Errors in Short-Term Ablation Measurements on Melting Ice Surfaces
Rapid changes in time and space in the micro-relief of an ablating glacier surface and radiation-induced melt within the uppermost ice layer, termed the “weathering crust”, seriously affect the accuracy of the short-term ablation measurements. The various measuring techniques commonly used (stakes,...
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Language: | English |
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Cambridge University Press (CUP)
1969
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Online Access: | http://dx.doi.org/10.1017/s0022143000020785 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000020785 |
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crcambridgeupr:10.1017/s0022143000020785 2024-09-15T18:15:38+00:00 Errors in Short-Term Ablation Measurements on Melting Ice Surfaces Müller, Fritz Keeler, Charles M. 1969 http://dx.doi.org/10.1017/s0022143000020785 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000020785 en eng Cambridge University Press (CUP) Journal of Glaciology volume 8, issue 52, page 91-105 ISSN 0022-1430 1727-5652 journal-article 1969 crcambridgeupr https://doi.org/10.1017/s0022143000020785 2024-07-24T04:01:31Z Rapid changes in time and space in the micro-relief of an ablating glacier surface and radiation-induced melt within the uppermost ice layer, termed the “weathering crust”, seriously affect the accuracy of the short-term ablation measurements. The various measuring techniques commonly used (stakes, ablatometers, ablatographs) and some new methods (measurement of discharge from a small supra-glacial drainage basin, and mass loss directly measured on core samples) are critically reviewed and assessed in the light of these phenomena. The implications for studies of heat and mass balance are discussed. It appears that the direct measurement of mass flux is the most accurate means of assessing short-terni ablation rates. The errors in short-term ablation measurements by any method are largely compensatory and consequently do not influence long-period mass-balance estimates. Article in Journal/Newspaper Journal of Glaciology Cambridge University Press Journal of Glaciology 8 52 91 105 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
description |
Rapid changes in time and space in the micro-relief of an ablating glacier surface and radiation-induced melt within the uppermost ice layer, termed the “weathering crust”, seriously affect the accuracy of the short-term ablation measurements. The various measuring techniques commonly used (stakes, ablatometers, ablatographs) and some new methods (measurement of discharge from a small supra-glacial drainage basin, and mass loss directly measured on core samples) are critically reviewed and assessed in the light of these phenomena. The implications for studies of heat and mass balance are discussed. It appears that the direct measurement of mass flux is the most accurate means of assessing short-terni ablation rates. The errors in short-term ablation measurements by any method are largely compensatory and consequently do not influence long-period mass-balance estimates. |
format |
Article in Journal/Newspaper |
author |
Müller, Fritz Keeler, Charles M. |
spellingShingle |
Müller, Fritz Keeler, Charles M. Errors in Short-Term Ablation Measurements on Melting Ice Surfaces |
author_facet |
Müller, Fritz Keeler, Charles M. |
author_sort |
Müller, Fritz |
title |
Errors in Short-Term Ablation Measurements on Melting Ice Surfaces |
title_short |
Errors in Short-Term Ablation Measurements on Melting Ice Surfaces |
title_full |
Errors in Short-Term Ablation Measurements on Melting Ice Surfaces |
title_fullStr |
Errors in Short-Term Ablation Measurements on Melting Ice Surfaces |
title_full_unstemmed |
Errors in Short-Term Ablation Measurements on Melting Ice Surfaces |
title_sort |
errors in short-term ablation measurements on melting ice surfaces |
publisher |
Cambridge University Press (CUP) |
publishDate |
1969 |
url |
http://dx.doi.org/10.1017/s0022143000020785 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000020785 |
genre |
Journal of Glaciology |
genre_facet |
Journal of Glaciology |
op_source |
Journal of Glaciology volume 8, issue 52, page 91-105 ISSN 0022-1430 1727-5652 |
op_doi |
https://doi.org/10.1017/s0022143000020785 |
container_title |
Journal of Glaciology |
container_volume |
8 |
container_issue |
52 |
container_start_page |
91 |
op_container_end_page |
105 |
_version_ |
1810453517509328896 |