Physical and chemical characteristics of the active layer and permafrost, Herschel Island, western Arctic Coast, Canada
Physical and geochemical characteristics of near‐surface permafrost and the impact of permafrost degradation on soil and water chemistry were investigated at five sites on Herschel Island, Yukon Territory. The distribution of soluble cations, moisture and organic matter content in turbic cryosols fr...
Published in: | Permafrost and Periglacial Processes |
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Online Access: | https://doi.org/10.1002/ppp.417 |
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ftrepec:oai:RePEc:wly:perpro:v:13:y:2002:i:2:p:171-185 2023-05-15T15:07:44+02:00 Physical and chemical characteristics of the active layer and permafrost, Herschel Island, western Arctic Coast, Canada S. V. Kokelj C. A. S. Smith C. R. Burn https://doi.org/10.1002/ppp.417 unknown https://doi.org/10.1002/ppp.417 article ftrepec https://doi.org/10.1002/ppp.417 2020-12-04T13:31:03Z Physical and geochemical characteristics of near‐surface permafrost and the impact of permafrost degradation on soil and water chemistry were investigated at five sites on Herschel Island, Yukon Territory. The distribution of soluble cations, moisture and organic matter content in turbic cryosols from undisturbed terrain indicated a thaw unconformity 50 to 80 cm below the base of the present active layer. Palaeoactive‐layer depth, estimated at between 90 and 100 cm, is less than at comparable sites in the Mackenzie Delta area. The difference may be due to the comparative proximity of Herschel Island to the Beaufort Sea coastline in the early Holocene. Soluble cations in permafrost and the active layer of static cryosols at recently disturbed sites were two orders of magnitude higher than in the active layer at undisturbed sites. Na+ was the dominant cation in undisturbed permafrost, recently disturbed ground, and surface runoff derived from disturbed areas. Although degradation of permafrost following terrain disturbance has resulted in surface salinization, a condition detrimental to vegetation growth, leaching of soluble salts from disturbed areas has occurred over time. These processes have produced a range of soil conditions that contribute to the floristic diversity of Herschel Island. Copyright © 2002 John Wiley & Sons, Ltd. Article in Journal/Newspaper Arctic Beaufort Sea Herschel Herschel Island Mackenzie Delta permafrost Yukon RePEc (Research Papers in Economics) Arctic Canada Herschel Island ENVELOPE(-139.089,-139.089,69.583,69.583) Mackenzie Delta ENVELOPE(-136.672,-136.672,68.833,68.833) Yukon Permafrost and Periglacial Processes 13 2 171 185 |
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Open Polar |
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RePEc (Research Papers in Economics) |
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ftrepec |
language |
unknown |
description |
Physical and geochemical characteristics of near‐surface permafrost and the impact of permafrost degradation on soil and water chemistry were investigated at five sites on Herschel Island, Yukon Territory. The distribution of soluble cations, moisture and organic matter content in turbic cryosols from undisturbed terrain indicated a thaw unconformity 50 to 80 cm below the base of the present active layer. Palaeoactive‐layer depth, estimated at between 90 and 100 cm, is less than at comparable sites in the Mackenzie Delta area. The difference may be due to the comparative proximity of Herschel Island to the Beaufort Sea coastline in the early Holocene. Soluble cations in permafrost and the active layer of static cryosols at recently disturbed sites were two orders of magnitude higher than in the active layer at undisturbed sites. Na+ was the dominant cation in undisturbed permafrost, recently disturbed ground, and surface runoff derived from disturbed areas. Although degradation of permafrost following terrain disturbance has resulted in surface salinization, a condition detrimental to vegetation growth, leaching of soluble salts from disturbed areas has occurred over time. These processes have produced a range of soil conditions that contribute to the floristic diversity of Herschel Island. Copyright © 2002 John Wiley & Sons, Ltd. |
format |
Article in Journal/Newspaper |
author |
S. V. Kokelj C. A. S. Smith C. R. Burn |
spellingShingle |
S. V. Kokelj C. A. S. Smith C. R. Burn Physical and chemical characteristics of the active layer and permafrost, Herschel Island, western Arctic Coast, Canada |
author_facet |
S. V. Kokelj C. A. S. Smith C. R. Burn |
author_sort |
S. V. Kokelj |
title |
Physical and chemical characteristics of the active layer and permafrost, Herschel Island, western Arctic Coast, Canada |
title_short |
Physical and chemical characteristics of the active layer and permafrost, Herschel Island, western Arctic Coast, Canada |
title_full |
Physical and chemical characteristics of the active layer and permafrost, Herschel Island, western Arctic Coast, Canada |
title_fullStr |
Physical and chemical characteristics of the active layer and permafrost, Herschel Island, western Arctic Coast, Canada |
title_full_unstemmed |
Physical and chemical characteristics of the active layer and permafrost, Herschel Island, western Arctic Coast, Canada |
title_sort |
physical and chemical characteristics of the active layer and permafrost, herschel island, western arctic coast, canada |
url |
https://doi.org/10.1002/ppp.417 |
long_lat |
ENVELOPE(-139.089,-139.089,69.583,69.583) ENVELOPE(-136.672,-136.672,68.833,68.833) |
geographic |
Arctic Canada Herschel Island Mackenzie Delta Yukon |
geographic_facet |
Arctic Canada Herschel Island Mackenzie Delta Yukon |
genre |
Arctic Beaufort Sea Herschel Herschel Island Mackenzie Delta permafrost Yukon |
genre_facet |
Arctic Beaufort Sea Herschel Herschel Island Mackenzie Delta permafrost Yukon |
op_relation |
https://doi.org/10.1002/ppp.417 |
op_doi |
https://doi.org/10.1002/ppp.417 |
container_title |
Permafrost and Periglacial Processes |
container_volume |
13 |
container_issue |
2 |
container_start_page |
171 |
op_container_end_page |
185 |
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1766339167393939456 |