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Dataset Overview | National Centers for Environmental Information (NCEI)

Radium isotope measurements from CTD and underway water samples from the R/V Endeavor from 2018-05-06 to 2018-05-29 (NCEI Accession 0278814)

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This dataset contains physical data collected on R/V Endeavor during cruise EN614 in the North Atlantic Ocean from 2018-05-06 to 2018-05-29. These data include depth and salinity calculated from CTD primary sensors. The instruments used to collect these data include Niskin bottle, Pump - Surface Underway Ship Intake, Radium Delayed Coincidence Counter, and Sea-Bird SeaCAT Thermosalinograph SBE 21. These data were collected by Richard N. Peterson of Coastal Carolina University, Joseph P. Montoya of Georgia Institute of Technology, and Ajit Subramaniam of Lamont-Doherty Earth Observatory as part of the "Collaborative Research: Impact of the Amazon River Plume on Nitrogen Availability and Planktonic Food Web Dynamics in the Western Tropical North Atlantic (Amazon River Plume Nitrogen)" project. The Biological and Chemical Oceanography Data Management Office (BCO-DMO) submitted these data to NCEI on 2020-05-01.

The following is the text of the dataset description provided by BCO-DMO:

Radium isotope (223Ra, 224Ra, and 226Ra) measurements from CTD and underway water samples.

Dataset Description:
Water samples for radium isotope analysis were collected from both the ship’s clean underway intake system (‘U’ designator in data sheet) and Niskin bottles attached to the CTD rosette (‘C’ designator in data sheet). Salinity data derived from ship’s clean underway intake system with SBE 21 SEACAT Thermosalinograph.
  • Cite as: Peterson, Richard N.; Montoya, Joseph; Subramaniam, Ajit (2023). Radium isotope measurements from CTD and underway water samples from the R/V Endeavor from 2018-05-06 to 2018-05-29 (NCEI Accession 0278814). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/0278814. Accessed [date].
gov.noaa.nodc:0278814
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Distribution Formats
  • TSV
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Distributor NOAA National Centers for Environmental Information
+1-301-713-3277
NCEI.Info@noaa.gov
Dataset Point of Contact NOAA National Centers for Environmental Information
ncei.info@noaa.gov
Time Period 2018-05-06 to 2018-05-29
Spatial Bounding Box Coordinates
West: -57.257
East: -50.459
South: 4.89
North: 16.292
Spatial Coverage Map
General Documentation
Associated Resources
  • Biological, chemical, physical, biogeochemical, ecological, environmental and other data collected from around the world during historical and contemporary periods of biological and chemical oceanographic exploration and research managed and submitted by the Biological and Chemical Oceanography Data Management Office (BCO-DMO)
    • NCEI Collection
      Navigate directly to the URL for data access and direct download.
  • Peterson, R. N., Montoya, J. P., Subramaniam, A. (2019) Radium isotope measurements from CTD and underway water samples from the R/V Endeavor from 2018-05-06 to 2018-05-29. Dataset version 2019-02-11. https://doi.org/10.26008/1912/bco-dmo.753837.1
    • Parent ID (indicates this dataset is related to other data):
    • gov.noaa.nodc:BCO-DMO
Publication Dates
  • publication: 2023-05-27
Data Presentation Form Digital table - digital representation of facts or figures systematically displayed, especially in columns
Dataset Progress Status Complete - production of the data has been completed
Historical archive - data has been stored in an offline storage facility
Data Update Frequency As needed
Supplemental Information
Acquisition Description:
Water samples were filtered through 47 mm GFF filters (unless otherwise noted), then passed slowly through 25 g (dry) acrylic fibers impregnated with MnO2 (Moore, 1976). Fibers were then washed 10x with Ra-free freshwater to remove salts and dried to a mass between 35 and 57 g for optimal humidity levels (Sun and Torgersen, 1998). Fibers were then immediately counted on a Radium Delayed Coincidence Counter (RaDeCC; Moore and Arnold, 1996) for total Ra-224 and Ra-223. Roughly 3 weeks later, fibers were counted again for supported Ra-224. Thus, excess (‘XS’) Ra-224 is the difference between total and supported Ra-224 measurements. Ra-226 activities were then measured on a radon emanation line as per Peterson et al. (2009).

Minimum detectable activities (dpm/100L) are calculated based on Currie (1968). Any measured values lower than the minimum detectable activity is labeled ‘BD’
Purpose This dataset is available to the public for a wide variety of uses including scientific research and analysis.
Use Limitations
  • accessLevel: Public
  • Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives.
Theme keywords NODC DATA TYPES THESAURUS NODC OBSERVATION TYPES THESAURUS WMO_CategoryCode
  • oceanography
BCO-DMO Standard Parameters Global Change Master Directory (GCMD) Science Keywords Originator Parameter Names
Data Center keywords NODC COLLECTING INSTITUTION NAMES THESAURUS NODC SUBMITTING INSTITUTION NAMES THESAURUS Global Change Master Directory (GCMD) Data Center Keywords
Platform keywords NODC PLATFORM NAMES THESAURUS BCO-DMO Platform Names Global Change Master Directory (GCMD) Platform Keywords ICES/SeaDataNet Ship Codes
Instrument keywords NODC INSTRUMENT TYPES THESAURUS BCO-DMO Standard Instruments Global Change Master Directory (GCMD) Instrument Keywords Originator Instrument Names
Place keywords NODC SEA AREA NAMES THESAURUS Global Change Master Directory (GCMD) Location Keywords Provider Place Names
Project keywords BCO-DMO Standard Projects Provider Cruise IDs Provider Funding Award Information
Keywords NCEI ACCESSION NUMBER
Use Constraints
  • Cite as: Peterson, Richard N.; Montoya, Joseph; Subramaniam, Ajit (2023). Radium isotope measurements from CTD and underway water samples from the R/V Endeavor from 2018-05-06 to 2018-05-29 (NCEI Accession 0278814). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/0278814. Accessed [date].
Data License
Access Constraints
  • Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose.
Fees
  • In most cases, electronic downloads of the data are free. However, fees may apply for custom orders, data certifications, copies of analog materials, and data distribution on physical media.
Lineage information for: dataset
Processing Steps
  • 2023-05-27T04:45:36Z - NCEI Accession 0278814 v1.1 was published.
Output Datasets
Acquisition Information (collection)
Instrument
  • Niskin bottle
Platform
  • ENDEAVOR
Last Modified: 2024-05-31T15:15:28Z
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