Fig. 1: Hypsometry of major Alaskan icefields. | Nature Communications

Fig. 1: Hypsometry of major Alaskan icefields.

From: Accelerating glacier volume loss on Juneau Icefield driven by hypsometry and melt-accelerating feedbacks

Fig. 1

Top: hypsometric index of individual glaciers in the RGI (Randolph Glacier Inventory) v6.067. Hypsometric index defined after ref. 63. Visualised on background of void-filled 3” Viewfinder Panorama DEMs (Digital Elevation Models), comprising SRTM DEM (Shuttle Radar Topography Mission Digital Elevation Model) south of 60°20'N. Below: area-elevation histograms for major ice bodies in Alaska. Measured Equilibrium Line Altitudes (ELAs)25,33,35,94,95 shown with red dashed line. Juneau, Kluane, Brady, Sargent and Bagley icefields all have a significant low-slope plateau in their accumulation areas. Juneau, Stikine, Harding, Sargent and parts of Kluane Icefield are all very top-heavy icefields. Bottom right: normalised cumulative area-elevation plots for each icefield. The top-heavy Juneau, Stikine, Harding and Sargeant icefields alone make up 2589 km3 of ice.

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