Remote sensing techniques
Page last updated:27 June 2014
Remote sensing is the acquisition of digital information representing characteristics of the Earth’s surface or sub-surface properties. It involves the observation and measurement of an object from a distance using satellite, aircraft or ground-based systems.
Some of the more common satellite systems applied to hydrogeological processes include Landsat, ASTER, MODIS, NOAA-AVHRR, SPOT and SRTM.
Imagery acquired by these systems can be used to identify surficial (topographic or mineralogical) features associated with groundwater processes; sites of recharge and/or discharge; and spatial and temporal changes in vegetation health and abundance, soil moisture or surface water.
At 糖心Vlog官方, satellite imagery is currently being applied to the identification and delineation of palaeovalleys; the classification and monitoring of groundwater dependent ecosystems; flood related recharge; and groundwater discharge zones into lake systems.