Iron Distribution and Effects on Phytoplankton Growth in the Seasonal Sea Ice Zone

Peter Sedwick collected water column samples (6 depths, less than 350m) and measured dissolved iron in these samples, using specialised trace-metal clean techniques, at 9 stations along the SR3 transect between 47 deg S and 66 deg S. These are the first such data for this oceanographic sector during spring. The dissolved iron levels were generally very low (less than 0.2 nM nM) in the upper water column, particularly south of the Subantarctic Front, and surprisingly there was no evidence of significant iron inputs from melting sea ice in our study region. Ongoing work quantified various size fractions of dissolved iron as well as total acid soluble iron.


In addition, Jack DiTullio collected water samples for measurements of five biogenic sulfur pools at most shallow water CTD casts. The sulfur pools measured include: dimethylsulfide (DMS), particulate and dissolved dimethylsulfoniopropionate (DMSP) and particulate and dissolved pools of dimethylsulfoxide (DMSO).


Taken from the referenced paper:


A shipboard-deployable, flow-injection (FI) based instrument for monitoring iron(II) in surface marine waters is described. It incorporates a miniature, low-power photoncounting head for measuring the light emitted from the iron-(II)-catalyzed chemiluminescence (CL) luminol reaction. System control, signal acquisition, and data processing are performed in a graphical programming environment. The limit of detection for iron(II) is in the range 8-12 pmol L-1(based on 3s of the blank), and the precision over the range 8-1000 pmol L-1 varies between 0.9 and 7.6% (n )4). Results from a day-night deployment during a north to-south transect of the Atlantic Ocean and a daytime transect in the Sub-Antarctic Front are presented together with ancillary temperature, salinity, and irradiance data. The generic nature of the components used to assemble the instrument make the technology readily transferable to other laboratories and the modular construction makes it easy to adapt the system for use with other CL chemistries.

Simple

Identification info

Alternate title
Iron Distribution and Effects on Phytoplankton Growth in the Seasonal Sea Ice Zone
Date (Publication)
2013-12-06
Edition
1
Citation identifier
Dataset DOI

Title
Information and documentation - Digital object identifier system
Date (Publication)
2012-04-23
Citation identifier
ISO 26324:2012

Citation identifier
doi:10.4225/15/55669D573315A

Originator

Sedwick, P. and Bowie, A.R.

Publisher

Australian Antarctic Data Centre

Principal investigator

SEDWICK, PETER
4600 Elkhorn Ave
Norfolk
VA
23529
USA

Principal investigator

BOWIE, ANDREW ROSS
IASOS and Antarctic CRC
Private Bag 80
University of Tasmania
Hobart
Tasmania
7001
Australia

Collaborator

SEDWICK, PETER
4600 Elkhorn Ave
Norfolk
VA
23529
USA

Collaborator

BOWIE, ANDREW ROSS
IASOS and Antarctic CRC
Private Bag 80
University of Tasmania
Hobart
Tasmania
7001
Australia
Name
CAASM Metadata
Website
https://data.aad.gov.au/metadata/records/ASAC_1301

Status
Completed

Custodian

AU/AADC > Australian Antarctic Data Centre, Australia - AADC, DATA OFFICER (DATA CENTER CONTACT)
Australian Antarctic Division
203 Channel Highway
Kingston
Tasmania
7050
Australia
Topic category
  • Biota
  • Geoscientific information
  • Oceans

Extent

N
S
E
W


Extent

Description
Temporal Coverage

Temporal extent

TimePeriod
2001-10-29 2001-12-13

Extent

Description
Vertical Extent - Depth

Vertical element

Minimum value
0
Maximum value
350
Identifier
urn:x-ogc:def:cs:EPSG:6498
Name
Vertical CS. Axis: depth (D). Orientation: down. UoM: m.
Identifier
urn:x-ogc:def:axis:EPSG:113
Name
depth
Title
Real-time monitoring of picomolar concentrations of iron(II) in marine waters using automated flow injection - chemiluminescence instrumentation.
Date (Publication)
2002
Citation identifier
36

Author

Bowie A.R., Ussher S.J., Achterberg E.P., Sedwick P.N., Worsfold P.J.
Name
Environmental Science and Technology
Page
4600-4607
NASA/GCMD Earth Science Keywords
  • EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > OCEAN TRACERS
  • EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > ORGANIC MATTER
  • EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > TRACE ELEMENTS
  • EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > AQUATIC ECOSYSTEMS > PLANKTON > PHYTOPLANKTON
Keywords
  • CTD
  • DIMETHYLSULFIDE
  • DIMETHYLSULFONIOPROPIONATE
  • DIMETHYLSULFOXIDE
  • DISSOLVED IRON
  • PHYTOPLANKTON
  • SEA ICE
NASA/GCMD Earth Science Keywords
  • SHIPS
  • R/V AA > R/V Aurora Australis
NASA/GCMD Earth Science Keywords
  • AMD/AU
  • CEOS
  • AMD
  • ACE/CRC
NASA/GCMD Earth Science Keywords
  • OCEAN > SOUTHERN OCEAN > CLIVAR SR3 transect
  • GEOGRAPHIC REGION > POLAR

Resource constraints

Use limitation
This metadata record is publicly available.

Resource constraints

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licence
Other constraints
These data are publicly available for download from the provided URL.

Resource constraints

File type
Portable Network Graphic
Linkage
Creative Commons by Attribution logo

Title
Attribution 4.0 International (CC BY 4.0)
Website
https://creativecommons.org/licenses/by/4.0/legalcode

Legal code for Creative Commons by Attribution 4.0 International license

Use constraints
licence
Other constraints
This data set conforms to the CCBY Attribution License (http://creativecommons.org/licenses/by/4.0/). Please follow instructions listed in the citation reference at the provided http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=ASAC_1301 when using these data.
Language
English
Character encoding
UTF8

Distribution Information

Distributor

Distributor

AU/AADC > Australian Antarctic Data Centre, Australia - AADC, DATA OFFICER (DATA CENTER CONTACT)
Australian Antarctic Division
203 Channel Highway
Kingston
Tasmania
7050
Australia

Distributor

Fees
Free
Planned available datetime
2013-12-06T00:00:00

Distributor

Fees
Free
Planned available datetime
2013-12-06T00:00:00
Units of distribution
kb
Transfer size
67
Distribution format
  • Excel

Units of distribution
kb
Transfer size
145
Distribution format
  • pdf

OnLine resource
GET DATA

Download point for the data

OnLine resource
PROJECT HOME PAGE

Public information for ASAC project 1301

OnLine resource
VIEW RELATED INFORMATION

Download point for the referenced publication

OnLine resource
VIEW RELATED INFORMATION

Citation reference for this metadata record and dataset

Resource lineage

Statement
See the referenced paper for more information.
Hierarchy level
Dataset
Maintenance and update frequency
As needed
Maintenance note
2002-05-19, updated PI contact details, data details 2012-10-05 - record deleted by Dave Connell as data were not forthcoming. 2013-12-06 - record re-instated by Dave Connell after data were provided by Andrew Bowie. 2015-05-28 - record updated by Dave Connell - basic updates.

Metadata

Metadata identifier
string/ASAC_1301

Language
English
Character encoding
UTF8

Author

CONNELL, DAVE J.
Australian Antarctic Division
203 Channel Highway
Kingston
Tasmania
7050
Australia

Sponsor

Australian Antarctic Division

Owner

AADC

Type of resource

Resource scope
Dataset

Alternative metadata reference

Title
gov.nasa.gsfc.gcmd
Citation identifier
d07b71f0-5373-4ef5-996e-e726024f2c72

Alternative metadata reference

Title
gov.nasa.gsfc.gcmd
Date (Last Revision)
2015-11-30T04:49:57

Identifier

Description
metadata.extraction_date

Alternative metadata reference

Title
gov.nasa.gsfc.gcmd
Citation identifier
8.6

Metadata linkage
http://data.aad.gov.au/metadata/records/ASAC_1301

Point of truth for the metadata record

Date info (Creation)
2001-04-09T00:00:00
Date info (Last Update)
2017-04-26

Metadata standard

Title
ISO 19115-3
Edition
2014
Other citation details
Version 1
Title
DIF to ISO 19115-1 Profile
 
 

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