Elevation, volume and terminus changes of nine glaciers in North America
Abstract Nine glaciers in Alaska and Washington, U.S.A., originally mapped as part of the International Geophysical Year (IGY) in 1957—58, were re-mapped between 1993 and 1996, eight using airborne surface elevation profiling and the ninth using ground-based kinematic global positioning system metho...
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1998
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Online Access: | http://dx.doi.org/10.1017/s0022143000002410 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000002410 |
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crcambridgeupr:10.1017/s0022143000002410 2024-09-15T18:08:02+00:00 Elevation, volume and terminus changes of nine glaciers in North America Sapiano, J. J. Harrison, W. D. Echelmeyer, K. A. 1998 http://dx.doi.org/10.1017/s0022143000002410 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000002410 en eng Cambridge University Press (CUP) Journal of Glaciology volume 44, issue 146, page 119-135 ISSN 0022-1430 1727-5652 journal-article 1998 crcambridgeupr https://doi.org/10.1017/s0022143000002410 2024-07-24T04:03:23Z Abstract Nine glaciers in Alaska and Washington, U.S.A., originally mapped as part of the International Geophysical Year (IGY) in 1957—58, were re-mapped between 1993 and 1996, eight using airborne surface elevation profiling and the ninth using ground-based kinematic global positioning system methods. Elevation, volume and terminus changes were determined for the approximately 38 year period between the IGY mapping and the profiling, All nine glaciers showed substantial thinning at lower elevations; seven of the nine thickened at higher elevations. None of the glaciers had a significant net volume increase; two had close to zero change, and the others had a decrease. For the eight glaciers for which we could obtain quantitative information, the mean thickness change was -10 m with a large scatter, 8 m standard deviation. The volume and terminus changes had no clear geographic pattern, and no simple relationship between volume change and terminus advance or retreat was identified. The largest error in the estimated volume changes is due to map errors. Article in Journal/Newspaper glaciers Journal of Glaciology Alaska Cambridge University Press Journal of Glaciology 44 146 119 135 |
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Open Polar |
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Cambridge University Press |
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crcambridgeupr |
language |
English |
description |
Abstract Nine glaciers in Alaska and Washington, U.S.A., originally mapped as part of the International Geophysical Year (IGY) in 1957—58, were re-mapped between 1993 and 1996, eight using airborne surface elevation profiling and the ninth using ground-based kinematic global positioning system methods. Elevation, volume and terminus changes were determined for the approximately 38 year period between the IGY mapping and the profiling, All nine glaciers showed substantial thinning at lower elevations; seven of the nine thickened at higher elevations. None of the glaciers had a significant net volume increase; two had close to zero change, and the others had a decrease. For the eight glaciers for which we could obtain quantitative information, the mean thickness change was -10 m with a large scatter, 8 m standard deviation. The volume and terminus changes had no clear geographic pattern, and no simple relationship between volume change and terminus advance or retreat was identified. The largest error in the estimated volume changes is due to map errors. |
format |
Article in Journal/Newspaper |
author |
Sapiano, J. J. Harrison, W. D. Echelmeyer, K. A. |
spellingShingle |
Sapiano, J. J. Harrison, W. D. Echelmeyer, K. A. Elevation, volume and terminus changes of nine glaciers in North America |
author_facet |
Sapiano, J. J. Harrison, W. D. Echelmeyer, K. A. |
author_sort |
Sapiano, J. J. |
title |
Elevation, volume and terminus changes of nine glaciers in North America |
title_short |
Elevation, volume and terminus changes of nine glaciers in North America |
title_full |
Elevation, volume and terminus changes of nine glaciers in North America |
title_fullStr |
Elevation, volume and terminus changes of nine glaciers in North America |
title_full_unstemmed |
Elevation, volume and terminus changes of nine glaciers in North America |
title_sort |
elevation, volume and terminus changes of nine glaciers in north america |
publisher |
Cambridge University Press (CUP) |
publishDate |
1998 |
url |
http://dx.doi.org/10.1017/s0022143000002410 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000002410 |
genre |
glaciers Journal of Glaciology Alaska |
genre_facet |
glaciers Journal of Glaciology Alaska |
op_source |
Journal of Glaciology volume 44, issue 146, page 119-135 ISSN 0022-1430 1727-5652 |
op_doi |
https://doi.org/10.1017/s0022143000002410 |
container_title |
Journal of Glaciology |
container_volume |
44 |
container_issue |
146 |
container_start_page |
119 |
op_container_end_page |
135 |
_version_ |
1810445381793742848 |