Hydrostatic‐system palsas at Toolik lake, Alaska: Field observations and simulation
Abstract Stratigraphic and chemical data from the ice core of an ‘anthropogenic palsa’ at Toolik Lake, Alaska, indicate that the mound formed as a consequence of hydrostatic pressure developed in an isolated hydrologic system within the active layer. Survey data for five palsas over a three‐year per...
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crwiley:10.1002/esp.3290110109 2024-06-02T08:08:08+00:00 Hydrostatic‐system palsas at Toolik lake, Alaska: Field observations and simulation Outcalt, S. I. Nelson, F. E. Hinkel, K. M. Martin, G. D. 1986 http://dx.doi.org/10.1002/esp.3290110109 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fesp.3290110109 https://onlinelibrary.wiley.com/doi/pdf/10.1002/esp.3290110109 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Earth Surface Processes and Landforms volume 11, issue 1, page 79-94 ISSN 0197-9337 1096-9837 journal-article 1986 crwiley https://doi.org/10.1002/esp.3290110109 2024-05-03T11:59:42Z Abstract Stratigraphic and chemical data from the ice core of an ‘anthropogenic palsa’ at Toolik Lake, Alaska, indicate that the mound formed as a consequence of hydrostatic pressure developed in an isolated hydrologic system within the active layer. Survey data for five palsas over a three‐year period suggest that growth was essentially complete at the time of the initial survey; a net decrease of summit elevation is apparent in all five mounds, but complete degradation of the palsas would require several decades at observed rates. Because accurate field measurements of thermal and hydrologic evolution in such features are extremely difficult, simulation of the environmental conditions and events involved in palsa growth is an important supplement to field observation. Both analytic and finite‐element models yield results that are in substantial agreement with inferences drawn from observational data. Article in Journal/Newspaper ice core palsa palsas Alaska Wiley Online Library Earth Surface Processes and Landforms 11 1 79 94 |
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Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract Stratigraphic and chemical data from the ice core of an ‘anthropogenic palsa’ at Toolik Lake, Alaska, indicate that the mound formed as a consequence of hydrostatic pressure developed in an isolated hydrologic system within the active layer. Survey data for five palsas over a three‐year period suggest that growth was essentially complete at the time of the initial survey; a net decrease of summit elevation is apparent in all five mounds, but complete degradation of the palsas would require several decades at observed rates. Because accurate field measurements of thermal and hydrologic evolution in such features are extremely difficult, simulation of the environmental conditions and events involved in palsa growth is an important supplement to field observation. Both analytic and finite‐element models yield results that are in substantial agreement with inferences drawn from observational data. |
format |
Article in Journal/Newspaper |
author |
Outcalt, S. I. Nelson, F. E. Hinkel, K. M. Martin, G. D. |
spellingShingle |
Outcalt, S. I. Nelson, F. E. Hinkel, K. M. Martin, G. D. Hydrostatic‐system palsas at Toolik lake, Alaska: Field observations and simulation |
author_facet |
Outcalt, S. I. Nelson, F. E. Hinkel, K. M. Martin, G. D. |
author_sort |
Outcalt, S. I. |
title |
Hydrostatic‐system palsas at Toolik lake, Alaska: Field observations and simulation |
title_short |
Hydrostatic‐system palsas at Toolik lake, Alaska: Field observations and simulation |
title_full |
Hydrostatic‐system palsas at Toolik lake, Alaska: Field observations and simulation |
title_fullStr |
Hydrostatic‐system palsas at Toolik lake, Alaska: Field observations and simulation |
title_full_unstemmed |
Hydrostatic‐system palsas at Toolik lake, Alaska: Field observations and simulation |
title_sort |
hydrostatic‐system palsas at toolik lake, alaska: field observations and simulation |
publisher |
Wiley |
publishDate |
1986 |
url |
http://dx.doi.org/10.1002/esp.3290110109 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fesp.3290110109 https://onlinelibrary.wiley.com/doi/pdf/10.1002/esp.3290110109 |
genre |
ice core palsa palsas Alaska |
genre_facet |
ice core palsa palsas Alaska |
op_source |
Earth Surface Processes and Landforms volume 11, issue 1, page 79-94 ISSN 0197-9337 1096-9837 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/esp.3290110109 |
container_title |
Earth Surface Processes and Landforms |
container_volume |
11 |
container_issue |
1 |
container_start_page |
79 |
op_container_end_page |
94 |
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1800753306880966656 |