http://lod.bco-dmo.org/id/dataset/2552
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
2010-06-16
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Iodine speciation from R/V Thomas G. Thompson TT045 cruise in the Arabian Sea in 1995 (U.S. JGOFS Arabian Sea project)
1997-04-15
publication
1997-04-15
revision
BCO-DMO Linked Data URI
1997-04-15
creation
http://lod.bco-dmo.org/id/dataset/2552
George W. Luther
University of Delaware
principalInvestigator
Dr Brent Lewis
University of Delaware
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: Luther, G. W., Lewis, B. (1997) Iodine speciation from R/V Thomas G. Thompson TT045 cruise in the Arabian Sea in 1995 (U.S. JGOFS Arabian Sea project). Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version April 15, 1997 ) Version Date 1997-04-15 [if applicable, indicate subset used]. http://lod.bco-dmo.org/id/dataset/2552 [access date]
Iodine speciation Dataset Description: <p>Iodine speciation</p> Methods and Sampling: <pre>
<b>PI:</b> George Luther and Brent Lewis
<b>of:</b> University of Delaware
<b>dataset:</b> Iodine speciation
<b>dates:</b> March 15, 1995 to April 06, 1995
<b>location:</b> N: 22.4858 S: 10.8153 W: 58.0077 E: 68.7302
<b>cruise:</b> TN045, Arabian Sea Process cruise #2 (Spring Intermonsoon)
<b>ship:</b> R/V Thomas Thompson
COLLECTION
Samples were collected from routine hydrocasts and 0.45 micron (Gelman Supor
membrane) filtered prior to analyses. Care was taken to draw samples after the
dissolved oxygen reagents were removed from the hydrolab to avoid any potential
sources of contamination during sampling.
</pre>
Funding provided by National Science Foundation (NSF) Award Number: unknown Arabian Sea NSF
completed
George W. Luther
University of Delaware
302-645-4208
700 Pilottown Road School of Marine Science and Policy
Lewes
DE
19958
USA
luther@udel.edu
pointOfContact
Dr Brent Lewis
University of Delaware
blewis@nova.gmi.edu
pointOfContact
asNeeded
Dataset Version: April 15, 1997
Unknown
event
sta_std
sta
cast
bot
press
iodide
iodine_tot
iodine_tot_sd
Niskin Bottle
theme
None, User defined
event
No BCO-DMO term
cast
water pressure
featureType
BCO-DMO Standard Parameters
Niskin bottle
instrument
BCO-DMO Standard Instruments
TT045
service
Deployment Activity
U.S. JGOFS Arabian Sea
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. Joint Global Ocean Flux Study
http://usjgofs.whoi.edu/
U.S. Joint Global Ocean Flux Study
The United States Joint Global Ocean Flux Study was a national component of international JGOFS and an integral part of global climate change research.
The U.S. launched the Joint Global Ocean Flux Study (JGOFS) in the late 1980s to study the ocean carbon cycle. An ambitious goal was set to understand the controls on the concentrations and fluxes of carbon and associated nutrients in the ocean. A new field of ocean biogeochemistry emerged with an emphasis on quality measurements of carbon system parameters and interdisciplinary field studies of the biological, chemical and physical process which control the ocean carbon cycle. As we studied ocean biogeochemistry, we learned that our simple views of carbon uptake and transport were severely limited, and a new "wave" of ocean science was born. U.S. JGOFS has been supported primarily by the U.S. National Science Foundation in collaboration with the National Oceanic and Atmospheric Administration, the National Aeronautics and Space Administration, the Department of Energy and the Office of Naval Research. U.S. JGOFS, ended in 2005 with the conclusion of the Synthesis and Modeling Project (SMP).
U.S. JGOFS
largerWorkCitation
program
U.S. JGOFS Arabian Sea
http://usjgofs.whoi.edu/research/arabian.html
U.S. JGOFS Arabian Sea
<p>The U.S. Arabian Sea Expedition which began in September 1994 and ended in January 1996, had three major components: a U.S. JGOFS Process Study, supported by the National Science Foundation (NSF); Forced Upper Ocean Dynamics, an Office of Naval Research (ONR) initiative; and shipboard and aircraft measurements supported by the National Aeronautics and Space Administration (NASA). The Expedition consisted of 17 cruises aboard the R/V Thomas Thompson, year-long moored deployments of five instrumented surface buoys and five sediment-trap arrays, aircraft overflights and satellite observations. Of the seventeen ship cruises, six were allocated to repeat process survey cruises, four to SeaSoar mapping cruises, six to mooring and benthic work, and a single calibration cruise which was essentially conducted in transit to the Arabian Sea.</p>
Arabian Sea
largerWorkCitation
project
eng; USA
oceans
U.S. JGOFS Arabian Sea
1997-04-15
Arabian Sea
0
BCO-DMO catalogue of parameters from Iodine speciation from R/V Thomas G. Thompson TT045 cruise in the Arabian Sea in 1995 (U.S. JGOFS Arabian Sea 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/9941.rdf
Name: event
Units: dimensionless
Description: <p>event number from event log</p>
http://lod.bco-dmo.org/id/dataset-parameter/9942.rdf
Name: sta_std
Units: unknown
Description: <p>Arabian Sea standard station identifier</p>
http://lod.bco-dmo.org/id/dataset-parameter/9943.rdf
Name: sta
Units: unknown
Description: <p>station number from event log</p>
http://lod.bco-dmo.org/id/dataset-parameter/9944.rdf
Name: cast
Units: dimensionless
Description: <p>CTD cast number</p>
http://lod.bco-dmo.org/id/dataset-parameter/9945.rdf
Name: bot
Units: unknown
Description: <p>CTD bottle number</p>
http://lod.bco-dmo.org/id/dataset-parameter/9946.rdf
Name: press
Units: decibars
Description: <p>sample depth reported as pressure</p>
http://lod.bco-dmo.org/id/dataset-parameter/9947.rdf
Name: iodide
Units: nM
Description: <p>concentration of iodide</p>
http://lod.bco-dmo.org/id/dataset-parameter/9948.rdf
Name: iodine_tot
Units: nM
Description: <p>concentration of total iodine</p>
http://lod.bco-dmo.org/id/dataset-parameter/9949.rdf
Name: iodine_tot_sd
Units: unknown
Description: <p>standard deviation of total iodine</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
5706
https://datadocs.bco-dmo.org/file/1VVMolXfJAAoW/iodine.csv
iodine.csv
Primary data file for dataset ID 2552
download
https://osprey.bco-dmo.org/dataset/2552/data/download
download
onLine
dataset
<pre>
<b>PI:</b> George Luther and Brent Lewis
<b>of:</b> University of Delaware
<b>dataset:</b> Iodine speciation
<b>dates:</b> March 15, 1995 to April 06, 1995
<b>location:</b> N: 22.4858 S: 10.8153 W: 58.0077 E: 68.7302
<b>cruise:</b> TN045, Arabian Sea Process cruise #2 (Spring Intermonsoon)
<b>ship:</b> R/V Thomas Thompson
COLLECTION
Samples were collected from routine hydrocasts and 0.45 micron (Gelman Supor
membrane) filtered prior to analyses. Care was taken to draw samples after the
dissolved oxygen reagents were removed from the hydrolab to avoid any potential
sources of contamination during sampling.
</pre>
Specified by the Principal Investigator(s)
<h2>Iodide methodology, Luther, Lewis</h2>
<pre>
Iodide, total iodine
ANALYSES
Iodide and iodate concentrations were determined using polarographic
and voltammetric methods.
Iodide (I-) was measured using cathodic stripping square wave
voltammetry (CSSWV) [Luther et. al., 1988].
Iodate (IO3-) was measured using differential pulse polarography (DPP)
[Herring and Liss, 1974].
Total iodine (...Ired) was measured using CSSWV [Campos (in press)].
Total iodine (...Iox) was measured using method of Takayanagi and Wong,
1986 following sample oxidation with 0.2% NaOCl.
The instrument minimum detection limits in seawater for I-, IO3-, ...Iox
and ...Ired using polarography are 0.2, 20, 20, and 5 nM respectively.
Total iodine methodologies gave statistically equivalent values and are
therefore simply reported as Tot_I.
For detailed comparisons please consult (Farrenkopf,1997 --
Dissertation University of Delaware).
Precision for iodide based upon triplicate measurements of individual
samples is within 5-10% in samples greater than 200 nM and within 1-2%
for iodide concentrations less than 200 nM. Method precisions in 3.5%
NaCl were +/- 1%. Precisions for the total methods tend to vary
significantly from sample to sample and so reported errors &quot;stdev
Tot_I&quot; reflect the standard deviation of at least three replicates with
three distinct standard addition curves (n&gt;3).
EQUIPMENT
Electrochemical measurements were made in 10 mL glass polarographic
cells. EG &amp; G Princeton Applied Research model 384 B polarographic
analyzers equipped with 303A hanging mercury drop working electrode
(HDME) stands were used throughout. Potentials were measured vs. a
saturated calomel reference electrode (SCE). A platinum counter
electrode was used for current measurements in a standard three
electrode voltammetric arrangement. Iodide gives rise to a peak at a
potential of -0.306 V, and iodate has a peak potential of -1.08 V.
Aboard ship 10.0 mL aliquots of sample were dispensed into glass
voltammetric cells and purged of dissolved oxygen with ultra pure
nitrogen gas. The concentrations of iodine species were determined by
the method of standard addition. A minimum of three standard additions
were made for each determination. Tot_I measurements were also made
with an Analytical Instrument Systems (AIS) DLK-100 with version 3.4
software equipped with a 303A hanging mercury drop working electrode
(HDME) stand. The analyses on the DLK-100 were the same as with the
384B (Luther et al., 1988) with the exception that the frequency was
200 Hz (as compared to 100 Hz on the 384B).
References:
Campos, M.L.A. (in press) New approach to evaluating dissolved iodine
speciation in natural waters using cathodic stripping voltammetry.
Marine Chemistry
Luther, G. W., III, C. Branson Swartz and W.J. Ullman (1988) Direct
determination of iodide in seawater by cathodic stripping square wave
voltammetry. Analytical Chemistry. 60: 1721-1724.
Luther, G.W., III (1991) Sulfur and iodine speciation in the water
column of the Black Sea, in Black Sea Oceanography, E. Izdar and J. W.
Murray, Editors. Kluwer Publishers: Netherlands. p. 187-204.
Herring, J.R. and P.S. Liss (1974) A new method for the determination
of iodine species in seawater. Deep-Sea Research I. 21: 777-783.
Farrenkopf, A.M., G.W. Luther, III, V.W. Truesdale and C.H. van der
Weijden (in press) Sub-surface iodide maxima: Evidence for biologically
catalyzed redox cycling in Arabian Sea OMZ during the SW intermonsoon.
Deep-Sea Research.
Takayanagi, K. and G.T.F. Wong (1986) The oxidation of iodide to iodate
for the polarographic determination of total iodine in natural waters.
Talanta. 33(5): 451-454.
Theberge, S.M., III G.W. Luther and A.M. Farrenkopf (in press) On the
existence of free and metal complexed sulfide in the Arabian Sea and
it's Oxygen Minimum Zone. Deep-Sea Research.
</pre>
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:CTD/Niskin Rosette bottles 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/
Cruise: TT045
TT045
R/V Thomas G. Thompson
Community Standard Description
International Council for the Exploration of the Sea
R/V Thomas G. Thompson
vessel
TT045
John F. Marra
Lamont-Doherty Earth Observatory
R/V Thomas G. Thompson
Community Standard Description
International Council for the Exploration of the Sea
R/V Thomas G. Thompson
vessel