http://lod.bco-dmo.org/id/dataset/3836
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
2013-01-04
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Water-column total Thorium-234 and Uranium-238 from R/V Knorr cruises KN199-04 and KN204-01 in the Subtropical northern Atlantic Ocean from 2010-2011 (U.S. GEOTRACES NAT project)
2013-03-25
publication
2013-03-25
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2020-03-30
publication
https://doi.org/10.26008/1912/bco-dmo.3836.2
Kenneth O. Buesseler
Woods Hole Oceanographic Institution
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: Buesseler, K. (2020) Water-column total Thorium-234 and Uranium-238 from R/V Knorr cruises KN199-04 and KN204-01 in the Subtropical northern Atlantic Ocean from 2010-2011 (U.S. GEOTRACES NAT project). Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 2) Version Date 2013-03-25 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.3836.2 [access date]
Water-column total Thorium-234 and Uranium-238. Dataset Description: <p>Water-column total Th-234 with 4 L method and U-238 from U-salinity relationship from the 2010 and 2011 U.S. GEOTRACES cruises.</p> Methods and Sampling: <p><strong>Uranium-238</strong><br />
Value and uncertainty from equation derived in Owens et al. (2011)<br />
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; U-238 (dpm/L) = (Salinity * 0.0786) - 0.315<br />
Salinity was measured onboard the ship by the Scripps Ocean Data Facility.</p>
<p><strong>Thorium-234</strong><br />
Determined by the widely-adopted 4 L method. Shallow (&lt; 1000 m) samples were collected from the SIO ODF Rosette and deep samples (&gt;1000 m) were collected from Niskin bottles hung above in situ pumps. Data are decay corrected to the mid-point time between when bottles 1 and 12 were fired for shallow casts and when the messenger was dropped for deep cast. All surface samples were collected using a deck-mounted pump (denoted as bottle 13). All data have been recovery-corrected using the Th-230/Th-229 recovery method (see references below) to account for any loss of sample material during processing. All samples were analyzed using RISO Laboratory Anti-coincidence Beta Counters, using a helium/1% butane mixture. Overall method efficiency was determined by minimizing the percent difference between mean U-238 and Th-234 values for samples from &gt;1000 m to &gt; 1000 m from the bottom (44.5 % for KN 199-4 and 46.4 % for KN 204-01a and KN 204-01b).</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-0925158 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=0925158
completed
Kenneth O. Buesseler
Woods Hole Oceanographic Institution
508-289-2309
266 Woods Hole Road MS #25
Woods Hole
MA
02543
USA
kbuesseler@whoi.edu
pointOfContact
asNeeded
Dataset Version: 2
Unknown
cruise_id
cruise_part
station_GEOTRC
lat
lon
event
cast_GEOTRC
month_gmt
day_gmt
year
time_gmt
bottle
sample_GEOTRC
depth_n
depth
U238
U238_unc
Th234_tot
Th_234_tot_unc
q_flag
depth_GEOTRC_CTD
event_GEOTRC
sample_bottle_GEOTRC
bottle_GEOTRC
Cast_ISO_DateTime_UTC
BTL_ISO_DateTime_UTC
Niskin bottle
Riso Laboratory Anti-coincidence Beta Counters
theme
None, User defined
Cruise identfier
cruise_part
station
latitude
longitude
event
cast
month_gmt
day_gmt
year
time_gmt
bottle
sample identification
depth nominal
depth
radioactive isotope concentration
No BCO-DMO term
quality flag
Niskin bottle number
ISO_DateTime_UTC
featureType
BCO-DMO Standard Parameters
Niskin bottle
Riso Laboratory Anti-coincidence Beta Counter
instrument
BCO-DMO Standard Instruments
KN199-04
KN204-01
service
Deployment Activity
Subtropical northern Atlantic Ocean
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.
U.S. GEOTRACES
http://www.geotraces.org/
U.S. GEOTRACES
GEOTRACES is a SCOR sponsored program; and funding for program infrastructure development is provided by the U.S. National Science Foundation.
GEOTRACES gained momentum following a special symposium, S02: Biogeochemical cycling of trace elements and isotopes in the ocean and applications to constrain contemporary marine processes (GEOSECS II), at a 2003 Goldschmidt meeting convened in Japan. The GEOSECS II acronym referred to the Geochemical Ocean Section Studies To determine full water column distributions of selected trace elements and isotopes, including their concentration, chemical speciation, and physical form, along a sufficient number of sections in each ocean basin to establish the principal relationships between these distributions and with more traditional hydrographic parameters;
* To evaluate the sources, sinks, and internal cycling of these species and thereby characterize more completely the physical, chemical and biological processes regulating their distributions, and the sensitivity of these processes to global change; and
* To understand the processes that control the concentrations of geochemical species used for proxies of the past environment, both in the water column and in the substrates that reflect the water column.
GEOTRACES will be global in scope, consisting of ocean sections complemented by regional process studies. Sections and process studies will combine fieldwork, laboratory experiments and modelling. Beyond realizing the scientific objectives identified above, a natural outcome of this work will be to build a community of marine scientists who understand the processes regulating trace element cycles sufficiently well to exploit this knowledge reliably in future interdisciplinary studies.
Expand "Projects" below for information about and data resulting from individual US GEOTRACES research projects.
U.S. GEOTRACES
largerWorkCitation
program
U.S. GEOTRACES North Atlantic Transect (GA03)
https://www.geotraces.org/
U.S. GEOTRACES North Atlantic Transect (GA03)
<p><em>Much of this text appeared in an article published in OCB News, October 2008, by the OCB Project Office.</em></p>
<p>The first U.S. GEOTRACES Atlantic Section will be specifically centered around a sampling cruise to be carried out in the North Atlantic in 2010. Ed Boyle (MIT) and Bill Jenkins (WHOI) organized a three-day planning workshop that was held September 22-24, 2008 at the Woods Hole Oceanographic Institution. The main goal of the workshop, sponsored by the National Science Foundation and the U.S. GEOTRACES Scientific Steering Committee, was to design the implementation plan for the first U.S. GEOTRACES Atlantic Section. The primary cruise design motivation was to improve knowledge of the sources, sinks and internal cycling of Trace Elements and their Isotopes (TEIs) by studying their distributions along a section in the North Atlantic (Figure 1). The North Atlantic has the full suite of processes that affect TEIs, including strong meridional advection, boundary scavenging and source effects, aeolian deposition, and the salty Mediterranean Outflow. The North Atlantic is particularly important as it lies at the "origin" of the global Meridional Overturning Circulation.</p>
<p>It is well understood that many trace metals play important roles in biogeochemical processes and the carbon cycle, yet very little is known about their large-scale distributions and the regional scale processes that affect them. Recent advances in sampling and analytical techniques, along with advances in our understanding of their roles in enzymatic and catalytic processes in the open ocean provide a natural opportunity to make substantial advances in our understanding of these important elements. Moreover, we are motivated by the prospect of global change and the need to understand the present and future workings of the ocean's biogeochemistry. The GEOTRACES strategy is to measure a broad suite of TEIs to constrain the critical biogeochemical processes that influence their distributions. In addition to these "exotic" substances, more traditional properties, including macronutrients (at micromolar and nanomolar levels), CTD, bio-optical parameters, and carbon system characteristics will be measured. The cruise starts at Line W, a repeat hydrographic section southeast of Cape Cod, extends to Bermuda and subsequently through the North Atlantic oligotrophic subtropical gyre, then transects into the African coast in the northern limb of the coastal upwelling region. From there, the cruise goes northward into the Mediterranean outflow. The station locations shown on the map are for the "fulldepth TEI" stations, and constitute approximately half of the stations to be ultimately occupied.</p>
<p><em>Figure 1. The proposed 2010 Atlantic GEOTRACES cruise track plotted on dissolved oxygen at 400 m depth. Data from the World Ocean Atlas (Levitus et al., 2005) were plotted using Ocean Data View (courtesy Reiner Schlitzer). [click on the image to view a larger version]</em><br />
<a href="http://bcodata.whoi.edu/US_GEOTRACES/AtlanticSection/GEOTRACES_Atl_stas.jpg" target="_blank"><img alt="" src="https://datadocs.bco-dmo.org/d2/US_GEOTRACES/AtlanticSection/GEOTRACES_Atl_stas.jpg" style="width:350px" /></a></p>
<p>Hydrography, CTD and nutrient measurements will be supported by the Ocean Data Facility (J. Swift) at Scripps Institution of Oceanography and funded through NSF Facilities. They will be providing an additional CTD rosette system along with nephelometer and LADCP. A trace metal clean Go-Flo Rosette and winch will be provided by the group at Old Dominion University (G. Cutter) along with a towed underway pumping system.</p>
<p>The North Atlantic Transect cruise began in 2010 with KN199 leg 4 (station sampling) and leg 5 (underway sampling only) (Figure 2).</p>
<p><a href="http://bcodata.whoi.edu//US_GEOTRACES/AtlanticSection/Cruise_Report_for_Knorr_199_Final_v3.pdf" target="_blank">KN199-04 Cruise Report (PDF)</a></p>
<p><em>Figure 2. The red line shows the cruise track for the first leg of the US Geotraces North Atlantic Transect on the R/V Knorr in October 2010. The rest of the stations (beginning with 13) will be completed in October-December 2011 on the R/V Knorr (courtesy of Bill Jenkins, Chief Scientist, GNAT first leg). [click on the image to view a larger version]</em><br />
<a href="http://bcodata.whoi.edu/US_GEOTRACES/AtlanticSection/GNAT_stationPlan.jpg" target="_blank"><img alt="Atlantic Transect Station location map" src="https://datadocs.bco-dmo.org/d2/US_GEOTRACES/AtlanticSection/GNAT_stationPlan_sm.jpg" style="width:350px" /></a></p>
<p>The section completion effort resumed again in November 2011 with KN204-01A,B (Figure 3).</p>
<p><a href="http://bcodata.whoi.edu//US_GEOTRACES/AtlanticSection/Submitted_Preliminary_Cruise_Report_for_Knorr_204-01.pdf" target="_blank">KN204-01A,B Cruise Report (PDF)</a></p>
<p><em>Figure 3. Station locations occupied on the US Geotraces North Atlantic Transect on the R/V Knorr in November 2011. [click on the image to view a larger version]</em><br />
<a href="http://bcodata.whoi.edu/US_GEOTRACES/AtlanticSection/KN204-01_Stations.png" target="_blank"><img alt="Atlantic Transect/Part 2 Station location map" src="https://datadocs.bco-dmo.org/d2/US_GEOTRACES/AtlanticSection/KN204-01_Stations.png" style="width:350px" /></a></p>
<p>Data from the North Atlantic Transect cruises are available under the Datasets heading below, and consensus values for the SAFe and North Atlantic GEOTRACES Reference Seawater Samples are available from the GEOTRACES Program Office: <a href="http://www.geotraces.org/science/intercalibration/322-standards-and-reference-materials?acm=455_215" target="_blank">Standards and Reference Materials</a></p>
<p><strong>ADCP data</strong> are available from the Currents ADCP group at the University of Hawaii at the links below:<br />
<a href="http://currents.soest.hawaii.edu/uhdas_adcp/year2010.html#kn199_4" target="_blank">KN199-04</a> (leg 1 of 2010 cruise; Lisbon to Cape Verde)<br />
<a href="http://currents.soest.hawaii.edu/uhdas_adcp/year2010.html#kn199_5" target="_blank">KN199-05</a> (leg 2 of 2010 cruise; Cape Verde to Charleston, NC)<br />
<a href="http://currents.soest.hawaii.edu/uhdas_adcp/year2011.html#kn204_01" target="_blank">KN204-01A</a> (part 1 of 2011 cruise; Woods Hole, MA to Bermuda)<br />
<a href="http://currents.soest.hawaii.edu/uhdas_adcp/year2011.html#kn204_02" target="_blank">KN204-01B</a> (part 2 of 2011 cruise; Bermuda to Cape Verde)</p>
U.S. GEOTRACES NAT
largerWorkCitation
project
eng; USA
oceans
Subtropical northern Atlantic Ocean
-69.808
-9.663
17.35
39.695
2010-10-16
2011-12-09
Subtropical western and eastern North Atlantic Ocean (GA03)
0
BCO-DMO catalogue of parameters from Water-column total Thorium-234 and Uranium-238 from R/V Knorr cruises KN199-04 and KN204-01 in the Subtropical northern Atlantic Ocean from 2010-2011 (U.S. GEOTRACES NAT 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/31588.rdf
Name: cruise_id
Units: text
Description: <p>Official cruise identifier e.g. KN199-04 = R/V Knorr cruise number 199-04.</p>
http://lod.bco-dmo.org/id/dataset-parameter/31589.rdf
Name: cruise_part
Units: text
Description: <p>Part of cruise. For KN204-01:<br /><br />
A = 11/6/2011 to 11/18/2011 (Woods Hole to Bermuda)<br /><br />
B = 11/19/2011 to 12/11/2011 (Bermuda to Praia, Cabo Verde)</p>
http://lod.bco-dmo.org/id/dataset-parameter/31590.rdf
Name: station_GEOTRC
Units: unitless
Description: <p>GEOTRACES station number; ranges from 1 through 12 for KN199-04 and 1 through 24 for KN204-01. Stations 7 and 9 were skipped on KN204-01. PI-supplied values were identical to those in the<br />
intermediate US GEOTRACES master file. Originally submitted as 'Station', this parameter name has been changed to conform to BCO-DMO's GEOTRACES naming conventions.</p>
http://lod.bco-dmo.org/id/dataset-parameter/31591.rdf
Name: lat
Units: decimal degrees
Description: <p>Latitude. Positive = North.</p>
http://lod.bco-dmo.org/id/dataset-parameter/31592.rdf
Name: lon
Units: decimal degrees
Description: <p>Longitude. Negative = West.</p>
http://lod.bco-dmo.org/id/dataset-parameter/31593.rdf
Name: event
Units: unitless
Description: <p>GEOTRACES event number; provided in original data submission.</p>
http://lod.bco-dmo.org/id/dataset-parameter/31594.rdf
Name: cast_GEOTRC
Units: unitless
Description: <p>Cast identifier, numbered consecutively within a station. PI-supplied values were identical to those in the intermediate US GEOTRACES master file. Originally submitted as 'Cast', <br />this parameter name has been changed to conform to BCO-DMO's GEOTRACES naming conventions.</p>
http://lod.bco-dmo.org/id/dataset-parameter/31595.rdf
Name: month_gmt
Units: unitless
Description: <p>2-digit month of year (GMT). in the format mm (01 to 12)</p>
http://lod.bco-dmo.org/id/dataset-parameter/31596.rdf
Name: day_gmt
Units: unitless
Description: <p>2-digit day of month (GMT). in the format dd (01 to 31)</p>
http://lod.bco-dmo.org/id/dataset-parameter/31597.rdf
Name: year
Units: unitless
Description: <p>4-digit year. in the format YYYY</p>
http://lod.bco-dmo.org/id/dataset-parameter/31598.rdf
Name: time_gmt
Units: unitless
Description: <p>Time (GMT); 24-hour clock. in the format HHMM</p>
http://lod.bco-dmo.org/id/dataset-parameter/31599.rdf
Name: bottle
Units: unitless
Description: <p>Bottle number; provided in original data submission.</p>
http://lod.bco-dmo.org/id/dataset-parameter/31600.rdf
Name: sample_GEOTRC
Units: unitless
Description: <p>Unique identifying number for US GEOTRACES samples; ranges from 5033 to 6078 for KN199-04 and from 6112 to 8148 for KN204-01. PI-supplied values were identical to those in the <br />intermediate US GEOTRACES master file. Originally submitted as 'Geotraces #', this parameter name has been changed to conform to BCO-DMO's GEOTRACES naming conventions.</p>
http://lod.bco-dmo.org/id/dataset-parameter/31601.rdf
Name: depth_n
Units: meters
Description: <p>Nominal sample depth.</p>
http://lod.bco-dmo.org/id/dataset-parameter/31602.rdf
Name: depth
Units: meters
Description: <p>Actual sample depth; provided in original data submission.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32087.rdf
Name: U238
Units: dpm/Liter
Description: <p>Total Uranium-238 concentration. Includes dissolved + particulate (though particulate fraction is very small).</p>
http://lod.bco-dmo.org/id/dataset-parameter/32088.rdf
Name: U238_unc
Units: dpm/Liter
Description: <p>U238 uncertainty. Derived from the uncertainty in the relationship in Owens et al. (2011).</p>
http://lod.bco-dmo.org/id/dataset-parameter/32089.rdf
Name: Th234_tot
Units: dpm/Liter
Description: <p>Thorium-234 concentration.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32090.rdf
Name: Th_234_tot_unc
Units: dpm/Liter
Description: <p>Th234 uncertainty. Derived from counting statistics.</p>
http://lod.bco-dmo.org/id/dataset-parameter/32091.rdf
Name: q_flag
Units: unitless
Description: <p>Quality flag:<br />
1 = Good<br />
2 = Questionable<br />
3 = Bad</p>
http://lod.bco-dmo.org/id/dataset-parameter/33195.rdf
Name: depth_GEOTRC_CTD
Units: meters
Description: <p>Observation/sample depth in meters, calculated from CTD pressure. Values were added from the intermediate US GEOTRACES master file (see Processing Description).</p>
http://lod.bco-dmo.org/id/dataset-parameter/33196.rdf
Name: event_GEOTRC
Units: unitless
Description: <p>Unique identifying number for US GEOTRACES sampling events; ranges from 2001 to 2225 for KN199-04 events and from 3001 to 3282 for KN204-01 events. <br />Values were added from the intermediate US GEOTRACES master file (see Processing Description).</p>
http://lod.bco-dmo.org/id/dataset-parameter/33197.rdf
Name: sample_bottle_GEOTRC
Units: unitless
Description: <p>Unique identification numbers given to samples taken from bottles; ranges from 1 to 24; often used synonymously with bottle number.<br /> Values were added from the intermediate US GEOTRACES master file (see Processing Description). </p>
http://lod.bco-dmo.org/id/dataset-parameter/33198.rdf
Name: bottle_GEOTRC
Units: unitless
Description: <p>Alphanumeric characters identifying bottle type (e.g., NIS representing Niskin and GF representing GOFLO) and position on a CTD rosette.<br /> Values were added from the intermediate US GEOTRACES master file (see Processing Description).</p>
http://lod.bco-dmo.org/id/dataset-parameter/33199.rdf
Name: Cast_ISO_DateTime_UTC
Units: yyyy-MM-dd'T'HH:mm:ss.SS'Z'
Description: <p>Cast date/time (UTC) formatted to ISO8601 standard. T indicates start of time string; Z indicates UTC. Calculated from original date and time fields.</p>
http://lod.bco-dmo.org/id/dataset-parameter/33200.rdf
Name: BTL_ISO_DateTime_UTC
Units: unitless
Description: <p>Date and time (UTC) variable recorded at the bottle sampling time in ISO compliant format. Values were added from the intermediate US GEOTRACES master file (see Processing Description).<br />
This standard is based on ISO 8601:2004(E) and takes on the following form: 2009-08-30T14:05:00[.xx]Z (UTC time)</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
90114
https://darchive.mblwhoilibrary.org/bitstream/1912/25590/1/dataset-3836_gt10-11-th234totalandu238__v2.tsv
download
https://doi.org/10.26008/1912/bco-dmo.3836.2
download
onLine
dataset
<p><strong>Uranium-238</strong><br />
Value and uncertainty from equation derived in Owens et al. (2011)<br />
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; U-238 (dpm/L) = (Salinity * 0.0786) - 0.315<br />
Salinity was measured onboard the ship by the Scripps Ocean Data Facility.</p>
<p><strong>Thorium-234</strong><br />
Determined by the widely-adopted 4 L method. Shallow (&lt; 1000 m) samples were collected from the SIO ODF Rosette and deep samples (&gt;1000 m) were collected from Niskin bottles hung above in situ pumps. Data are decay corrected to the mid-point time between when bottles 1 and 12 were fired for shallow casts and when the messenger was dropped for deep cast. All surface samples were collected using a deck-mounted pump (denoted as bottle 13). All data have been recovery-corrected using the Th-230/Th-229 recovery method (see references below) to account for any loss of sample material during processing. All samples were analyzed using RISO Laboratory Anti-coincidence Beta Counters, using a helium/1% butane mixture. Overall method efficiency was determined by minimizing the percent difference between mean U-238 and Th-234 values for samples from &gt;1000 m to &gt; 1000 m from the bottom (44.5 % for KN 199-4 and 46.4 % for KN 204-01a and KN 204-01b).</p>
Specified by the Principal Investigator(s)
<p>Data were flagged with quality indicators: 1 = Good; 2 = Questionable; 3 = Bad.</p>
<p>BCO-DMO made the following modifications:<br />
- Parameter names have been modified to conform with BCO-DMO naming conventions.<br />
- cruise_part was separated from the official cruise ID for cruise KN204-01.<br />
- Added Cast_ISO_DateTime_UTC from the original cast dates and times.</p>
<p><strong>Additional GEOTRACES Processing:</strong><br />
After the data were submitted to the International Data Management Office, BODC, the office noticed that important identifying information was missing in many datasets. With the agreement of BODC and the US GEOTRACES lead PIs, BCO-DMO added standard US GEOTRACES information, such as the US GEOTRACES event number, to each submitted dataset lacking this information. To accomplish this, BCO-DMO compiled a 'master' dataset composed of the following parameters: station_GEOTRC, cast_GEOTRC (bottle and pump data only), event_GEOTRC, sample_GEOTRC, sample_bottle_GEOTRC (bottle data only), bottle_GEOTRC (bottle data only), depth_GEOTRC_CTD (bottle data only), depth_GEOTRC_CTD_rounded (bottle data only), BTL_ISO_DateTime_UTC (bottle data only), and GeoFish_id (GeoFish data only). This added information will facilitate subsequent analysis and inter comparison of the datasets.<br />
<br />
Bottle parameters in the master file were taken from the GT-C_Bottle_GT10, GT-C_Bottle_GT11, ODF_Bottle_GT10, and ODF_Bottle_GT11 datasets. Non-bottle parameters, including those from GeoFish tows, Aerosol sampling, and McLane Pumps, were taken from the Event_Log_GT10 and Event_Log_GT11 datasets. McLane pump cast numbers missing in event logs were taken from the Particulate Th-234 dataset submitted by Ken Buesseler.<br />
<br />
A standardized BCO-DMO method (called "join") was then used to merge the missing parameters to each US GEOTRACES dataset, most often by matching on sample_GEOTRC or on some unique combination of other parameters.<br />
<br />
If the master parameters were included in the original data file and the values did not differ from the master file, the original data columns were retained and the names of the parameters were changed from the PI-submitted names to the standardized master names. If there were differences between the PI-supplied parameter values and those in the master file, both columns were retained. If the original data submission included all of the master parameters, no additional columns were added, but parameter names were modified to match the naming conventions of the master file.<br />
<br />
See the dataset parameters documentation for a description of which parameters were supplied by the PI and which were added via the join method.</p>
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
Niskin bottle
Niskin bottle
PI Supplied Instrument Name: Niskin bottle PI Supplied Instrument Description:Shallow samples for Th-234 were taken using the SIO ODF Rosette (12 30-Liter Niskin bottles). Deep samples were taken using Niskin bottles hung above in situ pumps. 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/
Riso Laboratory Anti-coincidence Beta Counters
Riso Laboratory Anti-coincidence Beta Counters
PI Supplied Instrument Name: Riso Laboratory Anti-coincidence Beta Counters PI Supplied Instrument Description:Th-234 samples were analyzed using a Riso Anti-coinicidence Beta Counter using a helium/1% butane mixture. Instrument Name: Riso Laboratory Anti-coincidence Beta Counter Instrument Short Name:Riso Beta Counter Instrument Description: Low-level beta detectors manufactured by Riso (now Nutech) in Denmark. These instruments accept samples that can be mounted on a 25mm filter holder. These detectors have very low backgrounds, 0.17 counts per minute, and can have counting efficiencies as high as 55%.
Typically used in laboratory analyses. Designed to measure low levels of beta particle emission. The systems work on the principle of anticoincidence.
Cruise: KN199-04
KN199-04
R/V Knorr
Community Standard Description
International Council for the Exploration of the Sea
R/V Knorr
vessel
KN199-04
William J. Jenkins
Woods Hole Oceanographic Institution
http://bcodata.whoi.edu/US_GEOTRACES/AtlanticSection/Cruise_Report_for_Knorr_199_Final_v3.pdf
Report describing KN199-04
Cruise: KN204-01
KN204-01
R/V Knorr
Community Standard Description
International Council for the Exploration of the Sea
R/V Knorr
vessel
KN204-01
Edward A. Boyle
Massachusetts Institute of Technology
http://bcodata.whoi.edu/US_GEOTRACES/AtlanticSection/STS_Prelim_GT11_Doc.pdf
Report describing KN204-01
R/V Knorr
Community Standard Description
International Council for the Exploration of the Sea
R/V Knorr
vessel