Mathematics – Logic
Scientific paper
Aug 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008georl..3516502k&link_type=abstract
Geophysical Research Letters, Volume 35, Issue 16, CiteID L16502
Mathematics
Logic
1
Cryosphere: Glaciers, Cryosphere: Snowmelt, Cryosphere: Remote Sensing
Scientific paper
We advance an approach to use satellite passive microwave observations to track valley glacier snowmelt and predict timing of spring snowmelt-induced floods at the terminus. Using 37 V GHz brightness temperatures (Tb) from the Special Sensor Microwave Imager (SSM/I), we monitor snowmelt onset when both Tb and the difference between the ascending and descending overpasses exceed fixed thresholds established for Matanuska Glacier. Melt is confirmed by ground-measured air temperature and snow-wetness, while glacier hydrologic responses are monitored by a stream gauge, suspended-sediment sensors and terminus ice velocity measurements. Accumulation area snowmelt timing is correlated (R2 = 0.61) to timing of the annual snowmelt flood peak and can be predicted within +/-5 days.
Denner J.
Evenson E.
Goetz S.
Kopczynski S.
Larson G.
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