Mass Balance of Four Cirque Glaciers in the Torngat Mountains of Northern Labrador, Canada
Abstract The net mass balance of four small cirque glaciers (0.7–1.4 km 2 ) in the Torngat Mountains of northern Labrador was measured for 1981–84, allowing three complete mass-balance years to be calculated. The two largest glaciers experienced positive mass-balance conditions in 1982 while all the...
Published in: | Journal of Glaciology |
---|---|
Main Author: | |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Cambridge University Press (CUP)
1986
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1017/s0022143000015525 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000015525 |
id |
crcambridgeupr:10.1017/s0022143000015525 |
---|---|
record_format |
openpolar |
spelling |
crcambridgeupr:10.1017/s0022143000015525 2024-03-03T08:44:41+00:00 Mass Balance of Four Cirque Glaciers in the Torngat Mountains of Northern Labrador, Canada Rogerson, Robert J. 1986 http://dx.doi.org/10.1017/s0022143000015525 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000015525 en eng Cambridge University Press (CUP) Journal of Glaciology volume 32, issue 111, page 208-218 ISSN 0022-1430 1727-5652 Earth-Surface Processes journal-article 1986 crcambridgeupr https://doi.org/10.1017/s0022143000015525 2024-02-08T08:36:10Z Abstract The net mass balance of four small cirque glaciers (0.7–1.4 km 2 ) in the Torngat Mountains of northern Labrador was measured for 1981–84, allowing three complete mass-balance years to be calculated. The two largest glaciers experienced positive mass-balance conditions in 1982 while all the glaciers were negative in 1983. The temporal pattern relates directly to general climatic conditions, in particular winter snowfall. Spatial variations of mass balance on the glaciers are the result of several factors including altitude, extent of supraglacial debris cover, slope, proximity to side and backwalls of the enclosing cirque, and the height of the backwall above the ice surface. Abraham Glacier, the smallest studied and with consistently the largest negative mass balance (–1.28 m in 1983), re-advanced an average of 1.2 m each year between 1981 and 1984. Mean equilibrium-line altitude (ELA) for the four glaciers is 1050 m, varying substantially from one glacier to another (+240 to –140 m) and from year to year (+60 to –30 m). Article in Journal/Newspaper glacier* Journal of Glaciology Cambridge University Press Canada Ela ENVELOPE(9.642,9.642,63.170,63.170) Torngat Mountains ENVELOPE(-63.665,-63.665,59.000,59.000) Journal of Glaciology 32 111 208 218 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Earth-Surface Processes |
spellingShingle |
Earth-Surface Processes Rogerson, Robert J. Mass Balance of Four Cirque Glaciers in the Torngat Mountains of Northern Labrador, Canada |
topic_facet |
Earth-Surface Processes |
description |
Abstract The net mass balance of four small cirque glaciers (0.7–1.4 km 2 ) in the Torngat Mountains of northern Labrador was measured for 1981–84, allowing three complete mass-balance years to be calculated. The two largest glaciers experienced positive mass-balance conditions in 1982 while all the glaciers were negative in 1983. The temporal pattern relates directly to general climatic conditions, in particular winter snowfall. Spatial variations of mass balance on the glaciers are the result of several factors including altitude, extent of supraglacial debris cover, slope, proximity to side and backwalls of the enclosing cirque, and the height of the backwall above the ice surface. Abraham Glacier, the smallest studied and with consistently the largest negative mass balance (–1.28 m in 1983), re-advanced an average of 1.2 m each year between 1981 and 1984. Mean equilibrium-line altitude (ELA) for the four glaciers is 1050 m, varying substantially from one glacier to another (+240 to –140 m) and from year to year (+60 to –30 m). |
format |
Article in Journal/Newspaper |
author |
Rogerson, Robert J. |
author_facet |
Rogerson, Robert J. |
author_sort |
Rogerson, Robert J. |
title |
Mass Balance of Four Cirque Glaciers in the Torngat Mountains of Northern Labrador, Canada |
title_short |
Mass Balance of Four Cirque Glaciers in the Torngat Mountains of Northern Labrador, Canada |
title_full |
Mass Balance of Four Cirque Glaciers in the Torngat Mountains of Northern Labrador, Canada |
title_fullStr |
Mass Balance of Four Cirque Glaciers in the Torngat Mountains of Northern Labrador, Canada |
title_full_unstemmed |
Mass Balance of Four Cirque Glaciers in the Torngat Mountains of Northern Labrador, Canada |
title_sort |
mass balance of four cirque glaciers in the torngat mountains of northern labrador, canada |
publisher |
Cambridge University Press (CUP) |
publishDate |
1986 |
url |
http://dx.doi.org/10.1017/s0022143000015525 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000015525 |
long_lat |
ENVELOPE(9.642,9.642,63.170,63.170) ENVELOPE(-63.665,-63.665,59.000,59.000) |
geographic |
Canada Ela Torngat Mountains |
geographic_facet |
Canada Ela Torngat Mountains |
genre |
glacier* Journal of Glaciology |
genre_facet |
glacier* Journal of Glaciology |
op_source |
Journal of Glaciology volume 32, issue 111, page 208-218 ISSN 0022-1430 1727-5652 |
op_doi |
https://doi.org/10.1017/s0022143000015525 |
container_title |
Journal of Glaciology |
container_volume |
32 |
container_issue |
111 |
container_start_page |
208 |
op_container_end_page |
218 |
_version_ |
1792500163168698368 |