Heard Island- Glacier extents mapped from satellite imagery and aerial photography.
Abstract from: 'An inventory of present glaciers on Heard Island and their historical variation' by Andrew Ruddell.\r\n\r\n Heard Island is a large ice-covered volcanic cone situated in the south Indian Ocean. Its location enables unique climatic information to be obtained from a very remo...
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Online Access: | https://researchdata.edu.au/heard-island-glacier-aerial-photography/1434822 http://data.gov.au/dataset/4afdf6a6-ea9e-4204-bb08-1160736f818a |
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ftands:oai:ands.org.au::1434822 2023-09-05T13:12:58+02:00 Heard Island- Glacier extents mapped from satellite imagery and aerial photography. Australian Antarctic Division (isOwnedBy) Spatial: 73.5,-53.085 73.55,-53.085 73.55,-52.08 73.5,-52.08 73.5,-53.085 https://researchdata.edu.au/heard-island-glacier-aerial-photography/1434822 http://data.gov.au/dataset/4afdf6a6-ea9e-4204-bb08-1160736f818a unknown data.gov.au https://researchdata.edu.au/heard-island-glacier-aerial-photography/1434822 http://data.gov.au/dataset/4afdf6a6-ea9e-4204-bb08-1160736f818a aad-heard-glacier-gis Australian Antarctic Division AERIAL PHOTOGRAPHS AMD AMD-AU BUTTRESS CEOS CONTINENT - ANTARCTICA DEM - Digital Elevation Model EARTH SCIENCE - CRYOSPHERE - GLACIERS-ICE SHEETS - GLACIERS EARTH SCIENCE - CRYOSPHERE - SNOW-ICE - ICE EXTENT EARTH SCIENCE - CRYOSPHERE - SNOW-ICE - ICE GROWTH-MELT EARTH SCIENCE - CRYOSPHERE - SNOW-ICE - SNOW COVER EARTH SCIENCE - CRYOSPHERE - SNOW-ICE - SNOW MELT EARTH SCIENCE - LAND SURFACE - GEOMORPHIC LANDFORMS-PROCESSES - GLACIAL PROCESSES GEOGRAPHIC REGION - POLAR GIS GLACIER HEARD ISLAND OCEAN - SOUTHERN OCEAN - HEARD AND MCDONALD ISLANDS OCEAN - SOUTHERN OCEAN - Heard Island ROCK SNOW SNOW BOUNDARY dataset ftands 2023-08-14T22:32:41Z Abstract from: 'An inventory of present glaciers on Heard Island and their historical variation' by Andrew Ruddell.\r\n\r\n Heard Island is a large ice-covered volcanic cone situated in the south Indian Ocean. Its location enables unique climatic information to be obtained from a very remote and predominantly maritime region. Past studies show that while some glaciers have undergone major recession since the late 1940s, others, such as large non-calving glaciers, have shown little change in extent. The island is usually cloud covered and this has hampered aerial and ground based surveys. Using SPOT satellite imagery acquired in 1988 and supplemented by aerial photography in 1987 and a digital elevation model derived from 1997 Radarsat imagery, an inventory of glacier extent is provided and this indicates that there are a total of 29 glaciated basins (41 termini), with an area of 257 km2 and an estimated volume of 14.2 km3. The satellite imagery is used to rectify earlier estimates of glacier extent based on aerial photography in 1947 and 1980. Between 1947 and 1988 the glaciated area had decreased by 11% and volume by 12%. Approximately half of this occurred during the 1980s.\r\n\r\n A variety of historical records have been compiled and these provide evidence of glacier behaviour since the mid-1800s when they were at their greatest extent during the recorded period. The elevation range of a glacier is a good indication of glacier hypsometry and its sensitivity to mass balance and climate variations. Glaciers such as the Gotley are of large elevation range and high mass turnover. Such glaciers show little sensitivity to climate variations as they lose much of their ice through calving into the sea rather than surface melt. Glaciers of low elevation range such as those on the Laurens Peninsula are especially sensitive to climate change. Glaciers of this type indicate that while minor decadal fluctuations have occurred in the period from at least 1902 to the 1950s, the recession of many glaciers during the past 50 ... Dataset Antarc* Antarctica Heard Island McDonald Islands Southern Ocean Research Data Australia (Australian National Data Service - ANDS) Southern Ocean Heard Island Indian Heard Island ENVELOPE(73.510,73.510,-53.117,-53.117) Heard ENVELOPE(73.510,73.510,-53.117,-53.117) McDonald Islands ENVELOPE(72.600,72.600,-53.033,-53.033) Buttress ENVELOPE(-57.083,-57.083,-63.550,-63.550) Laurens Peninsula ENVELOPE(73.300,73.300,-53.000,-53.000) Gotley ENVELOPE(57.294,57.294,-66.696,-66.696) |
institution |
Open Polar |
collection |
Research Data Australia (Australian National Data Service - ANDS) |
op_collection_id |
ftands |
language |
unknown |
topic |
AERIAL PHOTOGRAPHS AMD AMD-AU BUTTRESS CEOS CONTINENT - ANTARCTICA DEM - Digital Elevation Model EARTH SCIENCE - CRYOSPHERE - GLACIERS-ICE SHEETS - GLACIERS EARTH SCIENCE - CRYOSPHERE - SNOW-ICE - ICE EXTENT EARTH SCIENCE - CRYOSPHERE - SNOW-ICE - ICE GROWTH-MELT EARTH SCIENCE - CRYOSPHERE - SNOW-ICE - SNOW COVER EARTH SCIENCE - CRYOSPHERE - SNOW-ICE - SNOW MELT EARTH SCIENCE - LAND SURFACE - GEOMORPHIC LANDFORMS-PROCESSES - GLACIAL PROCESSES GEOGRAPHIC REGION - POLAR GIS GLACIER HEARD ISLAND OCEAN - SOUTHERN OCEAN - HEARD AND MCDONALD ISLANDS OCEAN - SOUTHERN OCEAN - Heard Island ROCK SNOW SNOW BOUNDARY |
spellingShingle |
AERIAL PHOTOGRAPHS AMD AMD-AU BUTTRESS CEOS CONTINENT - ANTARCTICA DEM - Digital Elevation Model EARTH SCIENCE - CRYOSPHERE - GLACIERS-ICE SHEETS - GLACIERS EARTH SCIENCE - CRYOSPHERE - SNOW-ICE - ICE EXTENT EARTH SCIENCE - CRYOSPHERE - SNOW-ICE - ICE GROWTH-MELT EARTH SCIENCE - CRYOSPHERE - SNOW-ICE - SNOW COVER EARTH SCIENCE - CRYOSPHERE - SNOW-ICE - SNOW MELT EARTH SCIENCE - LAND SURFACE - GEOMORPHIC LANDFORMS-PROCESSES - GLACIAL PROCESSES GEOGRAPHIC REGION - POLAR GIS GLACIER HEARD ISLAND OCEAN - SOUTHERN OCEAN - HEARD AND MCDONALD ISLANDS OCEAN - SOUTHERN OCEAN - Heard Island ROCK SNOW SNOW BOUNDARY Heard Island- Glacier extents mapped from satellite imagery and aerial photography. |
topic_facet |
AERIAL PHOTOGRAPHS AMD AMD-AU BUTTRESS CEOS CONTINENT - ANTARCTICA DEM - Digital Elevation Model EARTH SCIENCE - CRYOSPHERE - GLACIERS-ICE SHEETS - GLACIERS EARTH SCIENCE - CRYOSPHERE - SNOW-ICE - ICE EXTENT EARTH SCIENCE - CRYOSPHERE - SNOW-ICE - ICE GROWTH-MELT EARTH SCIENCE - CRYOSPHERE - SNOW-ICE - SNOW COVER EARTH SCIENCE - CRYOSPHERE - SNOW-ICE - SNOW MELT EARTH SCIENCE - LAND SURFACE - GEOMORPHIC LANDFORMS-PROCESSES - GLACIAL PROCESSES GEOGRAPHIC REGION - POLAR GIS GLACIER HEARD ISLAND OCEAN - SOUTHERN OCEAN - HEARD AND MCDONALD ISLANDS OCEAN - SOUTHERN OCEAN - Heard Island ROCK SNOW SNOW BOUNDARY |
description |
Abstract from: 'An inventory of present glaciers on Heard Island and their historical variation' by Andrew Ruddell.\r\n\r\n Heard Island is a large ice-covered volcanic cone situated in the south Indian Ocean. Its location enables unique climatic information to be obtained from a very remote and predominantly maritime region. Past studies show that while some glaciers have undergone major recession since the late 1940s, others, such as large non-calving glaciers, have shown little change in extent. The island is usually cloud covered and this has hampered aerial and ground based surveys. Using SPOT satellite imagery acquired in 1988 and supplemented by aerial photography in 1987 and a digital elevation model derived from 1997 Radarsat imagery, an inventory of glacier extent is provided and this indicates that there are a total of 29 glaciated basins (41 termini), with an area of 257 km2 and an estimated volume of 14.2 km3. The satellite imagery is used to rectify earlier estimates of glacier extent based on aerial photography in 1947 and 1980. Between 1947 and 1988 the glaciated area had decreased by 11% and volume by 12%. Approximately half of this occurred during the 1980s.\r\n\r\n A variety of historical records have been compiled and these provide evidence of glacier behaviour since the mid-1800s when they were at their greatest extent during the recorded period. The elevation range of a glacier is a good indication of glacier hypsometry and its sensitivity to mass balance and climate variations. Glaciers such as the Gotley are of large elevation range and high mass turnover. Such glaciers show little sensitivity to climate variations as they lose much of their ice through calving into the sea rather than surface melt. Glaciers of low elevation range such as those on the Laurens Peninsula are especially sensitive to climate change. Glaciers of this type indicate that while minor decadal fluctuations have occurred in the period from at least 1902 to the 1950s, the recession of many glaciers during the past 50 ... |
author2 |
Australian Antarctic Division (isOwnedBy) |
format |
Dataset |
title |
Heard Island- Glacier extents mapped from satellite imagery and aerial photography. |
title_short |
Heard Island- Glacier extents mapped from satellite imagery and aerial photography. |
title_full |
Heard Island- Glacier extents mapped from satellite imagery and aerial photography. |
title_fullStr |
Heard Island- Glacier extents mapped from satellite imagery and aerial photography. |
title_full_unstemmed |
Heard Island- Glacier extents mapped from satellite imagery and aerial photography. |
title_sort |
heard island- glacier extents mapped from satellite imagery and aerial photography. |
publisher |
data.gov.au |
url |
https://researchdata.edu.au/heard-island-glacier-aerial-photography/1434822 http://data.gov.au/dataset/4afdf6a6-ea9e-4204-bb08-1160736f818a |
op_coverage |
Spatial: 73.5,-53.085 73.55,-53.085 73.55,-52.08 73.5,-52.08 73.5,-53.085 |
long_lat |
ENVELOPE(73.510,73.510,-53.117,-53.117) ENVELOPE(73.510,73.510,-53.117,-53.117) ENVELOPE(72.600,72.600,-53.033,-53.033) ENVELOPE(-57.083,-57.083,-63.550,-63.550) ENVELOPE(73.300,73.300,-53.000,-53.000) ENVELOPE(57.294,57.294,-66.696,-66.696) |
geographic |
Southern Ocean Heard Island Indian Heard Island Heard McDonald Islands Buttress Laurens Peninsula Gotley |
geographic_facet |
Southern Ocean Heard Island Indian Heard Island Heard McDonald Islands Buttress Laurens Peninsula Gotley |
genre |
Antarc* Antarctica Heard Island McDonald Islands Southern Ocean |
genre_facet |
Antarc* Antarctica Heard Island McDonald Islands Southern Ocean |
op_source |
Australian Antarctic Division |
op_relation |
https://researchdata.edu.au/heard-island-glacier-aerial-photography/1434822 http://data.gov.au/dataset/4afdf6a6-ea9e-4204-bb08-1160736f818a aad-heard-glacier-gis |
_version_ |
1776202541489455104 |