http://lod.bco-dmo.org/id/dataset/779098
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
2019-10-11
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Arsenic Speciation from the US GEOTRACES Arctic cruise (HLY1502, GN01) from August to October 2015
2019-10-11
publication
2019-10-11
revision
BCO-DMO Linked Data URI
2019-10-11
creation
http://lod.bco-dmo.org/id/dataset/779098
Gregory A. Cutter
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: Cutter, G. A. (2019) Arsenic Speciation from the US GEOTRACES Arctic cruise (HLY1502, GN01) from August to October 2015. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2019-10-11 [if applicable, indicate subset used]. http://lod.bco-dmo.org/id/dataset/779098 [access date]
Arsenic Speciation Depth Profiles Arsenic Speciation Dataset Description: <p>Data have been submitted to BCO-DMO and are currently being processed (2019-10-11).</p> Methods and Sampling: <p>0.45 µm filtered seawater samples from the GEOTRACES Carousel/GO-FLO bottles were placed into 500 mL Teflon FEP bottles, refrigerated, and analyzed within 24 hours of collection.</p>
<p>Arsenic speciation was determined using selective hydride generation, liquid nitrogen-cooled trapping, and then revolatilization and determination with gas chromatography/photoionization detection (Cutter et al., 1991; Cutter and Cutter, 2006). Calibration performed daily via the standard additions method, with a minimum of 4 additions of AsIII and AsV. The slope from the linear fit to these data was then applied to all samples for that day. Detection limits were 0.03 nmol/L for As(III) and As(V). Precision was better than 8% RSD. Dimethyl and monomethyl arsenic (DMAS and MMAs) were simultaneously determined using the total inorganic As procedures above, but using a different gas chromatography column (15% OV-3 on Chromasorb W/AW DMCS, 80/100 mesh; Cutter and Cutter, 2006)). Detection limit for the methylated As species were 0.01 nmol/L and the precision was 6% (RSD) at 0.1 nmol/L. Calibration was performed using the standard additions method with a minimum of 4 additions of MMAs and DMAs. The slope from the linear fit to these data was then applied to all samples for that day.</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1435708 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1435708
onGoing
Gregory A. Cutter
Old Dominion University
757-683-4929
Department of Ocean, Earth, and Atmospheric Sciences 4500 Elkhorn Ave
Norfolk
VA
23529-0276
USA
gcutter@odu.edu
pointOfContact
asNeeded
Dataset Version: 1
Unknown
GEOTRC_SAMPNO
Station
Depth
As_III_D_CONC_BOTTLE
As_III_V_D_CONC_BOTTLE
As_MM_D_CONC_BOTTLE
As_DM_D_CONC_BOTTLE
GEOTRACES Carousel/GO-FLO bottles
theme
None, User defined
sample identification
station
depth
trace metal concentration
featureType
BCO-DMO Standard Parameters
GO-FLO Bottle
instrument
BCO-DMO Standard Instruments
HLY1502
service
Deployment Activity
Western Arctic 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. Arctic GEOTRACES Study (GN01)
https://www.geotraces.org/
U.S. Arctic GEOTRACES Study (GN01)
<p><em>Description from NSF award abstract:</em><br />
In pursuit of its goal "to identify processes and quantify fluxes that control the distributions of key trace elements and isotopes in the ocean, and to establish the sensitivity of these distributions to changing environmental conditions", in 2015 the International GEOTRACES Program will embark on several years of research in the Arctic Ocean. In a region where climate warming and general environmental change are occurring at amazing speed, research such as this is important for understanding the current state of Arctic Ocean geochemistry and for developing predictive capability as the regional ecosystem continues to warm and influence global oceanic and climatic conditions. The three investigators funded on this award, will manage a large team of U.S.scientists who will compete through the regular NSF proposal process to contribute their own unique expertise in marine trace metal, isotopic, and carbon cycle geochemistry to the U.S. effort. The three managers will be responsible for arranging and overseeing at-sea technical services such as hydrographic measurements, nutrient analyses, and around-the-clock management of on-deck sampling activites upon which all participants depend, and for organizing all pre- and post-cruise technical support and scientific meetings. The management team will also lead educational outreach activities for the general public in Nome and Barrow, Alaska, to explain the significance of the study to these communities and to learn from residents' insights on observed changes in the marine system. The project itself will provide for the support and training of a number of pre-doctoral students and post-doctoral researchers. Inasmuch as the Arctic Ocean is an epicenter of global climate change, findings of this study are expected to advance present capability to forecast changes in regional and globlal ecosystem and climate system functioning.</p>
<p>As the United States' contribution to the International GEOTRACES Arctic Ocean initiative, this project will be part of an ongoing multi-national effort to further scientific knowledge about trace elements and isotopes in the world ocean. This U.S. expedition will focus on the western Arctic Ocean in the boreal summer of 2015. The scientific team will consist of the management team funded through this award plus a team of scientists from U.S. academic institutions who will have successfully competed for and received NSF funds for specific science projects in time to participate in the final stages of cruise planning. The cruise track segments will include the Bering Strait, Chukchi shelf, and the deep Canada Basin. Several stations will be designated as so-called super stations for intense study of atmospheric aerosols, sea ice, and sediment chemistry as well as water-column processes. In total, the set of coordinated international expeditions will involve the deployment of ice-capable research ships from 6 nations (US, Canada, Germany, Sweden, UK, and Russia) across different parts of the Arctic Ocean, and application of state-of-the-art methods to unravel the complex dynamics of trace metals and isotopes that are important as oceanographic and biogeochemical tracers in the sea.</p>
U.S. GEOTRACES Arctic
largerWorkCitation
project
GEOTRACES Arctic Section: Processes affecting the biogeochemical cycling of essential and toxic metalloids in the Arctic Ocean
https://osprey.bco-dmo.org/project/772529
GEOTRACES Arctic Section: Processes affecting the biogeochemical cycling of essential and toxic metalloids in the Arctic Ocean
<p><em>NSF Award Abstract:</em><br />
In this project, an investigator participating in the 2015 U.S. GEOTRACES Arctic expedition will establish the concentrations, chemical speciation, and cycling processes of arsenic and selenium in the Arctic Ocean. In common with other multinational initiatives in the International GEOTRACES Program, the goals of the U.S. Arctic expedition are to identify processes and quantify fluxes that control the distributions of key trace elements and isotopes in the ocean, and to establish the sensitivity of these distributions to changing environmental conditions. Some trace elements are essential to life, others are known biological toxins, and still others are important because they can be used as tracers of a variety of physical, chemical, and biological processes in the sea. The metalloid elements arsenic and selenium to be studied in this project are toxic to many marine plants and animals, and their cycling in the Arctic is not well known. Thus, this project will have important implications for increased knowledge on the chemistry of these potentially toxic elements. Results from the project will be shared through outreach to Arctic residents and through a PolarTREC teacher who will participate in the cruise.</p>
<p>The metalloid elements arsenic and selenium have dynamic marine cycles that affect the microbiology of the water column and in turn are affected by it. Both exist in multiple oxidation states and inorganic and organic species within an oxidation state. This chemical speciation affects their reactivity and biotic uptake and toxicity. As shown in lower latitude waters, the concentration and speciation of dissolved arsenic can control the abundance and types of primary producers. In the Arctic virtually nothing is known about arsenic cycling, although there are possibly enhanced anthropogenic inputs from Canadian rivers and atmospheric deposition. In contrast, data from the high latitude North Pacific Ocean and Bering Sea strongly suggest that anthropogenic selenium from coal combustion is entering the Arctic and enriching its concentration in at least one top predator. The goal of this project is to qualitatively describe the input, removal, and internal cycling processes affecting the speciation and concentrations of arsenic and selenium, and determine rates of inputs and outputs of these processes using both direct measurements and computations. The study will greatly expand knowledge about arsenic and selenium cycling, with strong implications for the changing Arctic.</p>
GEOTRACES Arctic Arsenic and Selenium
largerWorkCitation
project
eng; USA
oceans
Western Arctic Ocean
2019-10-11
Arctic Ocean; Sailing from Dutch Harbor to Dutch Harbor (GN01)
0
BCO-DMO catalogue of parameters from Arsenic Speciation from the US GEOTRACES Arctic cruise (HLY1502, GN01) from August to October 2015
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/779111.rdf
Name: GEOTRC_SAMPNO
Units: unitless
Description: <p>GEOTRACES sample number</p>
http://lod.bco-dmo.org/id/dataset-parameter/779112.rdf
Name: Station
Units: unitless
Description: <p>Station number</p>
http://lod.bco-dmo.org/id/dataset-parameter/779113.rdf
Name: Depth
Units: meters
Description: <p>Sample depth</p>
http://lod.bco-dmo.org/id/dataset-parameter/779114.rdf
Name: As_III_D_CONC_BOTTLE
Units: nanomoles per liter (nmol/L)
Description: <p>Arsenite, HAsO32-, AsIII</p>
http://lod.bco-dmo.org/id/dataset-parameter/779115.rdf
Name: As_III_V_D_CONC_BOTTLE
Units: nanomoles per liter (nmol/L)
Description: <p>Total inorganic As, As(III+V)</p>
http://lod.bco-dmo.org/id/dataset-parameter/779116.rdf
Name: As_MM_D_CONC_BOTTLE
Units: nanomoles per liter (nmol/L)
Description: <p>Monomethyl arsenic, MMAs</p>
http://lod.bco-dmo.org/id/dataset-parameter/779117.rdf
Name: As_DM_D_CONC_BOTTLE
Units: nanomoles per liter (nmol/L)
Description: <p>Dimethyl arsenic, DMAs</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
https://osprey.bco-dmo.org/dataset/779098/data/download
download
onLine
dataset
<p>0.45 µm filtered seawater samples from the GEOTRACES Carousel/GO-FLO bottles were placed into 500 mL Teflon FEP bottles, refrigerated, and analyzed within 24 hours of collection.</p>
<p>Arsenic speciation was determined using selective hydride generation, liquid nitrogen-cooled trapping, and then revolatilization and determination with gas chromatography/photoionization detection (Cutter et al., 1991; Cutter and Cutter, 2006). Calibration performed daily via the standard additions method, with a minimum of 4 additions of AsIII and AsV. The slope from the linear fit to these data was then applied to all samples for that day. Detection limits were 0.03 nmol/L for As(III) and As(V). Precision was better than 8% RSD. Dimethyl and monomethyl arsenic (DMAS and MMAs) were simultaneously determined using the total inorganic As procedures above, but using a different gas chromatography column (15% OV-3 on Chromasorb W/AW DMCS, 80/100 mesh; Cutter and Cutter, 2006)). Detection limit for the methylated As species were 0.01 nmol/L and the precision was 6% (RSD) at 0.1 nmol/L. Calibration was performed using the standard additions method with a minimum of 4 additions of MMAs and DMAs. The slope from the linear fit to these data was then applied to all samples for that day.</p>
Specified by the Principal Investigator(s)
<p>Samples analyzed in triplicate and means computed. Standard additions of selenite were used for daily calibration on a representative sample and its slope applied to subsequent samples.</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
GEOTRACES Carousel/GO-FLO bottles
GEOTRACES Carousel/GO-FLO bottles
PI Supplied Instrument Name: GEOTRACES Carousel/GO-FLO bottles Instrument Name: GO-FLO Bottle Instrument Short Name:GO-FLO Instrument Description: GO-FLO bottle cast used to collect water samples for pigment, nutrient, plankton, etc. The GO-FLO sampling bottle is specially designed to avoid sample contamination at the surface, internal spring contamination, loss of sample on deck (internal seals), and exchange of water from different depths. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/30/
Cruise: HLY1502
HLY1502
USCGC Healy
Community Standard Description
International Council for the Exploration of the Sea
USCGC Healy
vessel
HLY1502
David C. Kadko
Florida International University
https://datadocs.bco-dmo.org/docs/302/geotraces/GEOTRACES_ARCTIC/data_docs/cruise_reports/healy1502.pdf
Report describing HLY1502
USCGC Healy
Community Standard Description
International Council for the Exploration of the Sea
USCGC Healy
vessel