http://lod.bco-dmo.org/id/dataset/882140
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
2022-10-11
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Radium isotope measurements from bottom waters in the South Atlantic Bight from 2015-2020 (SAB BMA project)
2022-10-24
publication
2022-10-24
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2022-11-02
publication
https://doi.org/10.26008/1912/bco-dmo.882140.1
James L. Pinckney
University of South Carolina at Columbia
principalInvestigator
Willard S. Moore
University of South Carolina at Columbia
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: Pinckney, J., Moore, W. S. (2022) Radium isotope measurements from bottom waters in the South Atlantic Bight from 2015-2020 (SAB BMA project). Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2022-10-24 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.882140.1 [access date]
Radium isotope measurements from bottom waters in the South Atlantic Bight from 2015-2020 Dataset Description: Methods and Sampling: <p><strong>Methods &amp; Sampling</strong></p>
<p>Bottom water samples were obtained by lowering a submersible pump to near the seafloor and filling two 26-liter carboys. Subsamples for salinity were usually taken from each sample and measured with a YSI conductivity meter to confirm the CTD measurement. Radium samples were filtered through a column of Mn-fiber to quantitatively remove Ra [Moore, 1976]. The Mn-fiber was returned to the lab, where short-lived radium isotopes (<sup>223</sup>Ra, half-life = 11.4 days, and <sup>224</sup>Ra, half-life = 3.66 days) were measured using a delayed-coincidence counting system [Moore and Arnold, 1996]. After the short-lived measurements were complete, Ra and Mn were stripped from the Mn-fiber and radium was coprecipitated with BaSO<sub>4</sub> and transferred to a small tube. <sup>226</sup>Ra and <sup>228</sup>Ra were measured by gamma spectrometry after <sup>222</sup>Rn had equilibrated with <sup>226</sup>Ra [Moore et al., 1985]. The RaDeCC systems were calibrated for 224Ra with a NIST standard solution of 232Th adsorbed to Mn-fiber and for 223Ra by the technique of Moore and Cai [2013]. The gamma detector was calibrated with NIST standard solutions for <sup>226</sup>Ra and <sup>228</sup>Ra in a BaSO<sub>4</sub> matrix [Moore, 1984].</p>
<p>Samples were taken from R/V Trinity, owned by a private charter company called Charleston SCUBA. This company is no longer in operation.&nbsp;</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1736557 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1736557
completed
James L. Pinckney
University of South Carolina at Columbia
803-546-0768
Baruch Institute
Columbia
SC
29208
USA
pinckney@sc.edu
pointOfContact
Willard S. Moore
University of South Carolina at Columbia
Department of Earth & Ocean Sciences EWS 617, 701 Sumter St.
Columbia
SC
29208
USA
moore@geol.sc.edu
pointOfContact
asNeeded
Dataset Version: 1
Unknown
Sample_Number
Station
Latitude
Longitude
Year
Month
Day
Date
Total_Depth
Sample_Depth
Measured_226Ra
Measured_228Ra
Measured_224Ra
Measured_223Ra
Gamma Spectrometer, ORTEC
Submersible pump, Granger
RaDeCC System
theme
None, User defined
sample identification
station
latitude
longitude
year
month of year
day of month
date
depth
radium-226
radium-228
radium-224
radium-223
featureType
BCO-DMO Standard Parameters
Gamma Ray Spectrometer
Pump
Radium Delayed Coincidence Counter
instrument
BCO-DMO Standard Instruments
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.
Groundwater sources of "new" N for benthic microalgal production in the South Atlantic bight
https://osprey.bco-dmo.org/project/700280
Groundwater sources of "new" N for benthic microalgal production in the South Atlantic bight
<p><em>NSF Award Abstract:</em><br />
Continental shelves are highly productive, with both ecological and economic importance. Benthic microalgae (BMA) are key primary producers in these location. As much as 6x the water column biomass of primary producers is compressed into a layer only a few mm thick on the sediment surface. The source(s) of fixed nitrogen (N) supporting such highly concentrated BMA biomass is currently unknown. Recent studies of sub-seafloor groundwater flow at the University of South Carolina have demonstrated that upwelling saline groundwater likely supplies high concentrations of nutrients in the ridge-swale habitats in the South Atlantic Bight (SAB). The investigators suggest that groundwater input of fixed N into surficial sediments is the primary source of N supporting BMA biomass and production in the mid-shelf region of the SAB. The purpose of this project is to determine the primary source of fixed N supporting BMA biomass in the surface sediments of the shallow shelf waters (<30 m), using the SAB as a field area. A secondary objective is to apply novel and innovative methods to directly quantify groundwater inputs of N into surficial sediments. Research results will fully document the spatio-temporal distributions of BMA and phytoplankton biomass and community structure in the mid-shelf region of the SAB and relate the observed patterns to groundwater inputs of fixed N sources as well as hydrographic and climatic conditions. This research will provide full support and tuition for 2 graduate students, summer support for undergraduate assistants, and involve upper level undergraduates as lab interns. The study team will also work with the Baruch Institute and other partners to develop an "Ocean Schoolyard" program to meet the needs of teachers, students, and community audiences. The project will also provide partial support for Girls Go for I.T., a coding summer camp designed to attract middle-school-aged girls to careers in I.T. and STEM fields.</p>
<p>The specific objectives of the study are to (1) quantify spatial and temporal variations in N fluxes associated with hydrodynamic exchange and upward groundwater flow (2) document spatial and temporal variations in BMA biomass and (3) measure the delta15N of fixed nitrogen sources (well water, porewater and water column ammonium and nitrate; sediments), the BMA, and phytoplankton. The sampling area will be restricted to the 10 - 30 m isobath region of the SAB off the coast of Charleston, SC. Samples will be collected at both the existing groundwater well field and other regions of the shelf. At each of the groundwater wells in the well field, SCUBA divers will collect fluids from the wells to determine well water inorganic nutrient concentrations (nitrate + nitrite, ammonium, orthophosphate, silicon) and the delta 15N of well water ammonium and nitrate (when present). In nearby sediments, samples will be collected for BMA biomass and community composition, surface porewater inorganic nutrients (nitrate + nitrite, ammonium, orthophosphate, silicon), C and N of sediments, sediment grain size analysis, and delta 15N of BMA, ammonium, nitrate (when present), and sediments. Line transects, consisting of 5 sampling locations along a 50 m transect, will be conducted in each of the 4 depth strata. At 10 m intervals along each transect, divers will collect samples the same as above for the well field. Water column samples will be collected for HPLC measurements of phytoplankton biomass and community composition, inorganic nutrient concentrations (nitrate + nitrite, ammonium, orthophosphate, silicon), seston CHN, delta 15N of phytoplankton, and the delta 15N of ammonium and nitrate. The researchers will use heat as a tracer to map the depth of hydrodynamic exchange and monitor the rate of vertical groundwater flow. Results from that analysis will also allow them to then simulate transport of a conservative tracer that can be compared to observed nutrient concentrations to BMA abundance and community composition.</p>
SAB BMA
largerWorkCitation
project
eng; USA
oceans
-79
-79
32
32
2015-06-02
2020-05-11
South Atlantic Bight (32 N, 79 W)
0
BCO-DMO catalogue of parameters from Radium isotope measurements from bottom waters in the South Atlantic Bight from 2015-2020 (SAB BMA 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
http://lod.bco-dmo.org/id/dataset-parameter/882935.rdf
Name: Sample_Number
Units: unitless
Description: <p>Expedition-based sample identifier</p>
http://lod.bco-dmo.org/id/dataset-parameter/882936.rdf
Name: Station
Units: unitless
Description: <p>Reference sites</p>
http://lod.bco-dmo.org/id/dataset-parameter/882937.rdf
Name: Latitude
Units: decimal degrees
Description: <p>Latitude; a positive value indicates a Northern coordinate</p>
http://lod.bco-dmo.org/id/dataset-parameter/882938.rdf
Name: Longitude
Units: decimal degrees
Description: <p>Longitude; a negative values indicates a Western coordinate</p>
http://lod.bco-dmo.org/id/dataset-parameter/882939.rdf
Name: Year
Units: unitless
Description: <p>Year sample collected</p>
http://lod.bco-dmo.org/id/dataset-parameter/882940.rdf
Name: Month
Units: unitless
Description: <p>Month sample collected</p>
http://lod.bco-dmo.org/id/dataset-parameter/882941.rdf
Name: Day
Units: unitless
Description: <p>Day sample collected</p>
http://lod.bco-dmo.org/id/dataset-parameter/882942.rdf
Name: Date
Units: unitless
Description: <p>Date sample collected</p>
http://lod.bco-dmo.org/id/dataset-parameter/882943.rdf
Name: Total_Depth
Units: meters
Description: <p>Depth of water column</p>
http://lod.bco-dmo.org/id/dataset-parameter/882944.rdf
Name: Sample_Depth
Units: meters
Description: <p>Depth of sampling</p>
http://lod.bco-dmo.org/id/dataset-parameter/882945.rdf
Name: Measured_226Ra
Units: decays per minute per liter
Description: <p>Measured Radium-226 activity in the bottom water</p>
http://lod.bco-dmo.org/id/dataset-parameter/882946.rdf
Name: Measured_228Ra
Units: decays per minute per liter
Description: <p>Measured Radium-228 activity in the bottom water</p>
http://lod.bco-dmo.org/id/dataset-parameter/882947.rdf
Name: Measured_224Ra
Units: decays per minute per liter
Description: <p>Measured Radium-224 activity in the bottom water</p>
http://lod.bco-dmo.org/id/dataset-parameter/882948.rdf
Name: Measured_223Ra
Units: decays per minute per liter
Description: <p>Measured Radium-223 activity in the bottom water</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
2623
https://darchive.mblwhoilibrary.org/bitstream/1912/29460/1/dataset-882140_radium-data-south-atlantic-bight-bottom-waters__v1.tsv
download
https://doi.org/10.26008/1912/bco-dmo.882140.1
download
onLine
dataset
<p><strong>Methods &amp; Sampling</strong></p>
<p>Bottom water samples were obtained by lowering a submersible pump to near the seafloor and filling two 26-liter carboys. Subsamples for salinity were usually taken from each sample and measured with a YSI conductivity meter to confirm the CTD measurement. Radium samples were filtered through a column of Mn-fiber to quantitatively remove Ra [Moore, 1976]. The Mn-fiber was returned to the lab, where short-lived radium isotopes (<sup>223</sup>Ra, half-life = 11.4 days, and <sup>224</sup>Ra, half-life = 3.66 days) were measured using a delayed-coincidence counting system [Moore and Arnold, 1996]. After the short-lived measurements were complete, Ra and Mn were stripped from the Mn-fiber and radium was coprecipitated with BaSO<sub>4</sub> and transferred to a small tube. <sup>226</sup>Ra and <sup>228</sup>Ra were measured by gamma spectrometry after <sup>222</sup>Rn had equilibrated with <sup>226</sup>Ra [Moore et al., 1985]. The RaDeCC systems were calibrated for 224Ra with a NIST standard solution of 232Th adsorbed to Mn-fiber and for 223Ra by the technique of Moore and Cai [2013]. The gamma detector was calibrated with NIST standard solutions for <sup>226</sup>Ra and <sup>228</sup>Ra in a BaSO<sub>4</sub> matrix [Moore, 1984].</p>
<p>Samples were taken from R/V Trinity, owned by a private charter company called Charleston SCUBA. This company is no longer in operation.&nbsp;</p>
Specified by the Principal Investigator(s)
<p><strong>Processing notes from researcher:</strong></p>
<p>The 224Ra and 223Ra counting data were analyzed using the procedure detailed in Moore and Arnold [1996] to correct for chance coincidence events. The gamma spectra for 228Ra and 226Ra were analyzed using the program HYPERMET, which employs multiple iterations to fit each peak in the spectra to an energy range [Phillips and Marlow, 1996]. The energy ranges are assigned to specific radionuclides based on the measurements of NIST standards.</p>
<p><strong>BCO-DMO processing notes:</strong></p>
<ul>
<li>Added a date field (a concatenation of the year, day and month fields)</li>
<li>Replaced spaces in column names with underscores "_"</li>
<li>Removed units and special characters from column names</li>
<li>Renamed column names that started with numerical characters (e.g., 226Ra is now Measured_226_Ra)</li>
</ul>
Specified by the Principal Investigator(s)
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
Gamma Spectrometer, ORTEC
Gamma Spectrometer, ORTEC
PI Supplied Instrument Name: Gamma Spectrometer, ORTEC PI Supplied Instrument Description:After the short-lived measurements were complete, Ra and Mn were stripped from the Mn-fiber and radium was coprecipitated with BaSO4 and transferred to a small tube. 226Ra and 228Ra were measured by gamma spectrometry after 222Rn had equilibrated with 226Ra [Moore et al., 1985]. 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.
Submersible pump, Granger
Submersible pump, Granger
PI Supplied Instrument Name: Submersible pump, Granger PI Supplied Instrument Description:Bottom water samples were obtained by lowering a submersible pump to near the seafloor and filling two 26-liter carboys. 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 System
RaDeCC System
PI Supplied Instrument Name: RaDeCC System PI Supplied Instrument Description:The Mn-fiber was returned to the lab, where short-lived radium isotopes (223Ra, half-life = 11.4 days, and 224Ra, half-life = 3.66 days) were measured using a delayed-coincidence counting system [Moore and Arnold, 1996]. 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.