http://lod.bco-dmo.org/id/dataset/2834
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)
Surface Fe values from R/V Tangaroa cruise 61TG_3052 in the Southern Ocean in 1999 (SOIREE project)
2008-09-11
publication
2008-09-11
revision
BCO-DMO Linked Data URI
2008-09-11
creation
http://lod.bco-dmo.org/id/dataset/2834
Andrew R. Bowie
Plymouth Marine Laboratory
principalInvestigator
Dr Russell D. Frew
University of Otago
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: Bowie, A. R., Frew, R. D. (2008) Surface Fe values from R/V Tangaroa cruise 61TG_3052 in the Southern Ocean in 1999 (SOIREE project). Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 11September2008) Version Date 2008-09-11 [if applicable, indicate subset used]. http://lod.bco-dmo.org/id/dataset/2834 [access date]
Surface Fe Data Dataset Description: <p>SOIREE Surface Fe Data<br />
<br />
<em><strong>Comments preserved from the original file:</strong><br />
SOIREE Surface Fe underway data<br />
<br />
Author: Andrew R. Bowie (University of Plymouth and Plymouth Marine Laboratory)<br />
Dept. of Environmental Sciences, University of Plymouth, Drake Circus, Plymouth PL4 8AA, United Kingdom<br />
Tel. +44 1752 233128, Fax +44 1752 233035, E-mail abowie@plymouth.ac.uk<br />
<br />
SOIREE Fe data used in the preparation of the manuscript:<br />
Bowie et al. (2001), The Fate of Added Iron during a Mesoscale Fertilisation Experiment in the Southern Ocean<br />
<br />
This data was prepared by Andrew Bowie, whom the ownership rests with.<br />
The data is for use for SOIREE participants only for research purposes.<br />
Before using this data in any presentation or printed publication, please<br />
contact the author and include full acknowledgements. All enquiries regarding<br />
the sampling, analysis and data preparation can be directed to the address above.<br />
<br />
Notes<br />
1. Dissolved iron (DFe) underway data (nM).<br />
2. All surface Fe analyses were performed using a flow injection - chemiluminescence (FI-CL) technique based on the luminol reaction using dissolved oxygen as the oxidant (Bowie et al., 1998).<br />
3. All underway samples taken torpedo fish towed at 0.5-1 m below the surface.<br />
4. The detection limit of the FI-CL method was 0.04 nM.<br />
5. The analytical blank varied between 0.09 and 0.24 nM over 13 d with a mean standard deviation of 0.013 nM.<br />
6. Contamination (suspected to be from the ship itself) resulted in a practical limit of detection for the underway mapping of 0.10-0.20 nM, which was monitored daily.<br />
7. Out-of-patch locations determined by absence of SF6 signal. Nevertheless, continuous tracking between high Fe within patch and almost two orders lower Fe out of patch may lead to memory effect contamination of the low values for out of patch. Therefore rejections of 61 suspect out of patch "contaminated" samples<br />
8. A '&lt;' symbol indicates that the concentration was below the practical limit of detection.<br />
9. The timing of samples collected from the underway system were adjusted for lag time delays due to surface water pumping and analysis (4.0-6.5 min).<br />
10. Decimal time is given as days in February 1999 (GMT), with 1 February 1999 0:00 = 1.0000.<br />
11. Latitudes and longitudes are taken from the DAS on RV Tangaroa (no Lagrangian correction).<br />
12. Each worksheet corresponds to one mapping session.<br />
<br />
References:<br />
Bowie, A.R., Achterberg, E.P., Mantoura, R.F.C., Worsfold, P.J., 1998.<br />
Determination of sub-nanomolar levels of iron in seawater using flow injection<br />
with chemiluminescence detection. Analytica Chimica Acta 361, 189-200.<br />
<br />
Bowie, A.R., Maldonado, M.T., Frew, R.D., Croot P.L., Achterberg, E.A., Mantoura,<br />
R.F.C., Worsfold, P.J., Law, C.S., Boyd P.W., The Fate of Added Iron during a<br />
Mesoscale Fertilisation Experiment in the Southern Ocean, Deep-Sea Research II (2001),<br />
SOIREE special issue, in the press.<br />
<br />
Note<br />
Values in brackets ('[ ]') were suspected to be contaminated<br />
<br />
<strong>Data from original Pre-release Site Survey Notes columns below</strong></em></p>
<pre>
<em>
datetimeNotes
199902080021Ship moving slowly
199902080202nd
199902080330nd
199902080414nd
199902080500Ship moving slowly
199902080530nd
199902080907nd
199902080955nd
199902081000nd
199902091235Below LOD
199902091243Below LOD
199902091308nd
Mean0.08
Std. Dev.0.03
n10
2 rejections
</em></pre>
<p>&nbsp;</p>
<p>&nbsp;</p>
<p>&nbsp;</p> Methods and Sampling: <p>See <a href="http://data.bco-dmo.org/Fe_Synthesis/SOIREE/SOIREE_cruisereport.pdf">SOIREE Preliminary Voyage Report</a><br />
<br />
<strong>Underway Fe Mapping</strong><br />
(Andrew R. Bowie, UoP / PML, UK)<br />
<br />
<strong>Objectives</strong><br />
(i)To map the ambient concentration and investigate surface water changes in Fe2+,<br />
dissolved (diss-Fe, &lt;0.2mm) and total dissolvable (TD-Fe) iron during the experiment<br />
<br />
(ii)To study the vertical distribution of Fe INside and OUTside the fertilised 16<br />
patch via laboratory based analysis of sub-samples taken from daily Go-Flo casts<br />
<br />
(iii)To perform an intercalibration exercise between FI-CL (AB) and solvent extraction<br />
GFAAS (RF) technologies from identical samples taken from Go-Flo casts<br />
<br />
(iv)To study the surface water distribution of Fe and other trace metals along a latitudinal<br />
transect of the west coast of New Zealand<br />
<br />
<strong>Analytical and Sampling Methodologies</strong><br />
Shipboard determinations were performed using a semi-automated flow injection chemiluminescence<br />
(FI-CL) analyser. The technique enabled real-time analysis of Fe2+, diss-Fe and TD-Fe fractions<br />
at the sub-nanomolar concentration level. The system is based on the oxidation of luminol, which<br />
is catalysed by Fe2+ ions, emitting blue light. A reduction step was performed to determine the<br />
Fe(II+III) fraction and in-line matrix elimination / sample preconcentration was achieved using<br />
a 8-hydroxyquinoline micro-column. Surface samples were taken from a torpedo-style fish deployed<br />
at 1-2 m and pumped directly into container designed for trace metal work. Vertical profiling<br />
samples were collected from 5L and 30L trace metal Go-Flo sampling bottles deployed on Kevlar rope.<br />
<br />
<strong>Preliminary Results</strong><br />
The FI-CL system performed with only minor problems throughout the one-month cruise period.<br />
A minimum of 50 samples were analysed during each mapping period for Fe2+, diss-Fe and / or<br />
TD-Fe fractions. Ambient surface water diss-Fe levels (0.08 nM) were raised to ca. 2 nM on<br />
the first infusion, to 1 nM during infusions 2 and 3 and to 2nM on infusion 4. Rapid loss of<br />
diss-Fe INside the patch to near ambient levels was noted after the first 3 infusions; this<br />
was due to the conversion of the added iron sulphate heptahydrate to colloidal and particulate<br />
phases. However, &gt;1 nM diss-Fe persisted INside the patch for the 5 days following the 4th<br />
infusion. Furthermore, significant concentrations of Fe2+ species existed INside the patch on<br />
days 12 and 13 of the experiment. Maximum surface water TD-Fe levels (&gt;5 nM) were measured on<br />
day 8, following the 4th infusion.<br />
&nbsp;</p>
completed
Andrew R. Bowie
Plymouth Marine Laboratory
+61 613-6226 2509
University of Tasmania
Hobart
Tasmania
7001
Australia
Andrew.Bowie@utas.edu.au
pointOfContact
Dr Russell D. Frew
University of Otago
+64 3 479 7913
Department of Chemistry, University of Otago P.O. Box 56
Dunedin
New Zealand
rfrew@chemistry.otago.ac.nz
pointOfContact
asNeeded
Dataset Version: 11September2008
Unknown
date
time
UncorrPosE
UncorrPosN
DriftE
DriftN
CorrPosE
CorrPosN
lon
lat
Dfe
Year
Map
SDY
SOIREEDay
DayDate
TimeDecimal
Yr
Map_top
SDY_top
SOIREE_Day
DayDate_top
Undulator
theme
None, User defined
date
time of day
No BCO-DMO term
longitude
latitude
year
year day (Day of Year, or day of year and decimal time)
featureType
BCO-DMO Standard Parameters
SOIREE Undulator
instrument
BCO-DMO Standard Instruments
61TG_3052
service
Deployment Activity
Southern 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.
Iron Synthesis
https://osprey.bco-dmo.org/program/2017
Iron Synthesis
The two main objectives of the Iron Synthesis program (SCOR Working Group proposal, 2005), are:
1. Data compilation: assembling a common open-access database of the in situ iron experiments, beginning with the first period (1993-2002; Ironex-1, Ironex-2, SOIREE, EisenEx, SEEDS-1; SOFeX, SERIES) where primary articles have already been published, to be followed by the 2004 experiments where primary articles are now in progress (EIFEX, SEEDS-2; SAGE, FeeP); similarly for the natural fertilizations S.O.JGOFS (1992), CROZEX (2004/2005) and KEOPS (2005).
2. Modeling and data synthesis of specific aspects of two or more such experiments for various topics such as physical mixing, phytoplankton productivity, overall ecosystem functioning, iron chemistry, CO2 budgeting, nutrient uptake ratios, DMS(P) processes, and combinations of these variables and processes.
SCOR Working Group proposal, 2005. "The Legacy of in situ Iron Enrichments: Data Compilation and Modeling".
http://www.scor-int.org/Working_Groups/wg131.htm
See also: SCOR Proceedings Vol. 42 Concepcion, Chile October 2006, pgs: 13-16 2.3.3 Working Group on The Legacy of in situ Iron Enrichments: Data Compilation and Modeling.
The first objective of the Iron Synthesis program involves a data recovery effort aimed at assembling a common, open-access database of data and metadata from a series of in-situ ocean iron fertilization experiments conducted between 1993 and 2005. Initially, funding for this effort is being provided by the Scientific Committee on Oceanic Research (SCOR) and the U.S. National Science Foundation (NSF).
Through the combined efforts of the principal investigators of the individual projects and the staff of Biological and Chemical Oceanography Data Management Office (BCO-DMO), data currently available primarily through individuals, disparate reports and data agencies, and in multiple formats, are being collected and prepared for addition to the BCO-DMO database from which they will be freely available to the community.
As data are contributed to the BCO-DMO office, they are organized into four overlapping categories:
1. Level 1, basic metadata
(e.g., description of project/study, general location, PI(s), participants);
2. Level 2, detailed metadata and basic shipboard data and routine ship's operations
(e.g., CTDs, underway measurements, sampling event logs);
3. Level 3, detailed metadata and data from specialized observations
(e.g., discrete observations, experimental results, rate measurements) and
4. Level 4, remaining datasets
(e.g., highest level of detailed data available from each study).
Collaboration with BCO-DMO staff began in March of 2008 and initial efforts have been directed toward basic project descriptions, levels 1 and 2 metadata and basic data, with detailed and more detailed data files being incorporated as they become available and are processed.
Related file
Program Documentation
The Iron Synthesis Program is funded jointly by the Scientific Committee on Oceanic Research (SCOR) and the U.S. National Science Foundation (NSF).
FeSynth
largerWorkCitation
program
Southern Ocean Iron Release Experiment
https://osprey.bco-dmo.org/project/2051
Southern Ocean Iron Release Experiment
<p>Project in the Southern Ocean aimed at maintaining a coherent patch of iron-enriched seawater for the duration of project and to interpret any iron-mediated effects on the patch by conducting measurements and performing experiments during this period of the project.</p>
<p>The Southern Ocean Iron RElease Experiment (SOIREE), was the first in situ iron fertilization experiment performed in the polar waters of the Southern Ocean. SOIREE was an interdisciplinary study involving participants from six countries, and took place in February 1999 south of the Polar Front in the Australasian-Pacific sector of the Southern Ocean.</p>
<p>Approximately 3800 kg of acidified FeSO4.7H2O and 165 g of the tracer sulphur hexafluoride (SF6) were added to a 65-m deep surface mixed layer over an area of ~50 km2. Initially, mean dissolved iron concentrations were ~2.7 nM, but decreased to ambient levels within days, requiring subsequent additions of 1550-1750 kg of acidified FeSO4.7H2O on days 3, 5 and 7 of the experiment.</p>
<p>During the 13-day site occupation, there were iron-mediated increases in phytoplankton growth rates, with marked increases in chlorophyll a (up to 2 µgl-1) and production rates (up to 1.3 gCm-2d-1). These resulted in subsequent changes in the pelagic ecosystem structure, and in the cycling of carbon, silica and sulphur, such as a 10% drawdown of surface CO2.</p>
<p>The SOIREE bloom persisted for >40 days following our departure from the site, as observed via <a href="http://data.bco-dmo.org/jg/serv/BCO/Fe_Synthesis/SOIREE/61TG_3052/SEAWIFS.html0" target="_blank"">SeaWiFS remotely sensed observations of Ocean Colour.</a></p>
<p><strong>BCO-DMO Note:</strong><br />
All original data and metadata provided on a CD-Rom accompanying the Deep-Sea Research II 48 (2001) volume. The CD-Rom contains the main SOIREE datasets and ancillary information including the pre-experiment 'desktop' database study for site-selection, and satellite images of the SOIREE bloom.<br />
© 2001 Elsevier Science Ltd. All rights reserved.</p>
<h3>Related files</h3>
<p><a href="http://data.bco-dmo.org/Fe_Synthesis/SOIREE/SOIREE_cruisereport.pdf">SOIREE Preliminary Voyage Report</a><br />
<a href="http://data.bco-dmo.org/Fe_Synthesis/SOIREE/Boyd_Law_2001_Intro.pdf">SOIREE Introduction and Summary, Deep-Sea Research II 48 (2001) 2425-2438</a><br />
<a href="http://data.bco-dmo.org/Fe_Synthesis/SOIREE/FeSyn_SOIREE_CruiseTrack_GoogleEarth.png" target="_blank"">SOIREE Cruise Track</a></p>
SOIREE
largerWorkCitation
project
eng; USA
oceans
Southern Ocean
2008-09-11
Southern Ocean
0
BCO-DMO catalogue of parameters from Surface Fe values from R/V Tangaroa cruise 61TG_3052 in the Southern Ocean in 1999 (SOIREE 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/18295.rdf
Name: date
Units: YYYYMMDD
Description: <p>date</p>
http://lod.bco-dmo.org/id/dataset-parameter/18296.rdf
Name: time
Units: HHMM
Description: <p>time</p>
http://lod.bco-dmo.org/id/dataset-parameter/18297.rdf
Name: UncorrPosE
Units: kilometers
Description: <p>Eastward position of shiptrack</p>
http://lod.bco-dmo.org/id/dataset-parameter/18298.rdf
Name: UncorrPosN
Units: kilometers
Description: <p>Northward position of shiptrack</p>
http://lod.bco-dmo.org/id/dataset-parameter/18299.rdf
Name: DriftE
Units: kilometers
Description: <p>Eastward drift calculated from ADCP</p>
http://lod.bco-dmo.org/id/dataset-parameter/18300.rdf
Name: DriftN
Units: kilometers
Description: <p>Northward drift calculated from ADCP</p>
http://lod.bco-dmo.org/id/dataset-parameter/18301.rdf
Name: CorrPosE
Units: kilometers
Description: <p>Corrected ship-track (Eastward component)</p>
http://lod.bco-dmo.org/id/dataset-parameter/18302.rdf
Name: CorrPosN
Units: kilometers
Description: <p>Corrected ship track (Northward component)</p>
http://lod.bco-dmo.org/id/dataset-parameter/18303.rdf
Name: lon
Units: decimal degrees
Description: <p>longitude, negative denotes West</p>
http://lod.bco-dmo.org/id/dataset-parameter/18304.rdf
Name: lat
Units: decimal degrees
Description: <p>latitude, negative denotes South</p>
http://lod.bco-dmo.org/id/dataset-parameter/18305.rdf
Name: Dfe
Units: nM
Description: <p>Dissolved Iron</p>
http://lod.bco-dmo.org/id/dataset-parameter/18306.rdf
Name: Year
Units: YYYY
Description: <p>Year of data</p>
http://lod.bco-dmo.org/id/dataset-parameter/18307.rdf
Name: Map
Units: integer
Description: <p>Map number of mapping session</p>
http://lod.bco-dmo.org/id/dataset-parameter/18308.rdf
Name: SDY
Units: text
Description: <p>Day of the year</p>
http://lod.bco-dmo.org/id/dataset-parameter/18309.rdf
Name: SOIREEDay
Units: integer
Description: <p>Day of SOIREE Experiment (Day 1=10Feb1999)</p>
http://lod.bco-dmo.org/id/dataset-parameter/18310.rdf
Name: DayDate
Units: DD-Mon
Description: <p>Day/Date of Data</p>
http://lod.bco-dmo.org/id/dataset-parameter/18311.rdf
Name: TimeDecimal
Units: decimal days
Description: <p>Days in February 1999 (GMT) with 1 February 1999 0:00 = 1.0000</p>
http://lod.bco-dmo.org/id/dataset-parameter/18312.rdf
Name: Yr
Units: YY
Description: <p>Year of data</p>
http://lod.bco-dmo.org/id/dataset-parameter/544550.rdf
Name: Map_top
Units: unknown
Description: <p>Toplevel Map number.</p>
http://lod.bco-dmo.org/id/dataset-parameter/544551.rdf
Name: SDY_top
Units: dd
Description: <p>Top level Day of the year.</p>
http://lod.bco-dmo.org/id/dataset-parameter/544552.rdf
Name: SOIREE_Day
Units: integer
Description: <p>Day of SOIREE Experiment (Day 1=10Feb1999) at the top level</p>
http://lod.bco-dmo.org/id/dataset-parameter/544553.rdf
Name: DayDate_top
Units: dd-bbb
Description: <p>Day and month combo</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
90806
https://datadocs.bco-dmo.org/file/vmmwM4AHoGOvE/SurfaceFe.csv
SurfaceFe.csv
Primary data file for dataset ID 2834
download
https://osprey.bco-dmo.org/dataset/2834/data/download
download
onLine
dataset
<p>See <a href="http://data.bco-dmo.org/Fe_Synthesis/SOIREE/SOIREE_cruisereport.pdf">SOIREE Preliminary Voyage Report</a><br />
<br />
<strong>Underway Fe Mapping</strong><br />
(Andrew R. Bowie, UoP / PML, UK)<br />
<br />
<strong>Objectives</strong><br />
(i)To map the ambient concentration and investigate surface water changes in Fe2+,<br />
dissolved (diss-Fe, &lt;0.2mm) and total dissolvable (TD-Fe) iron during the experiment<br />
<br />
(ii)To study the vertical distribution of Fe INside and OUTside the fertilised 16<br />
patch via laboratory based analysis of sub-samples taken from daily Go-Flo casts<br />
<br />
(iii)To perform an intercalibration exercise between FI-CL (AB) and solvent extraction<br />
GFAAS (RF) technologies from identical samples taken from Go-Flo casts<br />
<br />
(iv)To study the surface water distribution of Fe and other trace metals along a latitudinal<br />
transect of the west coast of New Zealand<br />
<br />
<strong>Analytical and Sampling Methodologies</strong><br />
Shipboard determinations were performed using a semi-automated flow injection chemiluminescence<br />
(FI-CL) analyser. The technique enabled real-time analysis of Fe2+, diss-Fe and TD-Fe fractions<br />
at the sub-nanomolar concentration level. The system is based on the oxidation of luminol, which<br />
is catalysed by Fe2+ ions, emitting blue light. A reduction step was performed to determine the<br />
Fe(II+III) fraction and in-line matrix elimination / sample preconcentration was achieved using<br />
a 8-hydroxyquinoline micro-column. Surface samples were taken from a torpedo-style fish deployed<br />
at 1-2 m and pumped directly into container designed for trace metal work. Vertical profiling<br />
samples were collected from 5L and 30L trace metal Go-Flo sampling bottles deployed on Kevlar rope.<br />
<br />
<strong>Preliminary Results</strong><br />
The FI-CL system performed with only minor problems throughout the one-month cruise period.<br />
A minimum of 50 samples were analysed during each mapping period for Fe2+, diss-Fe and / or<br />
TD-Fe fractions. Ambient surface water diss-Fe levels (0.08 nM) were raised to ca. 2 nM on<br />
the first infusion, to 1 nM during infusions 2 and 3 and to 2nM on infusion 4. Rapid loss of<br />
diss-Fe INside the patch to near ambient levels was noted after the first 3 infusions; this<br />
was due to the conversion of the added iron sulphate heptahydrate to colloidal and particulate<br />
phases. However, &gt;1 nM diss-Fe persisted INside the patch for the 5 days following the 4th<br />
infusion. Furthermore, significant concentrations of Fe2+ species existed INside the patch on<br />
days 12 and 13 of the experiment. Maximum surface water TD-Fe levels (&gt;5 nM) were measured on<br />
day 8, following the 4th infusion.<br />
&nbsp;</p>
Specified by the Principal Investigator(s)
<p>See <a href="http://data.bco-dmo.org/Fe_Synthesis/SOIREE/SOIREE_cruisereport.pdf">SOIREE Preliminary Voyage Report</a><br />
<br />
<strong>Underway Fe Mapping</strong><br />
(Andrew R. Bowie, UoP / PML, UK)<br />
<br />
<strong>Objectives</strong><br />
(i)To map the ambient concentration and investigate surface water changes in Fe2+,<br />
dissolved (diss-Fe, &lt;0.2mm) and total dissolvable (TD-Fe) iron during the experiment<br />
<br />
(ii)To study the vertical distribution of Fe INside and OUTside the fertilised 16<br />
patch via laboratory based analysis of sub-samples taken from daily Go-Flo casts<br />
<br />
(iii)To perform an intercalibration exercise between FI-CL (AB) and solvent extraction<br />
GFAAS (RF) technologies from identical samples taken from Go-Flo casts<br />
<br />
(iv)To study the surface water distribution of Fe and other trace metals along a latitudinal<br />
transect of the west coast of New Zealand<br />
<br />
<strong>Analytical and Sampling Methodologies</strong><br />
Shipboard determinations were performed using a semi-automated flow injection chemiluminescence<br />
(FI-CL) analyser. The technique enabled real-time analysis of Fe2+, diss-Fe and TD-Fe fractions<br />
at the sub-nanomolar concentration level. The system is based on the oxidation of luminol, which<br />
is catalysed by Fe2+ ions, emitting blue light. A reduction step was performed to determine the<br />
Fe(II+III) fraction and in-line matrix elimination / sample preconcentration was achieved using<br />
a 8-hydroxyquinoline micro-column. Surface samples were taken from a torpedo-style fish deployed<br />
at 1-2 m and pumped directly into container designed for trace metal work. Vertical profiling<br />
samples were collected from 5L and 30L trace metal Go-Flo sampling bottles deployed on Kevlar rope.<br />
<br />
<strong>Preliminary Results</strong><br />
The FI-CL system performed with only minor problems throughout the one-month cruise period.<br />
A minimum of 50 samples were analysed during each mapping period for Fe2+, diss-Fe and / or<br />
TD-Fe fractions. Ambient surface water diss-Fe levels (0.08 nM) were raised to ca. 2 nM on<br />
the first infusion, to 1 nM during infusions 2 and 3 and to 2nM on infusion 4. Rapid loss of<br />
diss-Fe INside the patch to near ambient levels was noted after the first 3 infusions; this<br />
was due to the conversion of the added iron sulphate heptahydrate to colloidal and particulate<br />
phases. However, &gt;1 nM diss-Fe persisted INside the patch for the 5 days following the 4th<br />
infusion. Furthermore, significant concentrations of Fe2+ species existed INside the patch on<br />
days 12 and 13 of the experiment. Maximum surface water TD-Fe levels (&gt;5 nM) were measured on<br />
day 8, following the 4th infusion.<br />
<br />
<strong>BCO-DMO Processing Notes</strong><br />
Generated from original file SurfaceFe.xls, Tabs: Notes, Pre_release, and map1-map13<br />
provided on the Deep-Sea Research II 48 (2001) accompanying CD-Rom<br />
<br />
<strong>BCO-DMO Edits</strong><br />
- parameter names modified to conform to BCO-DMO convention<br />
- individual SOIREE Map, Yr, SDAY, etc record commented and added as columns to each data record<br />
- added negative sign to latitude values<br />
- 2 original column header records re-organized into one header line<br />
- No data or Bad data flag changed to BCO-DMO standard of "nd"<br />
&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
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Undulator
Undulator
PI Supplied Instrument Name: Undulator PI Supplied Instrument Description:On SOIREE, the undulator did not undulate.
As a result, it was towed at a constant depth of 1-2 meters Instrument Name: SOIREE Undulator Instrument Short Name:SOIREE Undulator Instrument Description: The SOIREE Undulator was a torpedo-style fish used during the SOIREE cruise for the collection of underway water samples. A variety of sampling devices are housed within the fish, although little detailed information was provided. It was designed to undulate through a depth profile as it was being towed behind the research vessel.
Cruise: 61TG_3052
61TG_3052
Community Standard Description
International Council for the Exploration of the Sea
R/V Tangaroa
vessel
61TG_3052
Philip W. Boyd
University of Otago
http://bcodata.whoi.edu/Fe_Synthesis/SOIREE/SOIREE_cruisereport.pdf
Report describing 61TG_3052
Community Standard Description
International Council for the Exploration of the Sea
R/V Tangaroa
vessel