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SAR Imagery Applied to the Monitoring of Hyper-Saline Deposits: Death Valley Example (CA)The present study aims at understanding the influence of salinity on the dielectric constant of soils and then on the backscattering coeff cients recorded by airborne/spaceborne SAR systems. Based on dielectric measurements performed over hyper-saline deposits in Death Valley (CA), as well as laboratory electromagnetic characterization of salts and water mixtures, we used the dielectric constants as input parameters of analytical IEM simulations to model both the amplitude and phase behaviors of SAR signal at C, and L-bands. Our analytical simulations allow to reproduce specif c copolar signatures recorded in SAR data, corresponding to the Cottonball Basin saltpan. We also propose the copolar backscattering ratio and phase difference as indicators of moistened and salt-affected soils. More precisely, we show that these copolar indicators should allow to monitor the seasonal variations of the dielectric properties of saline deposits.
Document ID
20150008339
Document Type
Conference Paper
External Source(s)
Authors
Lasne, Yannick (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Paillou, Philippe (L'Observatoire Aquitain des Sciences de l'Univers Floirac, France)
Freeman, Anthony (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Chapman, Bruce (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
May 18, 2015
Publication Date
May 4, 2009
Subject Category
Earth Resources and Remote Sensing
Meeting Information
IEEE RadarCon09 Conference(Pasadena, CA)
Distribution Limits
Public
Copyright
Other
Keywords
evaporites
coplanr phase
backscattering
AIRSAR
ALOS/PALSAR