Ice flow of Humboldt, Petermann and Ryder Gletscher, northern Greenland
Abstract Radar interferometry, ice-penetrating radar profiles and an elevation model are used to determine the velocity fields, rates of ice discharge, approximate states of balance and catchment area for three large outlet glaciers in northeast Greenland. Discharge through flux gates is calculated...
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Language: | English |
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Cambridge University Press (CUP)
1999
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Online Access: | http://dx.doi.org/10.1017/s0022143000001738 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000001738 |
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crcambridgeupr:10.1017/s0022143000001738 2024-09-09T19:41:22+00:00 Ice flow of Humboldt, Petermann and Ryder Gletscher, northern Greenland Joughin, Ian Fahnestock, Mark Kwok, Ron Gogineni, Prasad Allen, Chris 1999 http://dx.doi.org/10.1017/s0022143000001738 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000001738 en eng Cambridge University Press (CUP) Journal of Glaciology volume 45, issue 150, page 231-241 ISSN 0022-1430 1727-5652 journal-article 1999 crcambridgeupr https://doi.org/10.1017/s0022143000001738 2024-06-19T04:04:07Z Abstract Radar interferometry, ice-penetrating radar profiles and an elevation model are used to determine the velocity fields, rates of ice discharge, approximate states of balance and catchment area for three large outlet glaciers in northeast Greenland. Discharge through flux gates is calculated for Humboldt and Petermann Gletscher, which are found to be in balance (at the level that the accumulation is known). A large difference between the measured and estimated fluxes for Ryder Gletscher may be a reflection of unsteady flow behavior for this glacier. The patterns of ice flow for the three glaciers considered are each unique, showing that the nature of ice discharge varies substantially from basin to basin, controlled by bed conditions and the presence of subglacial troughs and obstructions. Article in Journal/Newspaper glacier Greenland Journal of Glaciology Petermann gletscher Cambridge University Press Greenland Petermann Gletscher ENVELOPE(-59.500,-59.500,80.500,80.500) Ryder ENVELOPE(-68.333,-68.333,-67.566,-67.566) Ryder Gletscher ENVELOPE(-49.167,-49.167,81.633,81.633) Journal of Glaciology 45 150 231 241 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
description |
Abstract Radar interferometry, ice-penetrating radar profiles and an elevation model are used to determine the velocity fields, rates of ice discharge, approximate states of balance and catchment area for three large outlet glaciers in northeast Greenland. Discharge through flux gates is calculated for Humboldt and Petermann Gletscher, which are found to be in balance (at the level that the accumulation is known). A large difference between the measured and estimated fluxes for Ryder Gletscher may be a reflection of unsteady flow behavior for this glacier. The patterns of ice flow for the three glaciers considered are each unique, showing that the nature of ice discharge varies substantially from basin to basin, controlled by bed conditions and the presence of subglacial troughs and obstructions. |
format |
Article in Journal/Newspaper |
author |
Joughin, Ian Fahnestock, Mark Kwok, Ron Gogineni, Prasad Allen, Chris |
spellingShingle |
Joughin, Ian Fahnestock, Mark Kwok, Ron Gogineni, Prasad Allen, Chris Ice flow of Humboldt, Petermann and Ryder Gletscher, northern Greenland |
author_facet |
Joughin, Ian Fahnestock, Mark Kwok, Ron Gogineni, Prasad Allen, Chris |
author_sort |
Joughin, Ian |
title |
Ice flow of Humboldt, Petermann and Ryder Gletscher, northern Greenland |
title_short |
Ice flow of Humboldt, Petermann and Ryder Gletscher, northern Greenland |
title_full |
Ice flow of Humboldt, Petermann and Ryder Gletscher, northern Greenland |
title_fullStr |
Ice flow of Humboldt, Petermann and Ryder Gletscher, northern Greenland |
title_full_unstemmed |
Ice flow of Humboldt, Petermann and Ryder Gletscher, northern Greenland |
title_sort |
ice flow of humboldt, petermann and ryder gletscher, northern greenland |
publisher |
Cambridge University Press (CUP) |
publishDate |
1999 |
url |
http://dx.doi.org/10.1017/s0022143000001738 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000001738 |
long_lat |
ENVELOPE(-59.500,-59.500,80.500,80.500) ENVELOPE(-68.333,-68.333,-67.566,-67.566) ENVELOPE(-49.167,-49.167,81.633,81.633) |
geographic |
Greenland Petermann Gletscher Ryder Ryder Gletscher |
geographic_facet |
Greenland Petermann Gletscher Ryder Ryder Gletscher |
genre |
glacier Greenland Journal of Glaciology Petermann gletscher |
genre_facet |
glacier Greenland Journal of Glaciology Petermann gletscher |
op_source |
Journal of Glaciology volume 45, issue 150, page 231-241 ISSN 0022-1430 1727-5652 |
op_doi |
https://doi.org/10.1017/s0022143000001738 |
container_title |
Journal of Glaciology |
container_volume |
45 |
container_issue |
150 |
container_start_page |
231 |
op_container_end_page |
241 |
_version_ |
1809910780326313984 |