A rapidly retreating, marine-terminating glacier's modeled response to perturbations in basal traction

Jacob Downs, Jesse V. Johnson

    Research output: Contribution to journalArticlepeer-review

    Abstract

    Upernavik Isstrom, a marine glacier undergoing rapid retreat, is simulated by forcing a numerical model with ocean-driven melt. A review of processes driving retreat led us to hypothesize that a glacier undergoing rapid retreat may be less sensitive to perturbations in the balance of forces than a glacier that is undergoing moderate changes or a glacier in steady state. Numerical experiments suggest this is not the case, and that a system in rapid retreat is as sensitive to basal traction perturbations as a system that is near to steady state. This result is important when considering other glacier systems experiencing marine-forced retreat. While the ice-ocean interface is of primary importance, additional perturbations from meltwater-forced decoupling of the glacier from its bed continue to feature in glacier dynamics.

    Original languageEnglish
    Pages (from-to)891-900
    Number of pages10
    JournalJournal of Glaciology
    Volume68
    Issue number271
    DOIs
    StatePublished - Oct 8 2022

    Keywords

    • Calving
    • glacier flow
    • glacier modeling
    • ice-sheet modeling

    Fingerprint

    Dive into the research topics of 'A rapidly retreating, marine-terminating glacier's modeled response to perturbations in basal traction'. Together they form a unique fingerprint.

    Cite this