Trace Element Chemistry of Antarctic Saline Lakes and Fjords

From the referenced paper:


The frigid concentration or freezing of seawater is an important natural phenomenon in the polar regions and results in the precipitation of a different sequence of salts - and thus produces brines of different composition - to that formed during isothermal evaporation under temperate conditions (about 20-25 degrees C). Seawater freezing, however, has been studied less extensively than evaporation and somewhat greater uncertainty exists over the exact nature of the compositional pathway followed. Most investigators have shown that the precipitation of mirabilite (Na2SO4 - 10 H2O) or gypsum (CaSO4 - 2 H2O), which both occur at the same seawater concentration factor (SWCF), is the critical difference between frigid and evaporative concentration, respectively, a consequence of the very different temperature dependence of the solubilities of these salts, as well as the effect of sodium chloride on these properties. This difference can be considered to represent a temperature-dependent chemical divide in the closed-basin concentration of seawater because it determines significantly the major ion composition of the brine and the salt mineral assemblage precipitated on further evolution of the system. Recently new insights into seawater freezing have been achieved through improvements in existing chemical equilibrium models. Along with the results of some associated experimental work, this has provided evidence for the formation of gypsum during freezing, contradicting the accepted Ringer-Nelson-Thompson model of frigid concentration firmly established in the 1950's and through subsequent studies, but validating an alternative model proposed by Gitterman two decades later.

Simple

Identification info

Alternate title
Trace Element Chemistry of Antarctic Saline Lakes and Fjords
Date (Publication)
2000-08-02
Edition
1

Originator

O'Grady, B.

Publisher

Australian Antarctic Data Centre

Principal investigator

O'GRADY, BARRY
Department of Chemistry
GPO BOX 252-75
University of Tasmania
Hobart
Tasmania
7001
Australia

Collaborator

O'GRADY, BARRY
Department of Chemistry
GPO BOX 252-75
University of Tasmania
Hobart
Tasmania
7001
Australia
Name
CAASM Metadata
Other citation details
Restricted access
Website
https://data.aad.gov.au/metadata/records/ASAC_568

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
  • Geoscientific information
  • Inland waters
  • Oceans

Extent

N
S
E
W


Extent

Description
Temporal Coverage

Temporal extent

TimePeriod
1992-10-01 1995-03-31
Title
Frigidly concentrated seawater and the evolution of Antarctic saline lakes
Date (Publication)
2003
Citation identifier
56

Author

Stark S.C., O'Grady B.V., Burton H.R., Carpenter P.D.
Name
Australian Journal of Chemistry
Page
181-186
NASA/GCMD Earth Science Keywords
  • EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > SNOW/ICE > LAKE ICE
  • EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > SURFACE WATER > SURFACE WATER FEATURES > LAKES/RESERVOIRS
  • EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > FRESHWATER ECOSYSTEMS > LAKE/POND > SALINE LAKES
Keywords
  • ANTARCTIC
  • ANTARCTICA
  • LAKES
  • SALINE LAKES
  • SEA WATER
  • VESTFOLD HILLS
NASA/GCMD Earth Science Keywords
  • AMD/AU
  • CEOS
  • AMD
NASA/GCMD Earth Science Keywords
  • CONTINENT > ANTARCTICA > Vestfold Hills
  • GEOGRAPHIC REGION > POLAR

Resource constraints

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This metadata record is publicly available.

Resource constraints

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licence
Other constraints
A PDF copy of the referenced paper is available for download from the provided URL to AAD staff only.

Resource constraints

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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 provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=ASAC_568 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
Units of distribution
KB
Transfer size
1476
Distribution format
  • PDF

OnLine resource
PROJECT HOME PAGE

Public information for ASAC project 568

OnLine resource
VIEW RELATED INFORMATION > PUBLICATIONS

Download point for the paper - AAD Staff Only

OnLine resource
VIEW RELATED INFORMATION

Citation reference for this metadata record and dataset

Resource lineage

Statement
Dates provided in temporal coverage are approximate only.
Hierarchy level
Dataset
Maintenance and update frequency
As needed
Maintenance note
2011-11-22 - record updated by Dave Connell - minor adjustments. 2016-11-15 - record updated by Dave Connell - basic updates.

Metadata

Metadata identifier
string/ASAC_568

Language
English
Character encoding
UTF8

Author

O'GRADY, BARRY
Department of Chemistry
GPO BOX 252-75
University of Tasmania
Hobart
Tasmania
7001
Australia

Sponsor

Australian Antarctic Division

Owner

AADC

Type of resource

Resource scope
Dataset

Alternative metadata reference

Title
gov.nasa.gsfc.gcmd
Citation identifier
e59ffdec-d36b-4736-8b10-9ef25d17b6c2

Alternative metadata reference

Title
gov.nasa.gsfc.gcmd
Date (Last Revision)
2015-11-29T18:45:22

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_568

Point of truth for the metadata record

Date info (Creation)
2000-08-02T00:00:00
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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