Summer Heat and Ice Balances on Hodges Glacier, South Georgia, Falkland Islands Dependencies

Abstract The heat and ice balances of a temperate sub-Antarctic cirque glacier were measured through the 1973–74 melt season at an altitude midway between the climatic firn limit and the snout. The melt calculated from mean daily measurements at a single level of net radiation, wind-speed, temperatu...

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Published in:Journal of Glaciology
Main Authors: Hogg, I. G. G., Paren, J. G., Timmis, R. J.
Format: Article in Journal/Newspaper
Language:English
Published: Cambridge University Press (CUP) 1982
Subjects:
Online Access:http://dx.doi.org/10.1017/s0022143000011606
https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000011606
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spelling crcambridgeupr:10.1017/s0022143000011606 2024-03-03T08:37:11+00:00 Summer Heat and Ice Balances on Hodges Glacier, South Georgia, Falkland Islands Dependencies Hogg, I. G. G. Paren, J. G. Timmis, R. J. 1982 http://dx.doi.org/10.1017/s0022143000011606 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000011606 en eng Cambridge University Press (CUP) Journal of Glaciology volume 28, issue 99, page 221-238 ISSN 0022-1430 1727-5652 Earth-Surface Processes journal-article 1982 crcambridgeupr https://doi.org/10.1017/s0022143000011606 2024-02-08T08:34:04Z Abstract The heat and ice balances of a temperate sub-Antarctic cirque glacier were measured through the 1973–74 melt season at an altitude midway between the climatic firn limit and the snout. The melt calculated from mean daily measurements at a single level of net radiation, wind-speed, temperature, and humidity agreed with that observed at nearby budget stakes. In the central ablation zone, radiation provided (54 ± 6)% and sensible fluxes (46 ± 6)% of the heat income through the summer, which was exceptionally warm and sunny. Latent-heat fluxes made no significant contribution to the heat balance. The calculation by Smith (1960) that the radiative, sensible, and latent heat fluxes contribute about equally to ablation in this zone has not been substantiated by measurement. The measured partition of the glacier’s heat balance suggested that maritime influences on its regime are mitigated by its position in the lee of a major mountain range. Article in Journal/Newspaper Antarc* Antarctic Hodges Glacier Journal of Glaciology Cambridge University Press Antarctic Hodges Glacier ENVELOPE(-36.533,-36.533,-54.267,-54.267) Journal of Glaciology 28 99 221 238
institution Open Polar
collection Cambridge University Press
op_collection_id crcambridgeupr
language English
topic Earth-Surface Processes
spellingShingle Earth-Surface Processes
Hogg, I. G. G.
Paren, J. G.
Timmis, R. J.
Summer Heat and Ice Balances on Hodges Glacier, South Georgia, Falkland Islands Dependencies
topic_facet Earth-Surface Processes
description Abstract The heat and ice balances of a temperate sub-Antarctic cirque glacier were measured through the 1973–74 melt season at an altitude midway between the climatic firn limit and the snout. The melt calculated from mean daily measurements at a single level of net radiation, wind-speed, temperature, and humidity agreed with that observed at nearby budget stakes. In the central ablation zone, radiation provided (54 ± 6)% and sensible fluxes (46 ± 6)% of the heat income through the summer, which was exceptionally warm and sunny. Latent-heat fluxes made no significant contribution to the heat balance. The calculation by Smith (1960) that the radiative, sensible, and latent heat fluxes contribute about equally to ablation in this zone has not been substantiated by measurement. The measured partition of the glacier’s heat balance suggested that maritime influences on its regime are mitigated by its position in the lee of a major mountain range.
format Article in Journal/Newspaper
author Hogg, I. G. G.
Paren, J. G.
Timmis, R. J.
author_facet Hogg, I. G. G.
Paren, J. G.
Timmis, R. J.
author_sort Hogg, I. G. G.
title Summer Heat and Ice Balances on Hodges Glacier, South Georgia, Falkland Islands Dependencies
title_short Summer Heat and Ice Balances on Hodges Glacier, South Georgia, Falkland Islands Dependencies
title_full Summer Heat and Ice Balances on Hodges Glacier, South Georgia, Falkland Islands Dependencies
title_fullStr Summer Heat and Ice Balances on Hodges Glacier, South Georgia, Falkland Islands Dependencies
title_full_unstemmed Summer Heat and Ice Balances on Hodges Glacier, South Georgia, Falkland Islands Dependencies
title_sort summer heat and ice balances on hodges glacier, south georgia, falkland islands dependencies
publisher Cambridge University Press (CUP)
publishDate 1982
url http://dx.doi.org/10.1017/s0022143000011606
https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000011606
long_lat ENVELOPE(-36.533,-36.533,-54.267,-54.267)
geographic Antarctic
Hodges Glacier
geographic_facet Antarctic
Hodges Glacier
genre Antarc*
Antarctic
Hodges Glacier
Journal of Glaciology
genre_facet Antarc*
Antarctic
Hodges Glacier
Journal of Glaciology
op_source Journal of Glaciology
volume 28, issue 99, page 221-238
ISSN 0022-1430 1727-5652
op_doi https://doi.org/10.1017/s0022143000011606
container_title Journal of Glaciology
container_volume 28
container_issue 99
container_start_page 221
op_container_end_page 238
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