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Climate-induced landsliding within the larch dominant permafrost zone of central Siberia

Kharuk, Viacheslav I., Shushpanov, Alexandr S., Im, Sergei T., and Ranson, Kenneth J., 2016. Climate-induced landsliding within the larch dominant permafrost zone of central Siberia. Environmental Research Letters, 11(4):045004, doi:10.1088/1748-9326/11/4/045004.

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@ARTICLE{2016ERL....11d5004K,
       author = {{Kharuk}, Viacheslav I. and {Shushpanov}, Alexandr S. and {Im}, Sergei T. and {Ranson}, Kenneth J.},
        title = "{Climate-induced landsliding within the larch dominant permafrost zone of central Siberia}",
      journal = {Environmental Research Letters},
         year = 2016,
        month = apr,
       volume = {11},
       number = {4},
          eid = {045004},
        pages = {045004},
     abstract = "{Climate impact on landslide occurrence and spatial patterns were
        analyzed within the larch-dominant communities associated with
        continuous permafrost areas of central Siberia. We used high
        resolution satellite imagery (i.e. QuickBird, WorldView) to
        identify landslide scars over an area of 62 000 km$^{2}$.
        Landslide occurrence was analyzed with respect to climate
        variables (air temperature, precipitation, drought index SPEI),
        and Gravity Recovery and Climate Experiment satellite derived
        equivalent of water thickness anomalies (EWTA). Landslides were
        found only on southward facing slopes, and the occurrence of
        landslides increased exponentially with increasing slope
        steepness. Lengths of landslides correlated positively with
        slope steepness. The observed upper elevation limit of
        landslides tended to coincide with the tree line. Observations
        revealed landslides occurrence was also found to be strongly
        correlated with August precipitation (r = 0.81) and drought
        index (r = 0.7), with June-July-August soil water anomalies
        (i.e., EWTA, r = 0.68-0.7), and number of thawing days (i.e., a
        number of days with t $_{max}$ > 0 {\textdegree}C r = 0.67). A
        significant increase in the variance of soil water anomalies was
        observed, indicating that occurrence of landslides may increase
        even with a stable mean precipitation level. The key-findings of
        this study are (1) landslides occurrence increased within the
        permafrost zone of central Siberia in the beginning of the 21st
        century; (2) the main cause of increased landslides occurrence
        are extremes in precipitation and soil water anomalies; and (3)
        landslides occurrence are strongly dependent on relief features
        such as southward facing steep slopes.}",
          doi = {10.1088/1748-9326/11/4/045004},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2016ERL....11d5004K},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

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