http://lod.bco-dmo.org/id/dataset/749397
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
2018-11-07
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Selenium observations from the R/V Kilo Moana in the tropical Pacific Ocean from October 2011
2018-11-09
publication
2018-11-09
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2021-05-19
publication
https://doi.org/10.26008/1912/bco-dmo.749397.1
Robert P. Mason
University of Connecticut
principalInvestigator
William Fitzgerald
University of Connecticut
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: Mason, R., Fitzgerald, W. (2021) Selenium observations from the R/V Kilo Moana in the tropical Pacific Ocean from October 2011. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2018-11-09 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.749397.1 [access date]
The data include profile and underway measurements of total dissolved selenium and particulate selenium for 9 stations occupied in the tropical Pacific Ocean in 2011. Dataset Description: <p>The data include measurements of total dissolved selenium and particulate selenium with depth for 9 stations occupied in the tropical Pacific Ocean in 2011, and total dissolved selenium in surface waters collected while the ship was underway between stations.&nbsp;</p> Methods and Sampling: <p>Water samples were collected using a trace metal clean rosette from eight stations occupied in the tropical North and South Pacific during the Metzyme cruise from Hawaii to Samoa (1 to 24 October 2011; 20°N to 15°S). Surface water samples were obtained using water collected at 5-10 m depth from the ship’s underway sampling system. Particulate samples were collected using McLane in-situ pumps from six stations occupied during the cruise at depths up to 900 m, with ~1000 L filtered per deployment. Water was filtered on board (0.2 μm), acidified to 0.5% HCl (trace metal grade) and transported to the University of Connecticut for analysis.&nbsp; All samples were stored refrigerated (4C) and under dark conditions prior to analysis.<br />
Dissolved Se speciation was determined within six months of collection following established methods (Cutter and Cutter, 2001; Cutter and Bruland, 1984). The method relies on hydride generation of hydrogen selenide using sodium borohydride. Total dissolved Se was determined by boiling samples in 4M HCl for 15 min to convert all forms to Se(IV), followed by hydride generation step using sodium borohydrate. A PS Analytical Millennium Excalibur instrument equipped with a specific high discharge Se lamp that relies on atomic fluorescence was used for detection. The particulate samples were quantified after microwave digestion (800 W microwave; 20 min at 10% power, then 20 min at 20% power to slowly increase temperature). Filters were placed in Teflon bombs with 5 mL of a 10:1 concentrated HNO3:H2SO4 mixture (Zhao et al., 2010). The volume filtered was determined from the total volume filtered by the in situ pump and the fraction of the filter that was analyzed.</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1130711 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1130711
completed
Robert P. Mason
University of Connecticut
860-405-9129
Department of Marine Sciences
Groton
CT
06340
USA
Robert.mason@uconn.edu
pointOfContact
William Fitzgerald
University of Connecticut
860-405-9153
Department of Marine Sciences
Groton
CT
06340
USA
william.fitzgerald@uconn.edu
pointOfContact
asNeeded
Dataset Version: 1
Unknown
Station
Latitude
Longitude
Depth
TDSe
TDSe_Stdev
Part_Se
Date
Arrival_Time
PS Analytical Millennium Excalibur
theme
None, User defined
station
latitude
longitude
depth
trace element concentration
date
time of day
featureType
BCO-DMO Standard Parameters
Spectrometer
instrument
BCO-DMO Standard Instruments
KM1128
service
Deployment Activity
tropical North Pacific along 150 degrees West from 18 degrees North to the equator
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: Interwoven biogeochemical cycles and biological transformations of mercury and selenium in the upper ocean
https://osprey.bco-dmo.org/project/749366
Collaborative Research: Interwoven biogeochemical cycles and biological transformations of mercury and selenium in the upper ocean
<p><em>NSF Award Abstract:</em><br />
Researchers from the University of Connecticut, Woods Hole Oceanographic Institution, and Harvard University plan to address three questions related to the global biogeochemical mercury (Hg) and selenium (Se) cycles, namely (1) what are the abiotic and biotic mechanisms for formation of methylated Hg and Se compounds in the upper ocean?; (2) what is the role of photochemical reactions in air-sea exchange of Hg and Se?; and (3) how are the biogeochemical cycles of Hg and Se related? To attain their goal, the scientists will participate in a cruise of opportunity to the Tropical North Pacific, as well as carry out laboratory culture and controlled incubation experiments. Samples collected during the cruise will be used to determine the speciation of Hg and Se, as well as obtain measurements of photochemical status (i.e., UV, ozone, light levels, chemical (i.e., natural organic matter, redox metals), and biological (i.e., chlorophyll a, phytoplankton composition,proteomics, estimates of carbon mineralization) properties. The laboratory culture and controlled incubation experiments will be used to determine the specific pathways for Hg and Se compound formation and degradation, especially the role of photochemical transformations, as well as assess the importance of Se as a binding ligand for Hg in the marine environment. Lastly, the researchers will continue to develop the oceanic sub-model of the GEOS-Chem global biochemical Hg model to include the cycling of Se and will use the model to ascertain the importance of various processes of conversion and evasion in the global cycles of these two elements.</p>
<p>As regards broader impacts, this study has societal benefits because it would improve our understanding on how mercury enters seafood which impacts human health. Results from the research would be included in curriculum material. One graduate student from the University of Connecticut, one postdoc from Harvard University, and one graduate student from Woods Hole Oceanographic Institution would be supported and trained as part of the project.</p>
Mercury and Selenium
largerWorkCitation
project
eng; USA
oceans
tropical North Pacific along 150 degrees West from 18 degrees North to the equator
-174.378
-154.4
-15.0931
17.0273
2011-10-01
2011-10-24
Tropical North and South Pacific and equatorial region; cruise track from Hawaii to Tahiti
0
BCO-DMO catalogue of parameters from Selenium observations from the R/V Kilo Moana in the tropical Pacific Ocean from October 2011
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/749621.rdf
Name: Station
Units: unitless
Description: <p>identifier for the station</p>
http://lod.bco-dmo.org/id/dataset-parameter/749622.rdf
Name: Latitude
Units: decimal degrees
Description: <p>latitude in degrees North</p>
http://lod.bco-dmo.org/id/dataset-parameter/749623.rdf
Name: Longitude
Units: decimal degrees
Description: <p>longitude in degrees East</p>
http://lod.bco-dmo.org/id/dataset-parameter/749624.rdf
Name: Depth
Units: meters (m)
Description: <p>depth of observation</p>
http://lod.bco-dmo.org/id/dataset-parameter/749625.rdf
Name: TDSe
Units: nano Mole (nM)
Description: <p>total dissolved selenium</p>
http://lod.bco-dmo.org/id/dataset-parameter/749626.rdf
Name: TDSe_Stdev
Units: nano Mole (nM)
Description: <p>standard deviation of total dissolved selenium</p>
http://lod.bco-dmo.org/id/dataset-parameter/749627.rdf
Name: Part_Se
Units: pico Mole (pM)
Description: <p>Particulate selenium</p>
http://lod.bco-dmo.org/id/dataset-parameter/749628.rdf
Name: Date
Units: unitless
Description: <p>Date of observation in MM/DD/YY format</p>
http://lod.bco-dmo.org/id/dataset-parameter/749629.rdf
Name: Arrival_Time
Units: unitless
Description: <p>Time of observation in H:M AM/PM format</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
8845
https://darchive.mblwhoilibrary.org/bitstream/1912/27133/1/dataset-749397_selenium__v1.tsv
download
https://doi.org/10.26008/1912/bco-dmo.749397.1
download
onLine
dataset
<p>Water samples were collected using a trace metal clean rosette from eight stations occupied in the tropical North and South Pacific during the Metzyme cruise from Hawaii to Samoa (1 to 24 October 2011; 20°N to 15°S). Surface water samples were obtained using water collected at 5-10 m depth from the ship’s underway sampling system. Particulate samples were collected using McLane in-situ pumps from six stations occupied during the cruise at depths up to 900 m, with ~1000 L filtered per deployment. Water was filtered on board (0.2 μm), acidified to 0.5% HCl (trace metal grade) and transported to the University of Connecticut for analysis.&nbsp; All samples were stored refrigerated (4C) and under dark conditions prior to analysis.<br />
Dissolved Se speciation was determined within six months of collection following established methods (Cutter and Cutter, 2001; Cutter and Bruland, 1984). The method relies on hydride generation of hydrogen selenide using sodium borohydride. Total dissolved Se was determined by boiling samples in 4M HCl for 15 min to convert all forms to Se(IV), followed by hydride generation step using sodium borohydrate. A PS Analytical Millennium Excalibur instrument equipped with a specific high discharge Se lamp that relies on atomic fluorescence was used for detection. The particulate samples were quantified after microwave digestion (800 W microwave; 20 min at 10% power, then 20 min at 20% power to slowly increase temperature). Filters were placed in Teflon bombs with 5 mL of a 10:1 concentrated HNO3:H2SO4 mixture (Zhao et al., 2010). The volume filtered was determined from the total volume filtered by the in situ pump and the fraction of the filter that was analyzed.</p>
Specified by the Principal Investigator(s)
<p>BCO-DMO Processing Notes:</p>
<ul>
<li>Combined two excel spreasheets into one dataset with all observations organized by station and depth</li>
<li>added conventional header with dataset name, PI name, version date</li>
<li>modified parameter names to conform with BCO-DMO naming conventions</li>
<li>added the station identifier "Underway" and depth "surface" for the underway observations.</li>
</ul>
<p>&nbsp;</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
PS Analytical Millennium Excalibur
PS Analytical Millennium Excalibur
PI Supplied Instrument Name: PS Analytical Millennium Excalibur PI Supplied Instrument Description:PS Analytical Millennium Excalibur instrument equipped with a specific high discharge Se lamp that relies on atomic fluorescence for detection. 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: KM1128
KM1128
R/V Kilo Moana
Community Standard Description
International Council for the Exploration of the Sea
R/V Kilo Moana
vessel
KM1128
Carl Lamborg
Woods Hole Oceanographic Institution
R/V Kilo Moana
Community Standard Description
International Council for the Exploration of the Sea
R/V Kilo Moana
vessel