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Modern and Late Holocene Retrogressive Thaw Slump Activity on the Yukon Coastal Plain and Herschel Island, Yukon Territory, Canada

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  • H. Lantuit
  • W. H. Pollard
  • N. Couture
  • M. Fritz
  • L. Schirrmeister
  • H. Meyer
  • H.‐W. Hubberten

Abstract

Four retrogressive thaw slumps (RTS) located on Herschel Island and the Yukon coast (King Point) in the western Canadian Arctic were investigated to compare the environmental, sedimentological and geochemical setting and characteristics of zones in active and stabilised slumps and at undisturbed sites. In general, the slope, sedimentology and biogeochemistry of stabilised and undisturbed zones differ, independent of their age or location. Organic carbon contents were lower in slumps than in the surrounding tundra, and the density and compaction of slump sediments were much greater. Radiocarbon dating showed that RTS were likely to have been active around 300 a BP and are undergoing a similar period of increased activity now. This cycle is thought to be controlled more by local geometry, cryostratigraphy and the rate of coastal erosion than by variation in summer temperatures. Copyright © 2012 John Wiley & Sons, Ltd.

Suggested Citation

  • H. Lantuit & W. H. Pollard & N. Couture & M. Fritz & L. Schirrmeister & H. Meyer & H.‐W. Hubberten, 2012. "Modern and Late Holocene Retrogressive Thaw Slump Activity on the Yukon Coastal Plain and Herschel Island, Yukon Territory, Canada," Permafrost and Periglacial Processes, John Wiley & Sons, vol. 23(1), pages 39-51, January.
    • Handle: RePEc:wly:perpro:v:23:y:2012:i:1:p:39-51
    DOI: 10.1002/ppp.1731
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    Cited by:

    1. David K. Swanson, 2021. "Permafrost thaw‐related slope failures in Alaska’s Arctic National Parks, c. 1980–2019," Permafrost and Periglacial Processes, John Wiley & Sons, vol. 32(3), pages 392-406, July.
    2. Pengfei Li & Tianchun Dong & Yanhe Wang & Jing Luo & Huini Wang & Huarui Zhang, 2024. "Susceptibility Mapping of Thaw Slumps Based on Neural Network Methods along the Qinghai–Tibet Engineering Corridor," Sustainability, MDPI, vol. 16(12), pages 1-20, June.

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