Snow stratigraphy observations in the katabatic wind region of eastern Wilkes Land, Antarctica.
Stratigraphical measurements to a depth of 2-3m in puts were made along a glaciological traverse route from 68.35.S, 113.19E to 69.00S, 130.48E at approximately 2000m elevation in Wilkes Land, Eastern Antarctica. Observations of the snow surface and meteorological conditions began on 29 August and c...
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Online Access: | https://researchdata.ands.org.au/snow-stratigraphy-observations-land-antarctica/699300 https://doi.org/10.4225/15/547800FA6A5CE https://data.aad.gov.au/metadata/records/ANARE-17 http://nla.gov.au/nla.party-617536 |
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ftands:oai:ands.org.au::699300 2023-05-15T13:46:57+02:00 Snow stratigraphy observations in the katabatic wind region of eastern Wilkes Land, Antarctica. JONES, DAMIEN (hasPrincipalInvestigator) ALLISON, IAN (processor) Australian Antarctic Data Centre (publisher) Spatial: northlimit=-69.0; southlimit=-69.0; westlimit=120.0; eastLimit=120.0; projection=WGS84 Temporal: From 1982-08-29 to 1982-11-20 https://researchdata.ands.org.au/snow-stratigraphy-observations-land-antarctica/699300 https://doi.org/10.4225/15/547800FA6A5CE https://data.aad.gov.au/metadata/records/ANARE-17 http://nla.gov.au/nla.party-617536 unknown Australian Antarctic Data Centre https://researchdata.ands.org.au/snow-stratigraphy-observations-land-antarctica/699300 69cd7420-117c-4d90-b310-261a34e7c052 doi:10.4225/15/547800FA6A5CE ANARE-17 https://data.aad.gov.au/metadata/records/ANARE-17 http://nla.gov.au/nla.party-617536 Australian Antarctic Data Centre geoscientificInformation inlandWaters SNOW COVER EARTH SCIENCE CRYOSPHERE SNOW/ICE SNOW DENSITY SNOW DEPTH DEEP-HOAR METEOROLOGICAL CONDITIONS PRESSURE SASTRUGI SNOW SURFACE STRATIGRAPHICAL MEASUREMENTS TEMPERATURE WILKES LAND EASTERN ANTARCTICA WIND SPEED CONTINENT > ANTARCTICA > GEOGRAPHIC REGION > POLAR dataset ftands https://doi.org/10.4225/15/547800FA6A5CE 2020-01-05T21:16:02Z Stratigraphical measurements to a depth of 2-3m in puts were made along a glaciological traverse route from 68.35.S, 113.19E to 69.00S, 130.48E at approximately 2000m elevation in Wilkes Land, Eastern Antarctica. Observations of the snow surface and meteorological conditions began on 29 August and continued until 28 December whilst the stratigraphical measurements were made between 28 September and 20 November 1982. The traverse route lies entirely in the katabatic wind region which encircles the central plateau. The snow surface which develops under the influence of such a constant wind was observed to have some interesting properties. (1) A very hard crust had developed by Sept (early Spring) and this was covered by a thin (1mm) icy glaze. There were observed in conjunction over the length of the traverse and over several years of accumulation as measured in the pits. It is suggested that the glaze is formed by the dissipation of the kinetic energy of drift by friction and the crust by 'sintering' from vapour transport within the snow pack. (2) Erosional processes are very important in the development of the snow cover. Sastrugi were ubiquitous and reached heights of up to 60cm, thereby introducing noise levels sometimes equal to or greater than the annual layering observed in the pits. This complicates any inter-site correlation and disrupts the interpretation of annual layering from the stable isotope ratio, 18 O 16 0 (s18O) (3) The existence of temperature gradients within the snow surface sufficient for the formation of deep-hoar was inferred from its occurrence at least once in the most annual layers at each site. (4) Summer snow surfaces were considerably softer than those of winter and extensive layers of deep-hoar were observed to develop within them. The fields in this dataset are: Year Months Mean Temperature Maximum Temperature Minimum Temperature Mean Station Level Pressure Mean Wind Speed Maximum Wind Gust Days Strong Wind Days Gale Wind Mark Acc metres snow Period 1980-81 and 1981 Dataset Antarc* Antarctica Wilkes Land Research Data Australia (Australian National Data Service - ANDS) Sastrugi ENVELOPE(163.683,163.683,-74.617,-74.617) Wilkes Land ENVELOPE(120.000,120.000,-69.000,-69.000) ENVELOPE(120.0,120.0,-69.0,-69.0) |
institution |
Open Polar |
collection |
Research Data Australia (Australian National Data Service - ANDS) |
op_collection_id |
ftands |
language |
unknown |
topic |
geoscientificInformation inlandWaters SNOW COVER EARTH SCIENCE CRYOSPHERE SNOW/ICE SNOW DENSITY SNOW DEPTH DEEP-HOAR METEOROLOGICAL CONDITIONS PRESSURE SASTRUGI SNOW SURFACE STRATIGRAPHICAL MEASUREMENTS TEMPERATURE WILKES LAND EASTERN ANTARCTICA WIND SPEED CONTINENT > ANTARCTICA > GEOGRAPHIC REGION > POLAR |
spellingShingle |
geoscientificInformation inlandWaters SNOW COVER EARTH SCIENCE CRYOSPHERE SNOW/ICE SNOW DENSITY SNOW DEPTH DEEP-HOAR METEOROLOGICAL CONDITIONS PRESSURE SASTRUGI SNOW SURFACE STRATIGRAPHICAL MEASUREMENTS TEMPERATURE WILKES LAND EASTERN ANTARCTICA WIND SPEED CONTINENT > ANTARCTICA > GEOGRAPHIC REGION > POLAR Snow stratigraphy observations in the katabatic wind region of eastern Wilkes Land, Antarctica. |
topic_facet |
geoscientificInformation inlandWaters SNOW COVER EARTH SCIENCE CRYOSPHERE SNOW/ICE SNOW DENSITY SNOW DEPTH DEEP-HOAR METEOROLOGICAL CONDITIONS PRESSURE SASTRUGI SNOW SURFACE STRATIGRAPHICAL MEASUREMENTS TEMPERATURE WILKES LAND EASTERN ANTARCTICA WIND SPEED CONTINENT > ANTARCTICA > GEOGRAPHIC REGION > POLAR |
description |
Stratigraphical measurements to a depth of 2-3m in puts were made along a glaciological traverse route from 68.35.S, 113.19E to 69.00S, 130.48E at approximately 2000m elevation in Wilkes Land, Eastern Antarctica. Observations of the snow surface and meteorological conditions began on 29 August and continued until 28 December whilst the stratigraphical measurements were made between 28 September and 20 November 1982. The traverse route lies entirely in the katabatic wind region which encircles the central plateau. The snow surface which develops under the influence of such a constant wind was observed to have some interesting properties. (1) A very hard crust had developed by Sept (early Spring) and this was covered by a thin (1mm) icy glaze. There were observed in conjunction over the length of the traverse and over several years of accumulation as measured in the pits. It is suggested that the glaze is formed by the dissipation of the kinetic energy of drift by friction and the crust by 'sintering' from vapour transport within the snow pack. (2) Erosional processes are very important in the development of the snow cover. Sastrugi were ubiquitous and reached heights of up to 60cm, thereby introducing noise levels sometimes equal to or greater than the annual layering observed in the pits. This complicates any inter-site correlation and disrupts the interpretation of annual layering from the stable isotope ratio, 18 O 16 0 (s18O) (3) The existence of temperature gradients within the snow surface sufficient for the formation of deep-hoar was inferred from its occurrence at least once in the most annual layers at each site. (4) Summer snow surfaces were considerably softer than those of winter and extensive layers of deep-hoar were observed to develop within them. The fields in this dataset are: Year Months Mean Temperature Maximum Temperature Minimum Temperature Mean Station Level Pressure Mean Wind Speed Maximum Wind Gust Days Strong Wind Days Gale Wind Mark Acc metres snow Period 1980-81 and 1981 |
author2 |
JONES, DAMIEN (hasPrincipalInvestigator) ALLISON, IAN (processor) Australian Antarctic Data Centre (publisher) |
format |
Dataset |
title |
Snow stratigraphy observations in the katabatic wind region of eastern Wilkes Land, Antarctica. |
title_short |
Snow stratigraphy observations in the katabatic wind region of eastern Wilkes Land, Antarctica. |
title_full |
Snow stratigraphy observations in the katabatic wind region of eastern Wilkes Land, Antarctica. |
title_fullStr |
Snow stratigraphy observations in the katabatic wind region of eastern Wilkes Land, Antarctica. |
title_full_unstemmed |
Snow stratigraphy observations in the katabatic wind region of eastern Wilkes Land, Antarctica. |
title_sort |
snow stratigraphy observations in the katabatic wind region of eastern wilkes land, antarctica. |
publisher |
Australian Antarctic Data Centre |
url |
https://researchdata.ands.org.au/snow-stratigraphy-observations-land-antarctica/699300 https://doi.org/10.4225/15/547800FA6A5CE https://data.aad.gov.au/metadata/records/ANARE-17 http://nla.gov.au/nla.party-617536 |
op_coverage |
Spatial: northlimit=-69.0; southlimit=-69.0; westlimit=120.0; eastLimit=120.0; projection=WGS84 Temporal: From 1982-08-29 to 1982-11-20 |
long_lat |
ENVELOPE(163.683,163.683,-74.617,-74.617) ENVELOPE(120.000,120.000,-69.000,-69.000) ENVELOPE(120.0,120.0,-69.0,-69.0) |
geographic |
Sastrugi Wilkes Land |
geographic_facet |
Sastrugi Wilkes Land |
genre |
Antarc* Antarctica Wilkes Land |
genre_facet |
Antarc* Antarctica Wilkes Land |
op_source |
Australian Antarctic Data Centre |
op_relation |
https://researchdata.ands.org.au/snow-stratigraphy-observations-land-antarctica/699300 69cd7420-117c-4d90-b310-261a34e7c052 doi:10.4225/15/547800FA6A5CE ANARE-17 https://data.aad.gov.au/metadata/records/ANARE-17 http://nla.gov.au/nla.party-617536 |
op_doi |
https://doi.org/10.4225/15/547800FA6A5CE |
_version_ |
1766245814208823296 |