Water-column environmental variables and accompanying discrete CTD measurements collected offshore the U.S. Mid- and South Atlantic (ver. 2.0, July 2022)

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Metadata:

Identification_Information
Data_Quality_Information
Spatial_Data_Organization_Information
Spatial_Reference_Information
Entity_and_Attribute_Information
Distribution_Information
Metadata_Reference_Information

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

This page is <https://cmgds.marine.usgs.gov/catalog/pcmsc/DataReleases/ScienceBase/DR_P9K2GOAL/DEEPSEARCH_CTD_BTLDATA_v.2.0_metadata.html>