DocumentCode :
339494
Title :
Snow cover mapping capabilities using RADARSAT standard mode data
Author :
Guneriussen, Tore ; Johnsen, Harald ; Lauknes, Inge
Author_Institution :
NORUT IT Ltd., Tromso, Norway
Volume :
3
fYear :
1999
fDate :
1999
Firstpage :
1798
Abstract :
A total of 21 RADARSAT SLC data from Heimdalen area, Norway (61°N, 9°E) during snowmelt in 1997 have been geocoded and recalibrated and analysed for temporal and incidence angle dependencies. The study area is 128 km2 catchment area covering altitudes from 1053 to 1853 m, where most of the area is above the treeline. The difference between wet snow and bare ground was found to be 13 dB for Standard Beam Mode (S) S, while the difference in S2 data the day after was 6 dB. The increase contrast was explained by the difference in incidence angle. This increased contrast between wet snow and bare ground for higher incidence angle are supported by surface scattering model results. Backscattering from dry snow is 2-3 dB lower than for bare ground. Temporal backscattering behaviour correspond to snow temperature measurements and demonstrates the capability of detecting the snow melt onset
Keywords :
backscatter; hydrological techniques; radar cross-sections; remote sensing by radar; snow; spaceborne radar; synthetic aperture radar; AD 1997; Heimdalen; Norway; RADARSAT; RADARSAT SLC; SAR; Standard Beam Mode; backscattering; hydrology; incidence angle; measurement technique; radar remote sensing; radar scattering; snow cover; snow melt onset; snowcover; snowmel; snowpack; spaceborne radar; standard mode data; synthetic aperture radar; temporal variation; terrain mapping; wet snow; Backscatter; Density measurement; Ice surface; Particle scattering; Radar scattering; Rough surfaces; Snow; Surface roughness; Surface topography; Volume measurement;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Geoscience and Remote Sensing Symposium, 1999. IGARSS '99 Proceedings. IEEE 1999 International
Conference_Location :
Hamburg
Print_ISBN :
0-7803-5207-6
Type :
conf
DOI :
10.1109/IGARSS.1999.772099
Filename :
772099
Link To Document :
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