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Thermokarst pond dynamics in subarctic environment monitoring with radar remote sensing

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  • Lingxiao Wang
  • Maxime Jolivel
  • Philip Marzahn
  • Monique Bernier
  • Ralf Ludwig

Abstract

Permafrost degradation can be monitored through changes in the surface area and depth of thermokarst ponds. Radar remote sensing allows for discrimination of thermokarst ponds of different depths across large areas because different water depths produce different ice regimes in winter. In this study, patterns in the spatial distribution of ice‐cover regimes of thermokarst ponds in a typical discontinuous permafrost region are first revealed. Correlations of these ice‐cover regimes with the permafrost degradation states and thermokarst pond development in two historical phases were analyzed and compared. The results indicate that the ice‐cover regimes of thermokarst ponds are affected by soil texture, permafrost degradation stage and permafrost depth. Permafrost degradation is difficult to assess directly from the coverage area of floating‐ice ponds and the percentage of all thermokarst ponds consisting of such floating‐ice ponds in a single year. Therefore, continuous monitoring of ice‐cover regimes and surface areas can help to elucidate the hydrological trajectory of the thermokarst process and permafrost state.

Suggested Citation

  • Lingxiao Wang & Maxime Jolivel & Philip Marzahn & Monique Bernier & Ralf Ludwig, 2018. "Thermokarst pond dynamics in subarctic environment monitoring with radar remote sensing," Permafrost and Periglacial Processes, John Wiley & Sons, vol. 29(4), pages 231-245, October.
    • Handle: RePEc:wly:perpro:v:29:y:2018:i:4:p:231-245
    DOI: 10.1002/ppp.1986
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    Cited by:

    1. Raul‐David Șerban & Huijun Jin & Mihaela Șerban & Dongliang Luo, 2021. "Shrinking thermokarst lakes and ponds on the northeastern Qinghai‐Tibet plateau over the past three decades," Permafrost and Periglacial Processes, John Wiley & Sons, vol. 32(4), pages 601-617, October.
    2. Léa Bussière & Myriam Schmutz & Richard Fortier & Jean‐Michel Lemieux & Alain Dupuy, 2022. "Near‐surface geophysical imaging of a thermokarst pond in the discontinuous permafrost zone in Nunavik (Québec), Canada," Permafrost and Periglacial Processes, John Wiley & Sons, vol. 33(4), pages 353-369, October.

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