GNET detected an anomalous "spike" in ice loss in Greenland during the 2010 melting season

Publication: ResearchConference abstract for conference – Annual report year: 2011

  • Author: Bevis, Michael G

    School of Earth Sciences, Ohio State University, Columbus, OH, United States

  • Author: Wahr, John M

    Physics, University of Colorado, Boulder, CO, United States

  • Author: Khan, Shfaqat Abbas

    Geodesy, National Space Institute, Technical University of Denmark, Elektrovej, 2800, Kgs. Lyngby, Denmark

  • Author: Madsen, Finn Bo

    Geodesy, National Space Institute, Technical University of Denmark, Elektrovej, 2800, Kgs. Lyngby, Denmark

  • Author: Brown, Abel K

    School of Earth Sciences, Ohio State University, Columbus, OH, United States

  • Author: Willis, Michael J

    Earth and Atmospheric Sciences, Cornell University, Ithaca, NY, United States

  • Author: Kendrick, Eric C

    School of Earth Sciences, Ohio State University, Columbus, OH, United States

  • Author: Knudsen, Per

    Geodesy, National Space Institute, Technical University of Denmark, Elektrovej, 2800, Kgs. Lyngby, Denmark

  • Author: van Dam, Tonie M

    University of Luxembourg, Luxembourg

  • Author: Box, Jason E

    School of Earth Sciences, Ohio State University, Columbus, OH, United States

  • Author: Caccamise, Dana John

    School of Earth Sciences, Ohio State University, Columbus, OH, United States

  • Author: Johns, Bjorn

    UNAVCO, Inc, Boulder, CO, United States

  • Author: Nylen, Thomas

    UNAVCO, Inc, Boulder, CO, United States

  • Author: Abbott, Robin

    Polar Services, CH2M HILL, Boulder, CO, United States

  • Author: White, Seth

    UNAVCO, Inc, Boulder, CO, United States

  • Author: Forsberg, René

    Geodynamics, National Space Institute, Technical University of Denmark, Elektrovej, 2800, Kgs. Lyngby, Denmark

  • Author: Zhou, Hao

    School of Earth Sciences, Ohio State University, Columbus, OH, United States

  • Author: Francis, Olivier

    University of Luxembourg, Luxembourg

  • Author: Wang, Jian

    School of Earth Sciences, Ohio State University, Columbus, OH, United States

  • Author: Wilson, Terry J

    School of Earth Sciences, Ohio State University, Columbus, OH, United States

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The Greenland GPS Network (GNET) uses GPS geodesy to measure the displacement of bedrock exposed near the margins of the Greenland Ice Sheet. The amplitudes of the observed vertical velocities indicate that over most of coastal Greenland these displacements are dominated by the solid earth’s instantaneous elastic response to contemporary losses in ice mass. Superimposed on longer term trends, an anomalous ‘pulse’ of uplift accumulated at many GNET stations during a ~5 month period in 2010, and we will show that this anomalous uplift is spatially correlated with the 2010 melting day anomaly (Tedesco et al., 2011). This result confirms the ability of GPS networks in Greenland, Antarctica and elsewhere to directly sense ice mass changes at sub-annual as well as longer timescales. GNET and similar GPS networks can therefore mitigate the loss of ice mass measurements following the anticipated termination of the GRACE satellite mission. This result also suggests that ice mass varies over a range of time scales, rather like sea level.
Original languageEnglish
Publication date2011
StatePublished

Conference

Conference2011 AGU Fall Meeting
CountryUnited States
CitySan Francisco, CA
Period05/12/1109/12/11
Internet addresshttp://fallmeeting.agu.org/2011/
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