Title :
Observations of variations in ERS-1 SAR image intensity associated with forest fires in Alaska
Author :
Kasischke, Eric S. ; Bourgeau-Chavez, Laura L. ; French, Nancy H F
Author_Institution :
Center for Earth Sci., Environ. Res. Inst. of Michigan, Ann Arbor, MI, USA
fDate :
1/1/1994 12:00:00 AM
Abstract :
Investigations have shown that fires in boreal forests result in characteristic responses which are recorded on ERS-1 SAR imagery. Using one of the many fire signatures observed on ERS-1 SAR imagery, the analysis of the data revealed there is >10 dB in variation in image intensity within the burned areas on the SAR images. Possible explanations for this variation include increases in soil moisture, increased surface roughness exposed to the incoming microwave radiation, and damage to the vegetation canopy by the fire
Keywords :
fires; forestry; geophysical techniques; remote sensing; remote sensing by radar; synthetic aperture radar; Alaska; ERS-1; SAR; SHF; USA; United States; backscatter intensity; boreal; burned area; fire signature; forest fire; forestry; geophysical measurement technique; image intensity; imagery; land surface remote sensing; microwave; radar cross section; soil moisture; surface roughness; synthetic aperture radar; vegetation; Data analysis; Dielectrics; Fires; Microwave radiometry; Microwave theory and techniques; Remote sensing; Soil moisture; State estimation; Surfaces; Vegetation mapping;
Journal_Title :
Geoscience and Remote Sensing, IEEE Transactions on
