Science Source Feb 2010
EN_90286391_0358
Malaspina Glacier in southeastern Alaska is considered the classic example of a piedmont glacier. Piedmont glaciers occur where valley glaciers exit a mountain range onto broad lowlands and spread to become wide lobes. Malaspina Glacier is actually a compound glacier, formed by the merger of several valley glaciers. In total, Malaspina Glacier is up to 40 miles wide and extends up to 28 miles from the mountain front nearly to the sea. This perspective view was created from a Landsat satellite image and an elevation model generated by the Shuttle Radar Topography Mission (SRTM). The SRTM mission, launched aboard the Space Shuttle Endeavour on February 11, 2000, was designed to collect three-dimensional measurements of the Earth's surface. Landsat views both visible and infrared light, which have been combined here into a color composite that generally shows glacial ice in light blue, snow in white, vegetation in green, bare rock in grays and tans, and the ocean (foreground) in dark blue. The back (northern) edge of the data set forms a false horizon that meets a false sky.
2010-02-13
EAST NEWS
Science Source
NASA
bj4987
0,6MB
17cm x 8cm przy 300dpi
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