infrared methods  search
BTgeophysical methods
 .infrared methods
NTAVHRR
 AVIRIS
RTchemical analysis
 backscattering
 geophysical surveys
 remote sensing
 thermal emission
 ERS-1
 infrared spectroscopy
 Thermal Infrared Multispectral Scanner
SNFor surveys, search with geophysical surveys and an area. For surveys, also index geophysical surveys and the area.