GeoScience Web Ring Remotely sensed images and data are important tools used by geologists, cartographers, and other earth scientists, as well as planetary scientists. The USGS TerraWeb site offers information and images for a variety of projects involving subjects such as mapping, change detection, and resource evaluation. The best starting point for those interested in learning more about remote sensing and image processing in the earth sciences is the USGS TerraWeb Homepage. Earth Forces Use of remotely sensed data collected over a period of time is an excellent way to track changes on the Earth's surface or in the atmosphere. Earth Forces topics on USGS TerraWeb include change detection and mapping the Earth to detect changes due to wind, rain, weather patterns, and urban growth.
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