Data

Corrosivity Mapping of Antarctica utilising exposure of standard alloy coupons

Australian Antarctic Division
Pearson, C. ; PEARSON, COLIN
Viewed: [[ro.stat.viewed]] Cited: [[ro.stat.cited]] Accessed: [[ro.stat.accessed]]
ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=http://data.aad.gov.au/metadata/ASAC_537&rft.title=Corrosivity Mapping of Antarctica utilising exposure of standard alloy coupons&rft.identifier=http://data.aad.gov.au/metadata/ASAC_537&rft.publisher=Australian Antarctic Data Centre&rft.description=Antarctica is the world's coldest, driest, highest and least polluted continent. Accepted wisdom is that atmospheric corrosion rates in Antarctica should be low because of the extreme dry cold. Russian research suggested that temperatures below 0 degrees C alone are insufficient to eliminate corrosion although temperatures consistently below -25 degrees C will markedly decrease corrosivity. The severe and unfamiliar Antarctic conditions challenge assumptions about the behaviour of materials. In the 1960's, snow and ice was removed from Captain Scott's hut at Cape Evens revealing buried artefacts in excellent condition. The excavation changed the microclimate radically and significant deterioration of several materials, especially metals, has since occurred. The need to objectively measure corrosivity arose from the unexpectedly severe corrosion problems at several historic sites and the need to develop treatment and preventative conservation strategies. Significant corrosion problems also affect old sealing and whaling stations and artefacts on subantarctic islands. International cooperation has been sought to enable the exposure of standard steel coupons and measurement of atmospheric corrosivity rates in different climate zones in Antarctica. Ten locations on the continent and various sites on four subantarctic islands have been monitored, chosen because of the potential to access the site and availability of meteorological data from research bases and automatic weather stations. Observations are that the method is sufficiently sensitive to measure low rates of corrosion. The results are consistent with the Russian hyopothesis that temperatures below 0 degrees C alone will not significantly reduce corrosion. Steel corrosion rates range by a factor of more than 500 in Antarctica from the coast to far inland. Temperatures at coastal sites rarely exceed freezing and never at inland sites. A highly significant factor is atmospheric salt deposition since rain is rare. This project has determined that the lowest corrosivity rate ever measured is at Vostok, the coldest place on earth, which is 1200 km from the sea.The Heard Island document available in pdf form at the provided URL is reproduced with the permission of the Papers and Proceedings of the Royal Society of Tasmania.The paper was published in the Heard Island volume by the Royal Society of Tasmania (GPO Box 1166M, Hobart 7001, Tasmania, Australia) from whom the entire volume is available for A$22; plus postage (A$2;.45) for orders from within Australia and A$20; plus postage (A$6; in Asia and the Pacific and A$9; elsewhere; payment in Australian currency) for orders from beyond Australia.The fields for this dataset are:distance from sea (km)days exposedcorrosivitymass loss (g)Blank loss (g)% blank lossProgress Code: completedStatement: Values provided in temporal coverage are approximate only.&rft.creator=Pearson, C. &rft.creator=PEARSON, COLIN &rft.date=2000&rft.coverage=westlimit=38.0; southlimit=-45.0; eastlimit=39.0; northlimit=-44.0&rft.coverage=westlimit=38.0; southlimit=-45.0; eastlimit=39.0; northlimit=-44.0&rft.coverage=westlimit=73.5; southlimit=-53.2; eastlimit=73.6; northlimit=-53.1&rft.coverage=westlimit=73.5; southlimit=-53.2; eastlimit=73.6; northlimit=-53.1&rft.coverage=westlimit=158.0; southlimit=-54.0; eastlimit=159.0; northlimit=-54.0&rft.coverage=westlimit=158.0; southlimit=-54.0; eastlimit=159.0; northlimit=-54.0&rft.coverage=westlimit=54.0; southlimit=-62.0; eastlimit=55.0; northlimit=-61.0&rft.coverage=westlimit=54.0; southlimit=-62.0; eastlimit=55.0; northlimit=-61.0&rft.coverage=westlimit=-180.0; southlimit=-90.0; eastlimit=180.0; northlimit=-61.0&rft.coverage=westlimit=-180.0; southlimit=-90.0; eastlimit=180.0; northlimit=-61.0&rft_rights=PDF copies of two of the referenced papers are available for download from the provided URL to AAD staff only.&rft_rights=Attribution 4.0 International (CC BY 4.0) https://creativecommons.org/licenses/by/4.0/legalcode&rft_rights=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_537 when using these data.&rft_rights=This metadata record is publicly available.&rft_subject=geoscientificInformation&rft_subject=EARTH SCIENCE > SOLID EARTH > GEOCHEMISTRY > GEOCHEMICAL PROCESSES > OXIDATION/REDUCTION&rft_subject=% BLANK LOSS&rft_subject=ANTARCTIC&rft_subject=BLANK LOSS (G)&rft_subject=COLD CLIMATE&rft_subject=CORROSIVITY&rft_subject=DAYS EXPOSED&rft_subject=DISTANCE FROM SEA (KM)&rft_subject=MASS LOSS (G)&rft_subject=SALT DEPOSITION&rft_subject=SUBANTARCTIC&rft_subject=AMD/AU&rft_subject=CEOS&rft_subject=AMD&rft_subject=OCEAN > SOUTHERN OCEAN > Marion Island&rft_subject=OCEAN > SOUTHERN OCEAN > Signy&rft_subject=OCEAN > SOUTHERN OCEAN > MACQUARIE ISLAND > Isthmus&rft_subject=CONTINENT > ANTARCTICA > Rothera&rft_subject=CONTINENT > ANTARCTICA > Mawson&rft_subject=CONTINENT > ANTARCTICA > Vanda&rft_subject=CONTINENT > ANTARCTICA > Robertskollen&rft_subject=CONTINENT > ANTARCTICA > LGB00&rft_subject=CONTINENT > ANTARCTICA > LGB10&rft_subject=CONTINENT > ANTARCTICA > LGB35&rft_subject=CONTINENT > ANTARCTICA > Vostok&rft_subject=CONTINENT > ANTARCTICA > South Pole&rft_subject=GEOGRAPHIC REGION > POLAR&rft_subject=OCEAN > SOUTHERN OCEAN > HEARD AND MCDONALD ISLANDS&rft.type=dataset&rft.language=English Access the data
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CC-BY

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

PDF copies of two of the referenced papers are available for download from the provided URL to AAD staff only.

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_537 when using these data.

This metadata record is publicly available.

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Full description

Antarctica is the world's coldest, driest, highest and least polluted continent. Accepted wisdom is that atmospheric corrosion rates in Antarctica should be low because of the extreme dry cold. Russian research suggested that temperatures below 0 degrees C alone are insufficient to eliminate corrosion although temperatures consistently below -25 degrees C will markedly decrease corrosivity. The severe and unfamiliar Antarctic conditions challenge assumptions about the behaviour of materials. In the 1960's, snow and ice was removed from Captain Scott's hut at Cape Evens revealing buried artefacts in excellent condition. The excavation changed the microclimate radically and significant deterioration of several materials, especially metals, has since occurred. The need to objectively measure corrosivity arose from the unexpectedly severe corrosion problems at several historic sites and the need to develop treatment and preventative conservation strategies. Significant corrosion problems also affect old sealing and whaling stations and artefacts on subantarctic islands. International cooperation has been sought to enable the exposure of standard steel coupons and measurement of atmospheric corrosivity rates in different climate zones in Antarctica. Ten locations on the continent and various sites on four subantarctic islands have been monitored, chosen because of the potential to access the site and availability of meteorological data from research bases and automatic weather stations. Observations are that the method is sufficiently sensitive to measure low rates of corrosion. The results are consistent with the Russian hyopothesis that temperatures below 0 degrees C alone will not significantly reduce corrosion. Steel corrosion rates range by a factor of more than 500 in Antarctica from the coast to far inland. Temperatures at coastal sites rarely exceed freezing and never at inland sites. A highly significant factor is atmospheric salt deposition since rain is rare. This project has determined that the lowest corrosivity rate ever measured is at Vostok, the coldest place on earth, which is 1200 km from the sea.

The Heard Island document available in pdf form at the provided URL is reproduced with the permission of the Papers and Proceedings of the Royal Society of Tasmania.
The paper was published in the Heard Island volume by the Royal Society of Tasmania (GPO Box 1166M, Hobart 7001, Tasmania, Australia) from whom the entire volume is available for A$22; plus postage (A$2;.45) for orders from within Australia and A$20; plus postage (A$6; in Asia and the Pacific and A$9; elsewhere; payment in Australian currency) for orders from beyond Australia.

The fields for this dataset are:
distance from sea (km)
days exposed
corrosivity
mass loss (g)
Blank loss (g)
% blank loss

Lineage

Progress Code: completed
Statement: Values provided in temporal coverage are approximate only.

Data time period: 1991-09-30 to 1996-03-31

This dataset is part of a larger collection

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39,-44 39,-45 38,-45 38,-44 39,-44

38.5,-44.5

73.6,-53.1 73.6,-53.2 73.5,-53.2 73.5,-53.1 73.6,-53.1

73.55,-53.15

158,-54 159,-54

158.5,-54

55,-61 55,-62 54,-62 54,-61 55,-61

54.5,-61.5

180,-61 180,-86 0,-86 -180,-86 -180,-61 0,-61 180,-61

0,-75.5

text: westlimit=38.0; southlimit=-45.0; eastlimit=39.0; northlimit=-44.0

text: westlimit=73.5; southlimit=-53.2; eastlimit=73.6; northlimit=-53.1

text: westlimit=158.0; southlimit=-54.0; eastlimit=159.0; northlimit=-54.0

text: westlimit=54.0; southlimit=-62.0; eastlimit=55.0; northlimit=-61.0

text: westlimit=-180.0; southlimit=-90.0; eastlimit=180.0; northlimit=-61.0

Subjects
% BLANK LOSS | AMD | AMD/AU | ANTARCTIC | BLANK LOSS (G) | CEOS | COLD CLIMATE | CONTINENT > ANTARCTICA > LGB00 | CONTINENT > ANTARCTICA > LGB10 | CONTINENT > ANTARCTICA > LGB35 | CONTINENT > ANTARCTICA > Mawson | CONTINENT > ANTARCTICA > Robertskollen | CONTINENT > ANTARCTICA > Rothera | CONTINENT > ANTARCTICA > South Pole | CONTINENT > ANTARCTICA > Vanda | CONTINENT > ANTARCTICA > Vostok | CORROSIVITY | DAYS EXPOSED | DISTANCE FROM SEA (KM) | EARTH SCIENCE > SOLID EARTH > GEOCHEMISTRY > GEOCHEMICAL PROCESSES > OXIDATION/REDUCTION | GEOGRAPHIC REGION > POLAR | MASS LOSS (G) | OCEAN > SOUTHERN OCEAN > HEARD AND MCDONALD ISLANDS | OCEAN > SOUTHERN OCEAN > MACQUARIE ISLAND > Isthmus | OCEAN > SOUTHERN OCEAN > Marion Island | OCEAN > SOUTHERN OCEAN > Signy | SALT DEPOSITION | SUBANTARCTIC | geoscientificInformation |

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Other Information
Download page for Australian Antarctic Data Centre - AAS Staff Only (GET DATA)

uri : http://data.aad.gov.au/aadc/portal/download_file.cfm?file_id=834

Public information for ASAC project 537 (PROJECT HOME PAGE)

uri : https://projects.aad.gov.au/search_projects_results.cfm?project_no=537

Citation reference for this metadata record and dataset (VIEW RELATED INFORMATION)

uri : http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=ASAC_537

Identifiers
  • global : ASAC_537