Hintereisferner, Austria: mass-balance reconstruction and numerical modelling of the historical length variations
Abstract In this study, an attempt is made to simulate the historical length variations of Hintereisferner (Austria). Key elements in the model are: (1) reconstruction of the local climate (Vent); (2) multiple linear regression analysis between measured climate and mass-balance variations; (3) recon...
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Cambridge University Press (CUP)
1992
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Online Access: | http://dx.doi.org/10.1017/s0022143000003646 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000003646 |
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crcambridgeupr:10.1017/s0022143000003646 2024-03-03T08:46:02+00:00 Hintereisferner, Austria: mass-balance reconstruction and numerical modelling of the historical length variations Greuell, W. 1992 http://dx.doi.org/10.1017/s0022143000003646 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000003646 en eng Cambridge University Press (CUP) Journal of Glaciology volume 38, issue 129, page 233-244 ISSN 0022-1430 1727-5652 Earth-Surface Processes journal-article 1992 crcambridgeupr https://doi.org/10.1017/s0022143000003646 2024-02-08T08:34:04Z Abstract In this study, an attempt is made to simulate the historical length variations of Hintereisferner (Austria). Key elements in the model are: (1) reconstruction of the local climate (Vent); (2) multiple linear regression analysis between measured climate and mass-balance variations; (3) reconstruction of the mass balance with (1) and (2); (4) a one-dimensional numerical ice-flow model forced by the mass-balance history. Progress relative to the previous, similar studies can be summarized as two points: (1) the mass balance is reconstructed more carefully, and (2) sensitivity experiments show that uncertainties and assumptions in the flow model hardly affect the response of the glacier to climate fluctuations with a time-scale of the order of (or larger than) the response time of the glacier (around 100 year). In the regression equation, mass-balance fluctuations are determined by the temperature during the ablation season and the annual precipitation. Cloudiness has no effect. The local temperature can be reconstructed as far back as 1755 with the temperature series from Basel, but the reconstruction of precipitation is unreliable prior to 1900. Mainly due to this point, a simulation starting in 1755 failed completely. However, in a run starting in 1894, the total retreat since then (2.2 km) was reproduced within 10%. Article in Journal/Newspaper Journal of Glaciology Cambridge University Press Journal of Glaciology 38 129 233 244 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Earth-Surface Processes |
spellingShingle |
Earth-Surface Processes Greuell, W. Hintereisferner, Austria: mass-balance reconstruction and numerical modelling of the historical length variations |
topic_facet |
Earth-Surface Processes |
description |
Abstract In this study, an attempt is made to simulate the historical length variations of Hintereisferner (Austria). Key elements in the model are: (1) reconstruction of the local climate (Vent); (2) multiple linear regression analysis between measured climate and mass-balance variations; (3) reconstruction of the mass balance with (1) and (2); (4) a one-dimensional numerical ice-flow model forced by the mass-balance history. Progress relative to the previous, similar studies can be summarized as two points: (1) the mass balance is reconstructed more carefully, and (2) sensitivity experiments show that uncertainties and assumptions in the flow model hardly affect the response of the glacier to climate fluctuations with a time-scale of the order of (or larger than) the response time of the glacier (around 100 year). In the regression equation, mass-balance fluctuations are determined by the temperature during the ablation season and the annual precipitation. Cloudiness has no effect. The local temperature can be reconstructed as far back as 1755 with the temperature series from Basel, but the reconstruction of precipitation is unreliable prior to 1900. Mainly due to this point, a simulation starting in 1755 failed completely. However, in a run starting in 1894, the total retreat since then (2.2 km) was reproduced within 10%. |
format |
Article in Journal/Newspaper |
author |
Greuell, W. |
author_facet |
Greuell, W. |
author_sort |
Greuell, W. |
title |
Hintereisferner, Austria: mass-balance reconstruction and numerical modelling of the historical length variations |
title_short |
Hintereisferner, Austria: mass-balance reconstruction and numerical modelling of the historical length variations |
title_full |
Hintereisferner, Austria: mass-balance reconstruction and numerical modelling of the historical length variations |
title_fullStr |
Hintereisferner, Austria: mass-balance reconstruction and numerical modelling of the historical length variations |
title_full_unstemmed |
Hintereisferner, Austria: mass-balance reconstruction and numerical modelling of the historical length variations |
title_sort |
hintereisferner, austria: mass-balance reconstruction and numerical modelling of the historical length variations |
publisher |
Cambridge University Press (CUP) |
publishDate |
1992 |
url |
http://dx.doi.org/10.1017/s0022143000003646 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000003646 |
genre |
Journal of Glaciology |
genre_facet |
Journal of Glaciology |
op_source |
Journal of Glaciology volume 38, issue 129, page 233-244 ISSN 0022-1430 1727-5652 |
op_doi |
https://doi.org/10.1017/s0022143000003646 |
container_title |
Journal of Glaciology |
container_volume |
38 |
container_issue |
129 |
container_start_page |
233 |
op_container_end_page |
244 |
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1792501841938874368 |