http://lod.bco-dmo.org/id/dataset/883797
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
2022-11-16
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Dissolved and total water column 210Po and 210Pb from samples collected on Leg 2 (Hilo, HI to Papeete, French Polynesia) of the US GEOTRACES Pacific Meridional Transect (PMT) cruise (GP15, RR1815) on R/V Roger Revelle from October to November 2018
2023-01-31
publication
2023-01-31
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2023-01-31
publication
https://doi.org/10.26008/1912/bco-dmo.883797.1
J. Kirk Cochran
Stony Brook University - SoMAS
principalInvestigator
Mark Stephens
Florida International 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: Cochran, J. K., Stephens, M. (2023) Dissolved and total water column 210Po and 210Pb from samples collected on Leg 2 (Hilo, HI to Papeete, French Polynesia) of the US GEOTRACES Pacific Meridional Transect (PMT) cruise (GP15, RR1815) on R/V Roger Revelle from October to November 2018. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2023-01-31 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.883797.1 [access date]
GP15 Water Column 210Po and 210Pb - Dissolved and Total - Leg 2 Dataset Description: Methods and Sampling: <p>Water samples for dissolved 210Pb and 210Po were collected at 12 stations along the 152°W meridional transect and processed on board through the initial plating of Po. For each sample, 10 liters (L) of water were collected using the Scripps Ocean Data Facility (ODF) rosette. Samples were filtered through Acropak filter cartridges (0.8/0.2 micrometers (um)) and acidified to pH ~2 with 40 milliliters (mL) of 6N HCl. They were then shaken well to homogenize. Surface samples were taken by the "fish" and were not filtered upon collection. Thus, the 210Po and 210Pb activities in samples marked "0" depth are total activities. At sea, samples were taken through the initial plating of 210Po. To each sample, iron (10 milligrams Fe, as FeCl₃ solution) was added along with 10 milligrams (mg) of Pb and 1.76 disintegrations pre minute (dpm) of 209Po tracer (NIST 4326a). The mixture was shaken and left for 24 hours for tracer/carrier equilibration. Iron hydroxide was precipitated by adding concentrated NH₄OH to raise the pH to 8-9. The Fe(OH)₃ precipitate was allowed to settle for 24 hours, after which the sample was filtered through a 1.2 um Versapor filter. The precipitate was dissolved in 20 mL of 6N HCl, and the solution was diluted with DI water to make 80 mL of 1.5 N HCl. Ascorbic acid was added to the 1.5N HCl solution and polonium was plated onto silver planchets (Flynn, 1968; Lee et al., 2014) mounted in Teflon planchet-holders fitted with magnetic stir bars. Plating proceeded on magnetic-stirrer hot plates heated to 80°C for 3 hours. Planchets were then removed from solution, rinsed, and allowed to dry. Dried Po-plated planchets were returned to the shore-based laboratories (Stony Brook University; Florida International University) for alpha counting using Canberra/Mirion passivated implanted planar silicon (PIPS) detectors.</p>
<p>The residual plating solutions were transferred to 125 mL polycarbonate bottles for transport back to Stony Brook University. Due to the long transit back from the Pacific (~3 months), it was decided to eliminate any residual 209Po and 210Po left in the sample after plating by suspending a piece of scrap silver in the sample for 5 days. The silver was then removed, with the time of removal noted. An additional aliquot of 209Po was added to the stored samples, and after ~6 months of storage in the shore-based laboratory (Stony Brook University), Po was plated again using the procedure described above. The 210Po activity obtained at the second plating was then used to back-calculate the activity of 210Pb in the sample at the time of sampling. The calculations outlined by Rigaud et al. (2013) were followed to calculate both the initial 210Po and 210Pb activities.</p>
<p>The scrap silver clean-up step was checked upon sample return to the laboratory by replating several samples without any additional 209Po added. It was found that 5.0 ± 1.6% of the initial Po remained, and correction was made to the calculation of 210Pb activities to account for residual 210Po and 209Po. Additionally, to check the clean-up procedure, two samples were purified by ion exchange after their return to the lab. Agreement was excellent (within 5%).</p>
<p>Recovery of the Pb carrier added to the samples before precipitation was determined after the initial 210Po plating. For this purpose, an aliquot of each stored solution was taken for total Pb yield by Atomic Absorption Spectroscopy or Inductively-Coupled-Plasma Mass Spectroscopy.</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1736591 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1736591
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1736612 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1736612
completed
J. Kirk Cochran
Stony Brook University - SoMAS
631-632-8733
School of Marine & Atmospheric Sciences
Stony Brook
NY
11794-5000
USA
kirk.cochran@stonybrook.edu
pointOfContact
Mark Stephens
Florida International University
305-348-8354
10555 W Flagler Street
Miami
FL
33174
USA
mstephen@fiu.edu
pointOfContact
asNeeded
Dataset Version: 1
Unknown
Station_ID
Start_ISO_DateTime_UTC
Start_Latitude
Start_Longitude
Event_ID
Sample_ID
Sample_Depth
Pb_210_T_CONC_BOTTLE_rfjabp
SD1_Pb_210_T_CONC_BOTTLE_rfjabp
Flag_Pb_210_T_CONC_BOTTLE_rfjabp
Po_210_T_CONC_BOTTLE_vapogm
SD1_Po_210_T_CONC_BOTTLE_vapogm
Flag_Po_210_T_CONC_BOTTLE_vapogm
Pb_210_D_CONC_BOTTLE_kaxx2u
SD1_Pb_210_D_CONC_BOTTLE_kaxx2u
Flag_Pb_210_D_CONC_BOTTLE_kaxx2u
Po_210_D_CONC_BOTTLE_g7hxey
SD1_Po_210_D_CONC_BOTTLE_g7hxey
Flag_Po_210_D_CONC_BOTTLE_g7hxey
theme
None, User defined
station
ISO_DateTime_UTC
latitude
longitude
event
sample identification
depth
radioactive_isotope_activity
quality flag
featureType
BCO-DMO Standard Parameters
Niskin bottle
Spectrometer
instrument
BCO-DMO Standard Instruments
RR1815
service
Deployment Activity
Hilo, HI to Papeete, French Polynesia
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
US GEOTRACES Pacific Meridional Transect (GP15)
http://www.geotraces.org/
US GEOTRACES Pacific Meridional Transect (GP15)
<p>A 60-day research cruise took place in 2018 along a transect form Alaska to Tahiti at 152° W. A description of the project titled "<em>Collaborative Research: Management and implementation of the US GEOTRACES Pacific Meridional Transect</em>", funded by NSF, is below. Further project information is available on the <a href="https://www.geotraces.org/" target="_blank">US GEOTRACES website</a> and on the <a href="https://geotraces-gp15.com/" target="_blank">cruise blog</a>. A detailed <a href="https://datadocs.bco-dmo.org/docs/geotraces/GEOTRACES_PMT/casciotti/data_docs/GP15_Cruise_Report_with_ODF_Report.pdf" target="_blank">cruise report is also available</a> as a PDF.</p>
<p><em>Description from NSF award abstract:</em><br />
GEOTRACES is a global effort in the field of Chemical Oceanography in which the United States plays a major role. The goal of the GEOTRACES program is to understand the distributions of many elements and their isotopes in the ocean. Until quite recently, these elements could not be measured at a global scale. Understanding the distributions of these elements and isotopes will increase the understanding of processes that shape their distributions and also the processes that depend on these elements. For example, many "trace elements" (elements that are present in very low amounts) are also important for life, and their presence or absence can play a vital role in the population of marine ecosystems. This project will launch the next major U.S. GEOTRACES expedition in the Pacific Ocean between Alaska and Tahiti. The award made here would support all of the major infrastructure for this expedition, including the research vessel, the sampling equipment, and some of the core oceanographic measurements. This project will also support the personnel needed to lead the expedition and collect the samples.</p>
<p>This project would support the essential sampling operations and infrastructure for the U.S. GEOTRACES Pacific Meridional Transect along 152° W to support a large variety of individual science projects on trace element and isotope (TEI) biogeochemistry that will follow. Thus, the major objectives of this management proposal are: (1) plan and coordinate a 60 day research cruise in 2018; (2) obtain representative samples for a wide variety of TEIs using a conventional CTD/rosette, GEOTRACES Trace Element Sampling Systems, and in situ pumps; (3) acquire conventional CTD hydrographic data along with discrete samples for salinity, dissolved oxygen, algal pigments, and dissolved nutrients at micro- and nanomolar levels; (4) ensure that proper QA/QC protocols are followed and reported, as well as fulfilling all GEOTRACES intercalibration protocols; (5) prepare and deliver all hydrographic data to the GEOTRACES Data Assembly Centre (via the US BCO-DMO data center); and (6) coordinate all cruise communications between investigators, including preparation of a hydrographic report/publication. This project would also provide baseline measurements of TEIs in the Clarion-Clipperton fracture zone (~7.5°N-17°N, ~155°W-115°W) where large-scale deep sea mining is planned. Environmental impact assessments are underway in partnership with the mining industry, but the effect of mining activities on TEIs in the water column is one that could be uniquely assessed by the GEOTRACES community. In support of efforts to communicate the science to a wide audience the investigators will recruit an early career freelance science journalist with interests in marine science and oceanography to participate on the cruise and do public outreach, photography and/or videography, and social media from the ship, as well as to submit articles about the research to national media. The project would also support several graduate students.</p>
U.S. GEOTRACES PMT
largerWorkCitation
project
Collaborative Research: Lead-210 and Polonium-210 as tracers for scavenging and export: GEOTRACES Pacific Meridional Section
https://osprey.bco-dmo.org/project/875069
Collaborative Research: Lead-210 and Polonium-210 as tracers for scavenging and export: GEOTRACES Pacific Meridional Section
<p><em>NSF Award Abstract:</em><br />
The goal of the international GEOTRACES program is to understand the distributions of trace chemical elements and their isotopes in the oceans. These chemical species play important roles in the ocean as nutrients, tracers of current and past oceanographic processes, and as contaminants from human activity. Their biogeochemical cycling has direct implications for research in such diverse areas as the carbon cycle, climate change, and ocean ecosystems. This project will use measurement of two natural radionuclides -- lead-210 and polonium-210 -- to provide important information about the rates of processes that affect trace elements and isotopes (TEIs) that will be measured during a U.S. GEOTRACES expedition in the Pacific Ocean in 2018. The research proposed here will address key tasks formulated within the GEOTRACES Science Plan.</p>
<p>Many processes in the ocean cannot be observed directly but tracers such as polonium-210 (half-life = 138 days) and lead-210 (half-life = 22.3 years) that have unique chemical properties and relevant decay timescales can be used to provide important constraints on their rates and pathways. The goals of this research are to: 1) use Pb-210, along with another project measuring Be-7, in aerosols and precipitation to characterize aerosol and TEI sources, 2) determine scavenging rates of particle-reactive TEIs through the water column using Po-210 and Pb-210, 3) use Po-210 / Pb-210 disequilibrium in the upper water column as a proxy for the sinking flux of particulate organic carbon (POC), and 4) use Pb-210as a tracer of the influence of hydrothermal processes on water column distributions of TEIs. This work will build on a database of Po/Pb distributions in the world ocean (and the Pacific Ocean, in particular) obtained through programs such as GEOSECS, GEOTRACES, and independent studies. A graduate student will be trained as part of this project. The lead investigator, Cochran, plans to incorporate information about GEOTRACES sampling strategies in the planning for a travelling exhibition on "The Oceans" through his adjunct appointment at the American Museum of Natural History (New York). Project partner Kadko plans to incorporate GEOTRACES work in an international graduate course through the Nippon Foundation, Partnership for Observation of the Global Oceans Center of Excellence.</p>
PMT Lead-210 and Polonium-210
largerWorkCitation
project
eng; USA
oceans
Hilo, HI to Papeete, French Polynesia
-155.2579
-151.9892
-20
18.9066
2018-10-25
2018-11-23
Pacific Meridional Transect along 152W (GP15)
0
BCO-DMO catalogue of parameters from Dissolved and total water column 210Po and 210Pb from samples collected on Leg 2 (Hilo, HI to Papeete, French Polynesia) of the US GEOTRACES Pacific Meridional Transect (PMT) cruise (GP15, RR1815) on R/V Roger Revelle from October to November 2018
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/888368.rdf
Name: Station_ID
Units: unitless
Description: <p>Station number</p>
http://lod.bco-dmo.org/id/dataset-parameter/888369.rdf
Name: Start_ISO_DateTime_UTC
Units: unitless
Description: <p>Date and time (UTC) at start of sample collection in ISO8601 format</p>
http://lod.bco-dmo.org/id/dataset-parameter/888370.rdf
Name: Start_Latitude
Units: degrees North
Description: <p>Latitude at start of sample collection</p>
http://lod.bco-dmo.org/id/dataset-parameter/888371.rdf
Name: Start_Longitude
Units: degrees East
Description: <p>Longitude at start of sample collection</p>
http://lod.bco-dmo.org/id/dataset-parameter/888372.rdf
Name: Event_ID
Units: unitless
Description: <p>Event number</p>
http://lod.bco-dmo.org/id/dataset-parameter/888373.rdf
Name: Sample_ID
Units: unitless
Description: <p>GEOTRACES sample number</p>
http://lod.bco-dmo.org/id/dataset-parameter/888374.rdf
Name: Sample_Depth
Units: meters (m)
Description: <p>Sample depth</p>
http://lod.bco-dmo.org/id/dataset-parameter/888375.rdf
Name: Pb_210_T_CONC_BOTTLE_rfjabp
Units: milliBecquerels per kilogram of water (mBq/kg)
Description: <p>210Pb of unfiltered surface water sample</p>
http://lod.bco-dmo.org/id/dataset-parameter/888376.rdf
Name: SD1_Pb_210_T_CONC_BOTTLE_rfjabp
Units: milliBecquerels per kilogram of water (mBq/kg)
Description: <p>Uncertainty as 1 sigma standard deviation for Pb_210_T_CONC_BOTTLE_rfjabp</p>
http://lod.bco-dmo.org/id/dataset-parameter/888377.rdf
Name: Flag_Pb_210_T_CONC_BOTTLE_rfjabp
Units: unitless
Description: <p>Quality flag for Pb_210_T_CONC_BOTTLE_rfjabp (1 = "good data")</p>
http://lod.bco-dmo.org/id/dataset-parameter/888378.rdf
Name: Po_210_T_CONC_BOTTLE_vapogm
Units: milliBecquerels per kilogram of water (mBq/kg)
Description: <p>210Po on unfiltered surface water sample</p>
http://lod.bco-dmo.org/id/dataset-parameter/888379.rdf
Name: SD1_Po_210_T_CONC_BOTTLE_vapogm
Units: milliBecquerels per kilogram of water (mBq/kg)
Description: <p>Uncertainty as 1 sigma standard deviation for Po_210_T_CONC_BOTTLE_vapogm</p>
http://lod.bco-dmo.org/id/dataset-parameter/888380.rdf
Name: Flag_Po_210_T_CONC_BOTTLE_vapogm
Units: unitless
Description: <p>Quality flag for Po_210_T_CONC_BOTTLE_vapogm (1 = "good data")</p>
http://lod.bco-dmo.org/id/dataset-parameter/888381.rdf
Name: Pb_210_D_CONC_BOTTLE_kaxx2u
Units: milliBecquerels per kilogram of water (mBq/kg)
Description: <p>210Pb activity of filtered water sample</p>
http://lod.bco-dmo.org/id/dataset-parameter/888382.rdf
Name: SD1_Pb_210_D_CONC_BOTTLE_kaxx2u
Units: milliBecquerels per kilogram of water (mBq/kg)
Description: <p>Uncertainty as 1 sigma standard deviation for Pb_210_D_CONC_BOTTLE_kaxx2u</p>
http://lod.bco-dmo.org/id/dataset-parameter/888383.rdf
Name: Flag_Pb_210_D_CONC_BOTTLE_kaxx2u
Units: unitless
Description: <p>Quality flag for Pb_210_D_CONC_BOTTLE_kaxx2u (1 = "good data")</p>
http://lod.bco-dmo.org/id/dataset-parameter/888384.rdf
Name: Po_210_D_CONC_BOTTLE_g7hxey
Units: milliBecquerels per kilogram of water (mBq/kg)
Description: <p>210Po activity of filtered water sample</p>
http://lod.bco-dmo.org/id/dataset-parameter/888385.rdf
Name: SD1_Po_210_D_CONC_BOTTLE_g7hxey
Units: milliBecquerels per kilogram of water (mBq/kg)
Description: <p>Uncertainty as 1 sigma standard deviation for Po_210_D_CONC_BOTTLE_g7hxey</p>
http://lod.bco-dmo.org/id/dataset-parameter/888386.rdf
Name: Flag_Po_210_D_CONC_BOTTLE_g7hxey
Units: unitless
Description: <p>Quality flag for Po_210_D_CONC_BOTTLE_g7hxey (1 = "good data")</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
59658
https://darchive.mblwhoilibrary.org/server/api/core/bitstreams/8676fa72-7d3d-5c19-9bac-4c7297efa2cb/content
download
https://doi.org/10.26008/1912/bco-dmo.883797.1
download
onLine
dataset
<p>Water samples for dissolved 210Pb and 210Po were collected at 12 stations along the 152°W meridional transect and processed on board through the initial plating of Po. For each sample, 10 liters (L) of water were collected using the Scripps Ocean Data Facility (ODF) rosette. Samples were filtered through Acropak filter cartridges (0.8/0.2 micrometers (um)) and acidified to pH ~2 with 40 milliliters (mL) of 6N HCl. They were then shaken well to homogenize. Surface samples were taken by the "fish" and were not filtered upon collection. Thus, the 210Po and 210Pb activities in samples marked "0" depth are total activities. At sea, samples were taken through the initial plating of 210Po. To each sample, iron (10 milligrams Fe, as FeCl₃ solution) was added along with 10 milligrams (mg) of Pb and 1.76 disintegrations pre minute (dpm) of 209Po tracer (NIST 4326a). The mixture was shaken and left for 24 hours for tracer/carrier equilibration. Iron hydroxide was precipitated by adding concentrated NH₄OH to raise the pH to 8-9. The Fe(OH)₃ precipitate was allowed to settle for 24 hours, after which the sample was filtered through a 1.2 um Versapor filter. The precipitate was dissolved in 20 mL of 6N HCl, and the solution was diluted with DI water to make 80 mL of 1.5 N HCl. Ascorbic acid was added to the 1.5N HCl solution and polonium was plated onto silver planchets (Flynn, 1968; Lee et al., 2014) mounted in Teflon planchet-holders fitted with magnetic stir bars. Plating proceeded on magnetic-stirrer hot plates heated to 80°C for 3 hours. Planchets were then removed from solution, rinsed, and allowed to dry. Dried Po-plated planchets were returned to the shore-based laboratories (Stony Brook University; Florida International University) for alpha counting using Canberra/Mirion passivated implanted planar silicon (PIPS) detectors.</p>
<p>The residual plating solutions were transferred to 125 mL polycarbonate bottles for transport back to Stony Brook University. Due to the long transit back from the Pacific (~3 months), it was decided to eliminate any residual 209Po and 210Po left in the sample after plating by suspending a piece of scrap silver in the sample for 5 days. The silver was then removed, with the time of removal noted. An additional aliquot of 209Po was added to the stored samples, and after ~6 months of storage in the shore-based laboratory (Stony Brook University), Po was plated again using the procedure described above. The 210Po activity obtained at the second plating was then used to back-calculate the activity of 210Pb in the sample at the time of sampling. The calculations outlined by Rigaud et al. (2013) were followed to calculate both the initial 210Po and 210Pb activities.</p>
<p>The scrap silver clean-up step was checked upon sample return to the laboratory by replating several samples without any additional 209Po added. It was found that 5.0 ± 1.6% of the initial Po remained, and correction was made to the calculation of 210Pb activities to account for residual 210Po and 209Po. Additionally, to check the clean-up procedure, two samples were purified by ion exchange after their return to the lab. Agreement was excellent (within 5%).</p>
<p>Recovery of the Pb carrier added to the samples before precipitation was determined after the initial 210Po plating. For this purpose, an aliquot of each stored solution was taken for total Pb yield by Atomic Absorption Spectroscopy or Inductively-Coupled-Plasma Mass Spectroscopy.</p>
Specified by the Principal Investigator(s)
<p><strong>Data Processing:</strong><br />
Calculation of radioactivites (disintegrations pre minute - dpm - or Becquerels - Bq) from count rates measured in the alpha spectrometers were made using the procedure outlined in Rigaud et al. (2013).</p>
<p>Quality flags were applied following the GEOTRACES flag definitions (<a href="https://www.geotraces.org/geotraces-quality-flag-policy/" target="_blank">https://www.geotraces.org/geotraces-quality-flag-policy/</a>) where 1 = "good data".</p>
<p><strong>BCO-DMO Processing:</strong><br />
- renamed fields to comply with BCO-DMO naming conventions;<br />
- created ISO 8601 date-time field and removed original (separate) date and time columns;<br />
- removed end date, end time, end lat, and end lon (all empty);<br />
- moved rows for station 18.3 from Leg 2 file to Leg 1;<br />
- replaced "11..00" with "11.00" in Start_Latitude column.</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
PI Supplied Instrument Name: PI Supplied Instrument Description:For each sample, 10 liters (L) of water were collected using the Scripps Ocean Data Facility (ODF) 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/
PI Supplied Instrument Name: PI Supplied Instrument Description:210Po and 210Pb activities were measured on Canberra passivated implanted planar silicon (PIPS) detectors coupled to a Mirion Alpha Analyst™ alpha spectrometer (Stony Brook University) or Ortec Alpha System (Florida International University). Instrument Name: Spectrometer Instrument Short Name:Spectrometer Instrument Description: A spectrometer is an optical instrument used to measure properties of light over a specific portion of the electromagnetic spectrum. Community Standard Description: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0460/
Cruise: RR1815
RR1815
R/V Roger Revelle
Community Standard Description
International Council for the Exploration of the Sea
R/V Roger Revelle
vessel
RR1815
Gregory A. Cutter
Old Dominion University
https://datadocs.bco-dmo.org/docs/geotraces/GEOTRACES_PMT/casciotti/data_docs/GP15_Cruise_Report_with_ODF_Report.pdf
Report describing RR1815
R/V Roger Revelle
Community Standard Description
International Council for the Exploration of the Sea
R/V Roger Revelle
vessel