source_Currentness_Reference: Date when lab analyses were completed Source_Citation_Abbreviation: radiocarbon Source_Contribution: An accelerator mass spectrometer (AMS) was used to measure inorganic radiocarbon Source_Information: Source_Citation: Citation_Information: Originator: Texas A&M University at College Station Stable Isotope Geosciences Facility Publication_Date: 2020 Title: Seawater isotope analysis Online_Linkage: https://stableisotope.tamu.edu/about/index.html Type_of_Source_Media: seawater lab samples Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 20200722 Source_Currentness_Reference: Date when lab analyses were completed Source_Citation_Abbreviation: Oxygen (delta-O-18) and Hydrogen (delta-D) analysis of water Source_Contribution: A Picarro Isotopic Water Analyzer was used to measure stable isotopes of oxygen and hydrogen in water. Process_Step: Process_Description: Water samples were collected using a Niskin bottle rosette apparatus at different depths throughout the water column. Simultaneous conductivity, salinity, and depth (CTD) data were collected with a SeaBird SBE-9 CTD profiler at each Niskin bottle sample depth. The CTD data were collected with a SeaBird SBE-9 CTD Profile. Data collected when instruments were out of the water were removed during post-processing. Data from depths at which Niskin bottles were tripped was copied from individual cruise datafiles into a collated datafile. Conductivity measurements from ENG615 cruise were converted from siemens per meter to millisiemens per centimeter. Oxygen concentrations from ENG615 were converted from millimolar per liter to milligram per liter using the molar mass of oxygen gas. Oxygen concentrations from the AT41 and RB1903 cruises were converted from micromolar per kilogram to milligram per liter using the molar mass of oxygen gas and the density of seawater measured by the CTD. PC1704 pressure values were converted from pressure square inch to decibars. Process_Date: 2020 Process_Step: Process_Description: Seawater samples were analyzed by several different labs (see Sources) for different variables. Data from all seawater lab analyses were combined into a single document. Empty cells are designated by -9999 indicating no analysis was performed. Source_Used_Citation_Abbreviation: nutrients Source_Used_Citation_Abbreviation: radiocarbon Source_Used_Citation_Abbreviation: Nitrate delta-N-15 and delta-0-18 Source_Used_Citation_Abbreviation: Oxygen (delta-O-18) and Hydrogen (delta-D) Process_Date: 2020 Source_Produced_Citation_Abbreviation: lab data Process_Step: Process_Description: CTD data and water column variables were combined based on depths into a single document (DEEPSEARCH_CTD_BTLDATA_v2.0.csv). Source_Used_Citation_Abbreviation: lab data Source_Used_Citation_Abbreviation: CTD data Process_Date: 2020 Process_Step: Process_Description: Correction was made to version 1.0 data to correct the attribute column header from “Ammonia” to “Ammonium.” No data values were changed. Versioning details are documented in the accompanying VersionHistory_P9K2GOAL.txt file. Process_Date: 202206 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Point Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Point Point_and_Vector_Object_Count: 207 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geographic: Latitude_Resolution: 0.0001 Longitude_Resolution: 0.0001 Geographic_Coordinate_Units: Decimal degrees Geodetic_Model: Horizontal_Datum_Name: D_WGS_1984 Ellipsoid_Name: D_WGS_1984 Semi-major_Axis: 6378137.000000 Denominator_of_Flattening_Ratio: 298.257224 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: A comma-delimited text file with the first line being a header line. Entity_Type_Definition: Comma separated values containing data points from CTD water column profiles with cruise, ship, site, station, cast, Niskin bottle, sample ID, date of collection, bottle depth (m), latitude, longitude, temperature, conductivity, pressure, oxygen, turbidity, fluorescence, altimeter, salinity, and ctd depth, and output from seawater geochemistry lab analysis from seawater sampling from individual Niskin bottles. Entity_Type_Definition_Source: Producer defined. Attribute: Attribute_Label: Cruise Attribute_Definition: Name of cruise on which samples and measurements were collected. The name of the cruise may contain a ship abbreviation and year (BCMM-2018=Brooks McCall and [year]; PC-1704=R/V Pisces and [20XX year, month]; Ron Brown=RB1903 and [20XX year, month], AT41=R/V Atlantis and sequential cruise number), and ENG615 ADEON=R/V Endeavor, cruise EN615 for the Atlantic Deepwater Ecosystem Observatory Network [ADEON]). Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Unrepresentable_Domain: List of cruise names Attribute: Attribute_Label: Ship Attribute_Definition: Name of ship on which samples and measurements were collected. Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Unrepresentable_Domain: List of ship names Attribute: Attribute_Label: Site Attribute_Definition: Name of site for which samples and measurements were collected. Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Unrepresentable_Domain: List of site names Attribute: Attribute_Label: CTD Station Attribute_Definition: Name of CTD stations based on ship name (BCMM=Brooks McCall; PC=R/V Pisces; AT=R/V Atlantis) and/or CTD sequence (e.g., CTD12) where samples and measurements were collected. Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Unrepresentable_Domain: List of CTD stations. Attribute: Attribute_Label: CTD number Attribute_Definition: Number of CTD cast Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 13 Attribute_Units_of_Measure: unitless Attribute_Measurement_Resolution: 1 Attribute: Attribute_Label: Niskin bottle number Attribute_Definition: Number of Niskin bottle number Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 24 Attribute_Units_of_Measure: unitless Attribute_Measurement_Resolution: 1 Attribute: Attribute_Label: Sample ID Attribute_Definition: Sample ID based on ship abbreviation (BCMM=Brooks McCall; PC=R/V Pisces; AT=R/V Atlantis) and CTD number of cast where samples were collected, niskin bottle number (e.g., N3) or water sample number (e.g., W049); or site abbreviation (BLE=Blake Escarpment; JAX=Jacksonville; CHMB=Charleston Bump; SAV=Savannah; WIL=Wilmington; VAC=Virginia Inter-Canyon), and sequential sample number. Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Unrepresentable_Domain: List of sampled IDs names Attribute: Attribute_Label: Date of collection Attribute_Definition: Date [MM/DD/YY] Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 9/1/17 Range_Domain_Maximum: 4/18/19 Attribute: Attribute_Label: Latitude Attribute_Definition: Latitude of sample location Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 29.2495 Range_Domain_Maximum: 37.2404 Attribute_Units_of_Measure: decimal degrees Attribute_Measurement_Resolution: 0.0001 Attribute: Attribute_Label: Longitude Attribute_Definition: Longitude of sample location Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -83.9978 Range_Domain_Maximum: -74.5177 Attribute_Units_of_Measure: decimal degrees Attribute_Measurement_Resolution: 0.0001 Attribute: Attribute_Label: Depth Attribute_Definition: Water depth of deep-sea coral collection Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 2267 Attribute_Units_of_Measure: meters Attribute_Measurement_Resolution: 1 Attribute: Attribute_Label: Temperature Attribute_Definition: Temperature [ITS-90, deg C]. Values of -9999 indicate the parameter was not measured. Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -1.3468 Range_Domain_Maximum: 30.0084 Attribute_Units_of_Measure: degrees Celsius Attribute_Measurement_Resolution: 0.0001 Attribute: Attribute_Label: Conductivity Attribute_Definition: Conductivity (mS/cm). Values of -9999 indicate the parameter was not measured. Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 32.83334 Range_Domain_Maximum: 60.24224 Attribute_Units_of_Measure: millisiemens per centimeter Attribute_Measurement_Resolution: 0.00001 Attribute: Attribute_Label: Pressure Attribute_Definition: Pressure (decibars). Values of -9999 indicate the parameter was not measured. Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 5.034 Range_Domain_Maximum: 1390.201 Attribute_Units_of_Measure: decibars Attribute_Measurement_Resolution: 0.001 Attribute: Attribute_Label: Sbeox0 Attribute_Definition: Oxygen, SBE 43 (mg/l). Values of -9999 indicate the parameter was not measured. Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 3.7014 Range_Domain_Maximum: 21.7075 Attribute_Units_of_Measure: milligrams per liter Attribute_Measurement_Resolution: 0.0001 Attribute: Attribute_Label: Turbidity Attribute_Definition: Turbidity, WET Labs ECO [NTU]. Values of -9999 indicate the parameter was not measured. Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.0041 Range_Domain_Maximum: 29.5419 Attribute_Units_of_Measure: Nephelometricy Turbidity Units Attribute_Measurement_Resolution: 0.0001 Attribute: Attribute_Label: Fluorescence Attribute_Definition: Fluorescence, WET Labs ECO-AFL/FL [mg/m^3]. Values of -9999 indicate the parameter was not measured. Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.0006 Range_Domain_Maximum: 10.3949 Attribute_Units_of_Measure: miligrams per cubic meter Attribute_Measurement_Resolution: 0.0001 Attribute: Attribute_Label: AltM Attribute_Definition: Altimeter [m] Attribute_Definition_Source: producer defined. Values of -9999 indicate the parameter was not measured. Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.04 Range_Domain_Maximum: 1480.89 Attribute_Units_of_Measure: meters Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Salinity Attribute_Definition: Salinity, Practical [PSU]. Values of -9999 indicate the parameter was not measured. Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 31.7899 Range_Domain_Maximum: 36.9497 Attribute_Units_of_Measure: practical salinity units (PSU) Attribute_Measurement_Resolution: 0.0001 Attribute: Attribute_Label: DepSM Attribute_Definition: Depth [salt water, m]. Values of -9999 indicate the parameter was not measured. Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 2.014 Range_Domain_Maximum: 2193.720 Attribute_Units_of_Measure: meters Attribute_Measurement_Resolution: 0.001 Attribute: Attribute_Label: Phosphate Attribute_Definition: Dissolved inorganic phosphate concentration. Values of -9999 indicate the parameter was not measured. Attribute_Definition_Source: standard reporting value in inorganic chemistry Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.00 Range_Domain_Maximum: 3.11 Attribute_Units_of_Measure: micromole per liter of seawater Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Silicate Attribute_Definition: Dissolved inorganic silicate concentration. Attribute_Definition_Source: standard reporting value in inorganic chemistry Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.12 Range_Domain_Maximum: 19.05 Attribute_Units_of_Measure: micromole per liter of seawater Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Nitrate+Nitrite Attribute_Definition: Dissolved inorganic nitrate and nitrite concentration. Attribute_Definition_Source: standard reporting value in inorganic chemistry Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.00 Range_Domain_Maximum: 29.97 Attribute_Units_of_Measure: micromole per liter of seawater Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: ammonium Attribute_Definition: Dissolved inorganic ammonium concentration. Values of -9999 indicate the parameter was not measured. Attribute_Definition_Source: standard reporting value in inorganic chemistry. Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.00 Range_Domain_Maximum: 1.23 Attribute_Units_of_Measure: micromole per liter of seawater Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Nitrate delta-N-15 Attribute_Definition: delta-N-15 is a measure of the ratio of stable isotopes Nitrogen-15:Nitrogen-14 in nitrate, reported in parts per thousand (per mil). Values of -9999 indicate the parameter was not measured. Attribute_Definition_Source: standard reporting value in isotope chemistry Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1.86 Range_Domain_Maximum: 12.87 Attribute_Units_of_Measure: parts per thousand (per mil) Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Nitrate delta-O-18 Attribute_Definition: delta-O-18 is a measure of the ratio of stable isotopes Oxygen-18:Oxygen-16 in nitrate, reported in parts per thousand (per mil). Values of -9999 indicate the parameter was not measured. Attribute_Definition_Source: standard reporting value in isotope chemistry Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1.51 Range_Domain_Maximum: 2.52 Attribute_Units_of_Measure: parts per thousand (per mil) Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Water delta-O-18 Attribute_Definition: delta-O-18 is a measure of the ratio of stable isotopes Oxygen-18:Oxygen-16 in water, reported in parts per thousand (per mil). Values of -9999 indicate the parameter was not measured. Attribute_Definition_Source: standard reporting value in isotope chemistry Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.75 Range_Domain_Maximum: 1.16 Attribute_Units_of_Measure: parts per thousand (per mil) Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: water delta-D Attribute_Definition: delta-D is a measure of the ratio of stable isotopes Hydrogen (deuterium)-2:Hydrogen-1 in water, reported in parts per thousand (per mil). Values of -9999 indicate the parameter was not measured. Attribute_Definition_Source: standard reporting value in isotope chemistry Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -6.86 Range_Domain_Maximum: 8.39 Attribute_Units_of_Measure: parts per thousand (per mil) Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Fraction Modern Attribute_Definition: Fraction modern is a measurement of the deviation of the delta-Carbon-14/delta-Carbon-12 ratio of a sample from modern carbon (Stuiver and Polach, 1977). Values of -9999 indicate the parameter was not measured. Attribute_Definition_Source: defined in Stuiver and Polach (1977) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.9647 Range_Domain_Maximum: 1.0718 Attribute_Units_of_Measure: unitless Attribute_Measurement_Resolution: 0.0001 Attribute: Attribute_Label: Fraction Modern (error) Attribute_Definition: Fraction modern (error) is a measurement of the deviation of the delta-Carbon-14/delta-Carbon-12 ratio of a sample from modern carbon (Stuiver and Polach, 1977). Values of -9999 indicate the parameter was not measured. Attribute_Definition_Source: defined in Stuiver and Polach (1977) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.0019 Range_Domain_Maximum: 0.0031 Attribute_Units_of_Measure: unitless Attribute_Measurement_Resolution: 0.0001 Attribute: Attribute_Label: Conventional Radiocarbon Age Attribute_Definition: Conventional Radiocarbon Age calculated using the radiocarbon decay equation (Stuiver and Polach, 1977). >Modern indicates a FM>1 with sample age after 1950 (Stuiver and Polach, 1977). Values of -9999 indicate the parameter was not measured. Attribute_Definition_Source: defined in Stuiver and Polach (1977) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 35 Range_Domain_Maximum: 290 Attribute_Units_of_Measure: years Attribute_Measurement_Resolution: 5 Attribute: Attribute_Label: Conventional Radiocarbon Age (error) Attribute_Definition: Standard error for Conventional Radiocarbon Age. Values of -9999 indicate the parameter was not measured. Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 15 Range_Domain_Maximum: 20 Attribute_Units_of_Measure: years Attribute_Measurement_Resolution: 1 Attribute: Attribute_Label: delta-C-13 Attribute_Definition: delta-C-13 is a measure of the ratio of stable isotopes Carbon-13:Carbon-12, reported in parts per thousand (per mil). Values of -9999 indicate the parameter was not measured. Attribute_Definition_Source: standard reporting value in isotope chemistry Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.40 Range_Domain_Maximum: 0.99 Attribute_Units_of_Measure: parts per thousand (per mil) Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Delta-C-14 Attribute_Definition: The relative difference between the absolute international standard (base year 1950) and sample activity corrected for age and delta-Carbon-13. Values of -9999 indicate the parameter was not measured. Attribute_Definition_Source: defined in Stuiver and Polach (1977) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -43.20 Range_Domain_Maximum: 63.01 Attribute_Units_of_Measure: parts per thousand (per mil) Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Dissolved Inorganic Carbon Attribute_Definition: The sum of inorganic carbon species in a solution (carbon dioxide, carbonic acid, bicarbonate anion, and carbonate. Values of -9999 indicate the parameter was not measured. Attribute_Definition_Source: standard reporting value in inorganic chemistry Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1.70 Range_Domain_Maximum: 2.15 Attribute_Units_of_Measure: millimole per kilogram Attribute_Measurement_Resolution: 0.01 Overview_Description: Entity_and_Attribute_Overview: The first line of the comma-delimited text file is a header line. Entity_and_Attribute_Detail_Citation: U.S. Geological Survey Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey - ScienceBase Contact_Address: Address_Type: mailing and physical Address: Denver Federal Center, Building 810, Mail Stop 302 City: Denver State_or_Province: CO Postal_Code: 80225 Contact_Voice_Telephone: 1-888-275-8747 Contact_Electronic_Mail_Address: sciencebase@usgs.gov Resource_Description: These data are available in a .csv file (DEEPSEARCH_CTD_BTLDATA_v2.0.csv) which contains seawater chemical analysis and CTD data for all collected water samples. 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 on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: comma-delimited text Format_Version_Number: 14.7.7 Format_Information_Content: .csv file File_Decompression_Technique: none Transfer_Size: 0.058 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://www.sciencebase.gov/catalog/item/6281d019d34e3bef0c9a3b12 Network_Resource_Name: hhttps://doi.org/10.5066/P9K2GOAL Access_Instructions: Data can be downloaded using the Network_Resource_Name links. The first link is a direct link to download the zipped file of data and metadata. The second link points to a landing page with metadata and data. Fees: None. Technical_Prerequisites: These data can be viewed with any text editor software. Metadata_Reference_Information: Metadata_Date: 20220713 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey, Pacific Coastal and Marine Science Center Contact_Person: PCMSC Science Data Coordinator Contact_Address: Address_Type: mailing and physical Address: 2885 Mission Street City: Santa Cruz State_or_Province: CA Postal_Code: 95060 Contact_Voice_Telephone: 831-427-4747 Contact_Electronic_Mail_Address: pcmsc_data@usgs.gov Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998