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Implications of climate variability and changing seasonal hydrology for subarctic riverbank erosion

Author

Listed:
  • Dana R. N. Brown

    (University of Alaska Fairbanks)

  • Todd J. Brinkman

    (University of Alaska Fairbanks)

  • W. Robert Bolton

    (University of Alaska Fairbanks)

  • Caroline L. Brown

    (Alaska Department of Fish and Game)

  • Helen S. Cold

    (Alaska Department of Fish and Game)

  • Teresa N. Hollingsworth

    (University of Alaska Fairbanks)

  • David L. Verbyla

    (University of Alaska Fairbanks)

Abstract

Warmer climatic conditions have been associated with numerous hydrologic changes that may impact riverbank erosion in cold regions, but the net effect is not well understood. We used regression and correlation analyses to examine the relationships among subarctic riverbank erosion and seasonal hydrology, the impact of climate change and variability, and the societal implications. Geomorphic change (loss and gain of vegetated land) was mapped along several river reaches in the Yukon River Basin, Alaska, throughout 1984 and 2017 using Landsat satellite imagery. Annual erosion rates were estimated from these spatial data. At most study sites, erosion rates (km2/year) were either positively correlated (r = 0.68–0.84, p = 0.0085–0.061) with monthly mean discharge within the cold season or inversely correlated (r = − 0.74 – −0.62, p

Suggested Citation

  • Dana R. N. Brown & Todd J. Brinkman & W. Robert Bolton & Caroline L. Brown & Helen S. Cold & Teresa N. Hollingsworth & David L. Verbyla, 2020. "Implications of climate variability and changing seasonal hydrology for subarctic riverbank erosion," Climatic Change, Springer, vol. 162(2), pages 1-20, September.
    • Handle: RePEc:spr:climat:v:162:y:2020:i:2:d:10.1007_s10584-020-02748-9
    DOI: 10.1007/s10584-020-02748-9
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    References listed on IDEAS

    as
    1. Xiangdong Zhang & Juanxiong He & Jing Zhang & Igor Polyakov & Rüdiger Gerdes & Jun Inoue & Peili Wu, 2013. "Enhanced poleward moisture transport and amplified northern high-latitude wetting trend," Nature Climate Change, Nature, vol. 3(1), pages 47-51, January.
    2. Todd J. Brinkman & Winslow D. Hansen & F. Stuart Chapin & Gary Kofinas & Shauna BurnSilver & T. Scott Rupp, 2016. "Arctic communities perceive climate impacts on access as a critical challenge to availability of subsistence resources," Climatic Change, Springer, vol. 139(3), pages 413-427, December.
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