dem srtm data elevation digital topography models global sources mission model gis earth nasa radar shuttle space launched meter gisgeography
ifsar hillshade displayed dems srtm glacier
srtm data usa elevation digital world distributed levels only two radar topography shuttle mission
attributes topographic deg slope figure
calibrated dem nhess srtm delimitation flood areas elevation figure digital original model
altitude groundwater srtm derived obtained scirp
jharkhand srtm cartosat aspect slope altitude hill india
assessment sensed attributes dgps topographic dems remotely models infrastructure
nile delta dem residuals study global figure