1 / 7

Glacier Mass Balance Studies

Editing has been performed to remove artifacts and interpolate over failed regions. DEM used to orthorectify image bands False color VNIR composite draped over DEM for 3-D visualization. Glacier Mass Balance Studies.

zan
Download Presentation

Glacier Mass Balance Studies

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Editing has been performed to remove artifacts and interpolate over failed regions. • DEM used to orthorectify image bands • False color VNIR composite draped over DEM for 3-D visualization Glacier Mass Balance Studies • ASTER data being used to predict response of glacier systems to climate change • Glacier boundary outlines (using GLIMSView) combined w/ ASTER-derived DEM to get hypsography • Hypsography plus measurements from benchmark glacier used to define mass balance as function of ELA for entire glacier system

  2. Mask DEM using ice outlines • Compute histogram of elevations Glacier Mass Balance Studies • ASTER data being used to predict response of glacier systems to climate change • Glacier boundary outlines (using GLIMSView) combined w/ ASTER-derived DEM to get hypsography • Hypsography plus measurements from benchmark glacier used to define mass balance as function of ELA for entire glacier system

  3. Digitizing outlines w/ GLIMSView • Exports data in format specified for ingest into GLIMS database at NSIDC Glacier Mass Balance Studies • ASTER data being used to predict response of glacier systems to climate change • Glacier boundary outlines (using GLIMSView) combined w/ ASTER-derived DEM to get hypsography • Hypsography plus measurements from benchmark glacier used to define mass balance as function of ELA for entire glacier system

  4. Hypsography compared to previous field survey (Kuzmichenok, 1977) Glacier Mass Balance Studies • ASTER data being used to predict response of glacier systems to climate change • Glacier boundary outlines (using GLIMSView) combined w/ ASTER-derived DEM to get hypsography • Hypsography plus measurements from benchmark glacier used to define mass balance as function of ELA for entire glacier system

  5. The “Template” Method • Field measurements of benchmark glacier used to find annual mass balance as function of accumulation area ratio (AAR) • This relationship is assumed to apply to all glaciers in a region sharing similar climate, terrain, etc. • Integral of area vs. elevation curve gives AAR as function of equilibrium line altitude (ELA) • Thus, we can get mass balance as function of ELA for any glacier, using its hypsography

More Related