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Mass Balance, Meteorological, Ice Motion, Surface
Altitude, and Runoff Data at Gulkana Glacier, Alaska, 1994 Balance Year
by Rod S. March
U.S. GEOLOGICAL SURVEY
Water-Resources Investigations Report 97-4251
The 1994 measured winter snow, maximum winter
snow, net, and annual balances in the Gulkana Glacier basin were evaluated on the basis of
meteorological, hydrological, and glaciological data obtained in the basin. Averaged over
the glacier, the measured winter snow balance was 1.34 meters on April 29, 1994, 0.9
standard deviation above the long-term average; the maximum winter snow balance, 1.43
meters, was reached on April 18, 1994; the net balance (from September 8, 1993 to
September 17, 1994) was -0.72 meter, 0.7 standard deviation below the long-term average.
The annual balance (October 1, 1992, to September 30, 1993) was -0.88 meter. Ice-surface
motion and altitude changes measured at three index sites document seasonal ice speed and
glacier-thickness changes. Annual stream runoff was 1.93 meters averaged over the basin,
approximately equal to the long-term average.
March, R.S., 1998, Mass balance, meteorological, ice motion, surface altitude, and
runoff data at Gulkana Glacier, Alaska, 1994 balance year: U.S. Geological Survey
Water-Resources Investigations Report 97-4251, 31 p.
[Full Report, Acrobat PDF (938 KB)]
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Maintainer: Rod March
Last update: Monday, December 27, 2010 05:06 PM