http://lod.bco-dmo.org/id/dataset/982223
eng; USA
utf8
dataset
Highest level of data collection, from a common set of sensors or instrumentation, usually within the same research project
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
2025-08-11
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Dissolved radium from STING I Cruise AE2305 on R/V Atlantic Explorer and STING II Cruise EN704 on R/V Endeavor and U.S. Geological Survey small boat surveys in the Gulf of Mexico from Feb to Jul 2023
2025-09-18
publication
2025-09-18
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2025-09-19
publication
https://doi.org/10.26008/1912/bco-dmo.982223.1
Joseph Tamborski
Old Dominion University
principalInvestigator
Rene Maurice Boiteau
University of Minnesota
principalInvestigator
Kristen Nicolle Buck
Oregon State University
principalInvestigator
Phoebe Dreux Chappell
University of South Florida
principalInvestigator
Timothy M. Conway
University of South Florida
principalInvestigator
Angela N. Knapp
Florida State University
principalInvestigator
Chris Smith
United States Geological Survey
principalInvestigator
Aaron Alorda-Kleinglass
Old Dominion University
principalInvestigator
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
publisher
Cite this dataset as: Tamborski, J., Lindgren, A., Alorda-Kleinglass, A., Buck, K. N., Boiteau, R. M., Chappell, P. D., Conway, T. M., Smith, C., Knapp, A. N. (2025) Dissolved radium from STING I Cruise AE2305 on R/V Atlantic Explorer and STING II Cruise EN704 on R/V Endeavor and U.S. Geological Survey small boat surveys in the Gulf of Mexico from Feb to Jul 2023. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2025-09-18 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.982223.1 [access date]
STING I and STING II radium Dataset Description: Methods and Sampling: <p><strong>Collection</strong></p>
<p>Samples were collected&nbsp;on&nbsp;STING I and STING II during cruises AE2305 (R/V Atlantic Explorer, Feb 20th - Mar 5th 2023), EN704 (R/V Endeavor Jul 1-12, 2023), and&nbsp;23WFS02 (R/V Sallenger, Jun 3-7, 2023).&nbsp;Surface water salinity and temperature measurements were taken from the ship underway system (AE2305 and EN704) and a flow-cell (23WFS02; YSI ProDSS; Chestang et al., 2025), and from the ship CTD for intermediate and bottom waters.</p>
<p>Surface samples were collected at all stations via submersible pump lowered 1.5 m below the water’s surface. Intermediate depth and bottom water samples were collected at stations along three transects that crossed the entire shelf from nearshore to the shelf break via Niskin bottles on the CTD Rosette. Samples ranged from 114 to 170 L in volume&nbsp;on AE2305 and EN704, and ~45 – 60 L in volume on 23WFS02 (Chestang et al., 2025).</p>
<p>Samples were passed through a 1 µm prefilter to remove suspended particles before being filtered at &lt; 1L/min onto a MnO<sub>2</sub>-coated acrylic fiber to adsorb Ra. Samples were washed with Ra-free deionized water to remove salts and remaining particles, then dried to a 1:1 fiber:water mass ratio (Moore, 2008).</p>
<p><strong>Measurements</strong></p>
<p>Short-lived <sup>223</sup>Ra and <sup>224</sup>Ra were measured underway using a delayed coincidence counter (RaDeCC) (Moore and Arnold 1996), following recommended best-practices (Diego-Feliu et al. 2020). Additional measurements were performed in the laboratory one month (<sup>228</sup>Th) and two months (<sup>227</sup>Ac) post-collection to assess parent activities supporting <sup>223</sup>Ra and <sup>224</sup>Ra. <sup>232</sup>Th standards in equilibrium with <sup>228</sup>Th were measured separately in the lab and underway to assess detector efficiencies for <sup>224</sup>Ra and <sup>223</sup>Ra (Moore &amp; Cai, 2013); background counts were similarly measured both in the lab and at sea. Errors are propagated from counting statistics, chance-coincidence corrections, and detector efficiencies (Diego-Feliu et al. 2020). Short-lived Ra isotope specific activity from 23WFS02, with accompanying physicochemical parameters, is reported in Chestang et al. (2025).&nbsp;Following, the Mn-coated acrylic fibers were combusted at 850 °C for 16 hours, homogenized, sealed with epoxy resin, and incubated for a minimum of three weeks until <sup>222</sup>Rn was in secular equilibrium with its parent <sup>226</sup>Ra. Long-lived Ra isotopes measured via gamma spectroscopy in a Ge well-type detector for <sup>226</sup>Ra (352 keV photopeak) and <sup>228</sup>Ra (average of 338 and 911 keV photopeak’s), with efficiencies calibrated using standards prepared in the same fashion as the seawater samples (Charette et al., 2001).</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-2148836 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=2148836
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-2149091 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=2149091
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-2148989 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=2148989
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-2148812 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=2148812
completed
Joseph Tamborski
Old Dominion University
631-790-1579
339 Oceanography & Physics Bldg
Norfolk
VA
23529
USA
jtambors@odu.edu
pointOfContact
Rene Maurice Boiteau
University of Minnesota
612-625-6983
228 Smith Hall 207 Pleasant Street Se
Minneapolis
MN
55455
USA
rboiteau@umn.edu
pointOfContact
Kristen Nicolle Buck
Oregon State University
541-737-7401
2651 SW Orchard Avenue CEOAS
Corvallis
OR
97331
USA
kristen.buck@oregonstate.edu
pointOfContact
Phoebe Dreux Chappell
University of South Florida
USF St. Petersburg campus 140 7th Ave. South
St. Petersburg
FL
33701
USA
dreux@usf.edu
pointOfContact
Timothy M. Conway
University of South Florida
727-258-1081
College of Marine Sciences 830 1st St SE
St. Petersburg
FL
33701
USA
tmconway@usf.edu
pointOfContact
Angela N. Knapp
Florida State University
(979) 862-5235
797 Lamar St. Dept of Oceanography, Eller O&M Room 1204
College Station
TX
77843
USA
aknapp@tamu.edu
pointOfContact
Chris Smith
United States Geological Survey
727-510-9884
600 4th St. S.
St. Petersburg
FL
33701
USA
cgsmith@usgs.gov
pointOfContact
Aaron Alorda-Kleinglass
Old Dominion University
akleingl@odu.edu
pointOfContact
asNeeded
Dataset Version: 1
Unknown
Cruise_name
Station
STING_ID
Sample_Name
DateTime_UTC
Latitude
Longitude
Depth
Salinity
Temperature
Ra223
Ra223_BDL_flag
Ra223_err
Ra223_err_BDL_flag
Ra224
Ra224_BDL_flag
Ra224_err
Ra224_err_BDL_flag
Ra226
Ra226_BDL_flag
Ra226_err
Ra226_err_BDL_flag
Ra228
Ra228_BDL_flag
Ra228_err
Ra228_err_BDL_flag
Th228
Th228_BDL_flag
Th228_err
Th228_err_BDL_flag
Ac227
Ac227_BDL_flag
Ac227_err
Ac227_err_BDL_flag
CTD
well-type gamma spectrometer: Gamma detector made by Canberra or Ortec
Niskin bottles on the CTD Rosette
submersible pump: Tsurumi submersible pump for surface water sampling
RaDeCC: Radium Delayed Coincidence Counter system made by Scientific Computer Instruments
theme
None, User defined
cruise name
station
sample identification
ISO_DateTime_UTC
latitude
longitude
depth
salinity
water temperature at measurement depth
radium-223
quality flag
radioactive isotope conc error
radium-224
radium-226
radium-228
radioactive isotope concentration
actinium-227
featureType
BCO-DMO Standard Parameters
CTD Sea-Bird SBE 911plus
Gamma Ray Spectrometer
Niskin bottle
Pump
Radium Delayed Coincidence Counter
instrument
BCO-DMO Standard Instruments
EN704
AE2305
service
Deployment Activity
Gulf of Mexico near Florida
place
Locations
otherRestrictions
otherRestrictions
Access Constraints: none. Use Constraints: Please follow guidelines at: http://www.bco-dmo.org/terms-use Distribution liability: Under no circumstances shall BCO-DMO be liable for any direct, incidental, special, consequential, indirect, or punitive damages that result from the use of, or the inability to use, the materials in this data submission. If you are dissatisfied with any materials in this data submission your sole and exclusive remedy is to discontinue use.
Collaborative Research: Linking iron and nitrogen sources in an oligotrophic coastal margin: Nitrogen fixation and the role of boundary fluxes
https://osprey.bco-dmo.org/project/880516
Collaborative Research: Linking iron and nitrogen sources in an oligotrophic coastal margin: Nitrogen fixation and the role of boundary fluxes
<p><strong>NSF Award Abstract:</strong><br />
This project will investigate how groundwater discharge delivers important nutrients to the coastal ecosystems of the West Florida Shelf. Preliminary studies indicate that groundwater may supply both dissolved organic nitrogen (DON) and iron in this region. In coastal ecosystems like the West Florida Shelf that have very low nitrate and ammonium concentrations, DON is the main form of nitrogen available to organisms. Nitrogen cycling is strongly affected by iron availability because iron is essential for both photosynthesis and for nitrogen fixation. This study will investigate the sources and composition of DON and iron, and their influence on the coastal ecosystem. The team will sample offshore groundwater wells, river and estuarine waters, and conduct two expeditions across the West Florida Shelf in winter and summer. Investigators will participate in K-12 and outreach activities to increase awareness of the project and related science. The project will fund the work of six graduate and eight undergraduate students across five institutions, furthering NSF’s goals of education and training.</p>
<p>Motivated by preliminary observations of unexplained, tightly-correlated DON and dissolved iron concentrations across the West Florida Shelf (WFS), the proposed work will quantify the flux and isotopic signatures of submarine groundwater discharge (SGD)-derived DON and iron to the WFS, and evaluate the bioavailability of this temporally-variable source using four seasonal near-shore campaigns sampling offshore groundwater wells, estuarine, and riverine endmembers and two cross-shelf cruises. The work will evaluate whether SGD stimulates nitrogen fixation on the WFS, and the potential for the stimulated nitrogen fixation to further modify the chemistry of DON and dissolved iron in the region. The cross-shelf cruises will investigate hypothesized periods of maximum SGD and Trichodesmium abundance (June), and reduced river discharge and SGD (February), thus comparing two distinct biogeochemical regimes. The concentrations and isotopic compositions of DON and dissolved iron, molecular composition of DON, and the concentration and composition of iron-binding ligands will be characterized. Nitrogen fixation rates and Trichodesmium spp. abundance and expression of iron stress genes will be measured. Fluxes of DON and iron from SGD and rivers will be quantified with radium isotope mass balances. The impacts of SGD on nitrogen fixation and DON/ligand production will be constrained with incubations of natural phytoplankton communities with submarine groundwater amendments. Two hypotheses will be tested: 1) SGD is the dominant source of bioavailable DON and dissolved iron on the WFS, and 2) SGD-alleviation of iron stress changes the dominant Trichodesmium species on the WFS, increases nitrogen fixation rates and modifies DON and iron composition. Overall, the work will establish connections between marine nitrogen and iron cycling and evaluate the potential for coastal inputs to modify water along the WFS before export to the Atlantic Ocean. This study will thus provide a framework to consider these boundary fluxes in oligotrophic coastal systems and the relative importance of rivers and SGD as sources of nitrogen and iron in other analogous locations, such as coastal systems in Australia, India, and Africa, where nitrogen fixation and SGD have also been documented.</p>
<p>This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.</p>
West Florida Shelf DON and Fe
largerWorkCitation
project
eng; USA
oceans
Gulf of Mexico near Florida
-86.578685
-82.515283
26.129667
28.499118
2023-02-20
2023-07-12
Gulf of Mexico/America, West Florida Shelf
0
BCO-DMO catalogue of parameters from Dissolved radium from STING I Cruise AE2305 on R/V Atlantic Explorer and STING II Cruise EN704 on R/V Endeavor and U.S. Geological Survey small boat surveys in the Gulf of Mexico from Feb to Jul 2023
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
http://lod.bco-dmo.org/id/dataset-parameter/983906.rdf
Name: Cruise_name
Units: unitless
Description: <p>Cruise name</p>
http://lod.bco-dmo.org/id/dataset-parameter/983907.rdf
Name: Station
Units: unitless
Description: <p>Station number</p>
http://lod.bco-dmo.org/id/dataset-parameter/983908.rdf
Name: STING_ID
Units: unitless
Description: <p>STING cruise sample ID</p>
http://lod.bco-dmo.org/id/dataset-parameter/983909.rdf
Name: Sample_Name
Units: unitless
Description: <p>Sample ID. ID code = cruise_YYMMDD_station;"S" refers to "surface"; "D" refers to "deep"</p>
http://lod.bco-dmo.org/id/dataset-parameter/983911.rdf
Name: DateTime_UTC
Units: unitless
Description: <p>DateTime sampled (UTC time)</p>
http://lod.bco-dmo.org/id/dataset-parameter/983912.rdf
Name: Latitude
Units: decimal degrees
Description: <p>Latitude of station (Positive is North)</p>
http://lod.bco-dmo.org/id/dataset-parameter/983913.rdf
Name: Longitude
Units: decimal degrees
Description: <p>Longitude of station (Negative is West)</p>
http://lod.bco-dmo.org/id/dataset-parameter/983914.rdf
Name: Depth
Units: meters
Description: <p>Depth of sample</p>
http://lod.bco-dmo.org/id/dataset-parameter/983915.rdf
Name: Salinity
Units: psu
Description: <p>Surface water salinity measurements taken from the ship underway system (AE2305 and EN704) and a flow-cell (23WFS02; YSI ProDSS; Chestang et al., 2025), and from the ship CTD for intermediate and bottom waters</p>
http://lod.bco-dmo.org/id/dataset-parameter/983916.rdf
Name: Temperature
Units: degrees Celsius
Description: <p>Surface water temperature measurements taken from the ship underway system (AE2305 and EN704) and a flow-cell (23WFS02; YSI ProDSS; Chestang et al., 2025), and from the ship CTD for intermediate and bottom waters</p>
http://lod.bco-dmo.org/id/dataset-parameter/983917.rdf
Name: Ra223
Units: dpm/100L
Description: <p>Ra-223 isotope specific activity</p>
http://lod.bco-dmo.org/id/dataset-parameter/983918.rdf
Name: Ra223_BDL_flag
Units: unitless
Description: <p>Below detection limit (BDL) flag for Ra-223 isotope specific activity; 0=N/A 1=BDL</p>
http://lod.bco-dmo.org/id/dataset-parameter/983919.rdf
Name: Ra223_err
Units: dpm/100L
Description: <p>Ra-223 isotope specific activity uncertainty</p>
http://lod.bco-dmo.org/id/dataset-parameter/983920.rdf
Name: Ra223_err_BDL_flag
Units: unitless
Description: <p>Below detection limit (BDL) flag for Ra-223 isotope specific activity uncertainty; 0=N/A 1=BDL</p>
http://lod.bco-dmo.org/id/dataset-parameter/983921.rdf
Name: Ra224
Units: dpm/100L
Description: <p>Ra-224 isotope specific activity</p>
http://lod.bco-dmo.org/id/dataset-parameter/983922.rdf
Name: Ra224_BDL_flag
Units: unitless
Description: <p>Below detection limit (BDL) flag for Ra-224 isotope specific activity; 0=N/A 1=BDL</p>
http://lod.bco-dmo.org/id/dataset-parameter/983923.rdf
Name: Ra224_err
Units: dpm/100L
Description: <p>Ra-224 isotope specific activity uncertainty</p>
http://lod.bco-dmo.org/id/dataset-parameter/983924.rdf
Name: Ra224_err_BDL_flag
Units: unitless
Description: <p>Below detection limit (BDL) flag for Ra-224 isotope specific activity uncertainty; 0=N/A 1=BDL</p>
http://lod.bco-dmo.org/id/dataset-parameter/983925.rdf
Name: Ra226
Units: dpm/100L
Description: <p>Ra-226 isotope specific activity</p>
http://lod.bco-dmo.org/id/dataset-parameter/983926.rdf
Name: Ra226_BDL_flag
Units: unitless
Description: <p>Below detection limit (BDL) flag for Ra-226 isotope specific activity; 0=N/A 1=BDL</p>
http://lod.bco-dmo.org/id/dataset-parameter/983927.rdf
Name: Ra226_err
Units: dpm/100L
Description: <p>Ra-226 isotope specific activity uncertainty</p>
http://lod.bco-dmo.org/id/dataset-parameter/983928.rdf
Name: Ra226_err_BDL_flag
Units: unitless
Description: <p>Below detection limit (BDL) flag for Ra-226 isotope specific activity uncertainty; 0=N/A 1=BDL</p>
http://lod.bco-dmo.org/id/dataset-parameter/983929.rdf
Name: Ra228
Units: dpm/100L
Description: <p>Ra-228 isotope specific activity</p>
http://lod.bco-dmo.org/id/dataset-parameter/983930.rdf
Name: Ra228_BDL_flag
Units: unitless
Description: <p>Below detection limit (BDL) flag for Ra-228 isotope specific activity; 0=N/A 1=BDL</p>
http://lod.bco-dmo.org/id/dataset-parameter/983931.rdf
Name: Ra228_err
Units: dpm/100L
Description: <p>Ra-228 isotope specific activity uncertainty</p>
http://lod.bco-dmo.org/id/dataset-parameter/983932.rdf
Name: Ra228_err_BDL_flag
Units: unitless
Description: <p>Below detection limit (BDL) flag for Ra-228 isotope specific activity uncertainty; 0=N/A 1=BDL</p>
http://lod.bco-dmo.org/id/dataset-parameter/983933.rdf
Name: Th228
Units: dpm/100L
Description: <p>Th-228 isotope specific activity</p>
http://lod.bco-dmo.org/id/dataset-parameter/983934.rdf
Name: Th228_BDL_flag
Units: unitless
Description: <p>Below detection limit (BDL) flag for Th-228 isotope specific activity; 0=N/A 1=BDL</p>
http://lod.bco-dmo.org/id/dataset-parameter/983935.rdf
Name: Th228_err
Units: dpm/100L
Description: <p>Th-228 isotope specific activity uncertainty</p>
http://lod.bco-dmo.org/id/dataset-parameter/983936.rdf
Name: Th228_err_BDL_flag
Units: unitless
Description: <p>Below detection limit (BDL) flag for Th-228 isotope specific activity uncertainty; 0=N/A 1=BDL</p>
http://lod.bco-dmo.org/id/dataset-parameter/983937.rdf
Name: Ac227
Units: dpm/100L
Description: <p>Ac-227 isotope specific activity</p>
http://lod.bco-dmo.org/id/dataset-parameter/983938.rdf
Name: Ac227_BDL_flag
Units: unitless
Description: <p>Below detection limit (BDL) flag for Ac-227 isotope specific activity; 0=N/A 1=BDL</p>
http://lod.bco-dmo.org/id/dataset-parameter/983939.rdf
Name: Ac227_err
Units: dpm/100L
Description: <p>Ac-227 isotope specific activity uncertainty</p>
http://lod.bco-dmo.org/id/dataset-parameter/983940.rdf
Name: Ac227_err_BDL_flag
Units: unitless
Description: <p>Below detection limit (BDL) flag for Ac-227 isotope specific activity uncertainty; 0=N/A 1=BDL</p>
GB/NERC/BODC > British Oceanographic Data Centre, Natural Environment Research Council, United Kingdom
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
27245
https://darchive.mblwhoilibrary.org/server/api/core/bitstreams/3eca19ed-5368-4384-9b98-575d538ed891/content
download
https://doi.org/10.26008/1912/bco-dmo.982223.1
download
onLine
dataset
<p><strong>Collection</strong></p>
<p>Samples were collected&nbsp;on&nbsp;STING I and STING II during cruises AE2305 (R/V Atlantic Explorer, Feb 20th - Mar 5th 2023), EN704 (R/V Endeavor Jul 1-12, 2023), and&nbsp;23WFS02 (R/V Sallenger, Jun 3-7, 2023).&nbsp;Surface water salinity and temperature measurements were taken from the ship underway system (AE2305 and EN704) and a flow-cell (23WFS02; YSI ProDSS; Chestang et al., 2025), and from the ship CTD for intermediate and bottom waters.</p>
<p>Surface samples were collected at all stations via submersible pump lowered 1.5 m below the water’s surface. Intermediate depth and bottom water samples were collected at stations along three transects that crossed the entire shelf from nearshore to the shelf break via Niskin bottles on the CTD Rosette. Samples ranged from 114 to 170 L in volume&nbsp;on AE2305 and EN704, and ~45 – 60 L in volume on 23WFS02 (Chestang et al., 2025).</p>
<p>Samples were passed through a 1 µm prefilter to remove suspended particles before being filtered at &lt; 1L/min onto a MnO<sub>2</sub>-coated acrylic fiber to adsorb Ra. Samples were washed with Ra-free deionized water to remove salts and remaining particles, then dried to a 1:1 fiber:water mass ratio (Moore, 2008).</p>
<p><strong>Measurements</strong></p>
<p>Short-lived <sup>223</sup>Ra and <sup>224</sup>Ra were measured underway using a delayed coincidence counter (RaDeCC) (Moore and Arnold 1996), following recommended best-practices (Diego-Feliu et al. 2020). Additional measurements were performed in the laboratory one month (<sup>228</sup>Th) and two months (<sup>227</sup>Ac) post-collection to assess parent activities supporting <sup>223</sup>Ra and <sup>224</sup>Ra. <sup>232</sup>Th standards in equilibrium with <sup>228</sup>Th were measured separately in the lab and underway to assess detector efficiencies for <sup>224</sup>Ra and <sup>223</sup>Ra (Moore &amp; Cai, 2013); background counts were similarly measured both in the lab and at sea. Errors are propagated from counting statistics, chance-coincidence corrections, and detector efficiencies (Diego-Feliu et al. 2020). Short-lived Ra isotope specific activity from 23WFS02, with accompanying physicochemical parameters, is reported in Chestang et al. (2025).&nbsp;Following, the Mn-coated acrylic fibers were combusted at 850 °C for 16 hours, homogenized, sealed with epoxy resin, and incubated for a minimum of three weeks until <sup>222</sup>Rn was in secular equilibrium with its parent <sup>226</sup>Ra. Long-lived Ra isotopes measured via gamma spectroscopy in a Ge well-type detector for <sup>226</sup>Ra (352 keV photopeak) and <sup>228</sup>Ra (average of 338 and 911 keV photopeak’s), with efficiencies calibrated using standards prepared in the same fashion as the seawater samples (Charette et al., 2001).</p>
Specified by the Principal Investigator(s)
- Imported "BCO-DMO_STING-I_Radium_Dataset.xlsx" and "BCO-DMO_STING-II_Radium_Dataset.xlsx" into the BCO-DMO system without any formatting
- Concatenated the data sources together, creating a cruise name column to identify "STING I" and STING II"
- Created flag column for all measurements to indicate BDL
- Converted local datetime into a new UTC datetime field and removed the local timestamp, as requested by submitter
- Exported file as "982223_v1_sting1_sting2_radium.csv"
Specified by BCO-DMO Data Managers
asNeeded
7.x-1.1
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
CTD
CTD
PI Supplied Instrument Name: CTD PI Supplied Instrument Description:Surface water salinity and temperature measurements were taken from the ship underway system (AE2305 and EN704) and a flow-cell (23WFS02; YSI ProDSS; Chestang et al., 2025), and from the ship CTD for intermediate and bottom waters. Instrument Name: CTD Sea-Bird SBE 911plus Instrument Short Name:CTD SBE 911plus Instrument Description: The Sea-Bird SBE 911 plus is a type of CTD instrument package for continuous measurement of conductivity, temperature and pressure. The SBE 911 plus includes the SBE 9plus Underwater Unit and the SBE 11plus Deck Unit (for real-time readout using conductive wire) for deployment from a vessel. The combination of the SBE 9 plus and SBE 11 plus is called a SBE 911 plus. The SBE 9 plus uses Sea-Bird's standard modular temperature and conductivity sensors (SBE 3 plus and SBE 4). The SBE 9 plus CTD can be configured with up to eight auxiliary sensors to measure other parameters including dissolved oxygen, pH, turbidity, fluorescence, light (PAR), light transmission, etc.). more information from Sea-Bird Electronics Community Standard Description: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0058/
well-type gamma spectrometer: Gamma detector made by Canberra or Ortec
well-type gamma spectrometer: Gamma detector made by Canberra or Ortec
PI Supplied Instrument Name: well-type gamma spectrometer: Gamma detector made by Canberra or Ortec PI Supplied Instrument Description:Long-lived Ra isotopes measured via gamma spectroscopy in a Ge well-type detector for 226Ra (352 keV photopeak) and 228Ra (average of 338 and 911 keV photopeak’s), with efficiencies calibrated using standards prepared in the same fashion as the seawater samples (Charette et al., 2001). Instrument Name: Gamma Ray Spectrometer Instrument Short Name: Instrument Description: Instruments measuring the relative levels of electromagnetic radiation of different wavelengths in the gamma-ray waveband.
Niskin bottles on the CTD Rosette
Niskin bottles on the CTD Rosette
PI Supplied Instrument Name: Niskin bottles on the CTD Rosette PI Supplied Instrument Description:Intermediate depth and bottom water samples were collected at stations along three transects that crossed the entire shelf from nearshore to the shelf break via Niskin bottles on the CTD Rosette. Instrument Name: Niskin bottle Instrument Short Name:Niskin bottle Instrument Description: A Niskin bottle (a next generation water sampler based on the Nansen bottle) is a cylindrical, non-metallic water collection device with stoppers at both ends. The bottles can be attached individually on a hydrowire or deployed in 12, 24, or 36 bottle Rosette systems mounted on a frame and combined with a CTD. Niskin bottles are used to collect discrete water samples for a range of measurements including pigments, nutrients, plankton, etc. Community Standard Description: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0412/
submersible pump: Tsurumi submersible pump for surface water sampling
submersible pump: Tsurumi submersible pump for surface water sampling
PI Supplied Instrument Name: submersible pump: Tsurumi submersible pump for surface water sampling PI Supplied Instrument Description:Surface samples were collected at all stations via submersible pump lowered 1.5 m below the water’s surface. Instrument Name: Pump Instrument Short Name: Instrument Description: A pump is a device that moves fluids (liquids or gases), or sometimes slurries, by mechanical action. Pumps can be classified into three major groups according to the method they use to move the fluid: direct lift, displacement, and gravity pumps
RaDeCC: Radium Delayed Coincidence Counter system made by Scientific Computer Instruments
RaDeCC: Radium Delayed Coincidence Counter system made by Scientific Computer Instruments
PI Supplied Instrument Name: RaDeCC: Radium Delayed Coincidence Counter system made by Scientific Computer Instruments PI Supplied Instrument Description:Short-lived 223Ra and 224Ra were measured underway using a delayed coincidence counter (RaDeCC) (Moore and Arnold 1996), following recommended best-practices (Diego-Feliu et al. 2020). Instrument Name: Radium Delayed Coincidence Counter Instrument Short Name:RaDeCC Instrument Description: The RaDeCC is an alpha scintillation counter that distinguishes decay events of short-lived radium daughter products based on their contrasting half-lives. This system was pioneered by Giffin et al. (1963) and adapted for radium measurements by Moore and Arnold (1996).
References:
Giffin, C., A. Kaufman, W.S. Broecker (1963). Delayed coincidence counter for the assay of actinon and thoron. J. Geophys. Res., 68, pp. 1749-1757.
Moore, W.S., R. Arnold (1996). Measurement of 223Ra and 224Ra in coastal waters using a delayed coincidence counter. J. Geophys. Res., 101 (1996), pp. 1321-1329.
Charette, Matthew A.; Dulaiova, Henrieta; Gonneea, Meagan E.; Henderson, Paul B.; Moore, Willard S.; Scholten, Jan C.; Pham, M. K. (2012). GEOTRACES radium isotopes interlaboratory comparison experiment. Limnology and Oceanography - Methods, vol 10, pg 451.
Cruise: EN704
EN704
R/V Endeavor
Community Standard Description
International Council for the Exploration of the Sea
R/V Endeavor
vessel
EN704
Angela N. Knapp
Florida State University
Cruise: AE2305
AE2305
R/V Atlantic Explorer
Community Standard Description
International Council for the Exploration of the Sea
R/V Atlantic Explorer
vessel
AE2305
Angela N. Knapp
Florida State University
R/V Endeavor
Community Standard Description
International Council for the Exploration of the Sea
R/V Endeavor
vessel
R/V Atlantic Explorer
Community Standard Description
International Council for the Exploration of the Sea
R/V Atlantic Explorer
vessel