Thermal Regime of a Surge-Type Glacier
Abstract Recent measurements of near-surface temperature and surface velocity from the Variegated Glacier are presented. Temperature was measured with thermocouples at nine sites spaced along the length of the glacier. Maximum measurement depths ranged from 8 m in the lower ablation area to 20 m in...
Published in: | Journal of Glaciology |
---|---|
Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Cambridge University Press (CUP)
1976
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1017/s0022143000031579 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000031579 |
id |
crcambridgeupr:10.1017/s0022143000031579 |
---|---|
record_format |
openpolar |
spelling |
crcambridgeupr:10.1017/s0022143000031579 2024-03-03T08:46:01+00:00 Thermal Regime of a Surge-Type Glacier Bindschadler, Robert Harrison, William D. Raymond, Charles F. Gantet, Claude 1976 http://dx.doi.org/10.1017/s0022143000031579 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000031579 en eng Cambridge University Press (CUP) Journal of Glaciology volume 16, issue 74, page 251-259 ISSN 0022-1430 1727-5652 Earth-Surface Processes journal-article 1976 crcambridgeupr https://doi.org/10.1017/s0022143000031579 2024-02-08T08:40:23Z Abstract Recent measurements of near-surface temperature and surface velocity from the Variegated Glacier are presented. Temperature was measured with thermocouples at nine sites spaced along the length of the glacier. Maximum measurement depths ranged from 8 m in the lower ablation area to 20 m in the accumulation area. Accuracy of measurement was about 0.1 deg. By the end of summer the temperature at all measured sites and depths was not measurably different from zero, indicating that practically all of the near-surface ice of the glacier is temperate. The distribution of surface velocity along the length of the glacier shows distinct variations with time which cannot be explained by internal deformation in the glacier as influenced by changes in ice depth and slope. This indicates that the glacier is sliding over much of its length, which requires that the base of the glacier is temperate. Taken together, the near-surface temperature and velocity data provide good evidence that Variegated Glacier is temperate throughout and also indicate that the surge behavior of this glacier cannot be explained by thermal triggering. Article in Journal/Newspaper Journal of Glaciology Cambridge University Press Journal of Glaciology 16 74 251 259 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Earth-Surface Processes |
spellingShingle |
Earth-Surface Processes Bindschadler, Robert Harrison, William D. Raymond, Charles F. Gantet, Claude Thermal Regime of a Surge-Type Glacier |
topic_facet |
Earth-Surface Processes |
description |
Abstract Recent measurements of near-surface temperature and surface velocity from the Variegated Glacier are presented. Temperature was measured with thermocouples at nine sites spaced along the length of the glacier. Maximum measurement depths ranged from 8 m in the lower ablation area to 20 m in the accumulation area. Accuracy of measurement was about 0.1 deg. By the end of summer the temperature at all measured sites and depths was not measurably different from zero, indicating that practically all of the near-surface ice of the glacier is temperate. The distribution of surface velocity along the length of the glacier shows distinct variations with time which cannot be explained by internal deformation in the glacier as influenced by changes in ice depth and slope. This indicates that the glacier is sliding over much of its length, which requires that the base of the glacier is temperate. Taken together, the near-surface temperature and velocity data provide good evidence that Variegated Glacier is temperate throughout and also indicate that the surge behavior of this glacier cannot be explained by thermal triggering. |
format |
Article in Journal/Newspaper |
author |
Bindschadler, Robert Harrison, William D. Raymond, Charles F. Gantet, Claude |
author_facet |
Bindschadler, Robert Harrison, William D. Raymond, Charles F. Gantet, Claude |
author_sort |
Bindschadler, Robert |
title |
Thermal Regime of a Surge-Type Glacier |
title_short |
Thermal Regime of a Surge-Type Glacier |
title_full |
Thermal Regime of a Surge-Type Glacier |
title_fullStr |
Thermal Regime of a Surge-Type Glacier |
title_full_unstemmed |
Thermal Regime of a Surge-Type Glacier |
title_sort |
thermal regime of a surge-type glacier |
publisher |
Cambridge University Press (CUP) |
publishDate |
1976 |
url |
http://dx.doi.org/10.1017/s0022143000031579 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000031579 |
genre |
Journal of Glaciology |
genre_facet |
Journal of Glaciology |
op_source |
Journal of Glaciology volume 16, issue 74, page 251-259 ISSN 0022-1430 1727-5652 |
op_doi |
https://doi.org/10.1017/s0022143000031579 |
container_title |
Journal of Glaciology |
container_volume |
16 |
container_issue |
74 |
container_start_page |
251 |
op_container_end_page |
259 |
_version_ |
1792501834188849152 |