Title :
Modeling the backscatter response due to salt crust development
Author :
Archer, D.J. ; Wadge, G.
Author_Institution :
Nat. Resources Inst., Greenwich Univ., UK
fDate :
10/1/2001 12:00:00 AM
Abstract :
The ERS-1 synthetic aperture radar (SAR) is shown to be highly sensitive to temporal variations in the mineral surface of the Chott el Djerid playa, Tunisia. Field measurements and modeling results confirm that the primary control on the backscatter response is due to salt crust development. Brine-rich moisture exerts a secondary control. The effect of temperature, salinity, and mineralogy are negligible. An integral equation model (IEM) solution with mean parameters accurately represents the observed behavior
Keywords :
backscatter; geophysical techniques; lakes; radar cross-sections; radar theory; remote sensing by radar; synthetic aperture radar; terrain mapping; Chott el Djerid; ERS-1; North Africa; SAR; Tunisia; backscatter; dielectric mixing model; geophysical measurement technique; integral equation model; lake bed; land surface; mineral surface; model; playa; radar remote sensing; radar scattering; salt crust; simulation; surface roughness; synthetic aperture radar; temporal variations; terrain mapping; Backscatter; Crystals; Minerals; Moisture control; Moisture measurement; Remote monitoring; Rough surfaces; Sediments; Surface roughness; Synthetic aperture radar;
Journal_Title :
Geoscience and Remote Sensing, IEEE Transactions on
