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![]() Northern Arizona:Landsat TM image, 245 color composite. June 22, 1991. (610 kb) | What is
Terrestrial Remote Sensing? Terrestrial Remote Sensing (TRS) deals with gathering information about the Earth from a distance. This can be done from a few meters off the Earth's surface, an aircraft flying hundreds to thousands of meters above the surface, or a satellite orbiting hundreds of kilometers above the Earth. |
![]() | Why Use
Remote Sensing Techniques? Relative to surface sampling, remotely sensed satellite, airborne, and shipborne images have improved spatial coverage that can help study, map, and monitor the Earth's surface at local and/or regional scales. Advantages offered by remotely sensed image data include:
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Remotely sensed image data can be used by themselves or are often merged with other spatial data, such as Digital Elevation Models (DEMs) or bathymetry data. The DEMs and bathy data are converted into raster images and can be manipulated, processed, enhanced, and analyzed similar to remotely sensed images.
Within our group we have developed expertise and capabilities to work with satellite multispectral, airborne photos, shipborne sidescan sonar, and DEM digital images. The capabilities include geometric and radiometric calibration and corrections, digital mosaicking, multitemporal change detection, and extraction and mapping of earth science information for various applications. | ![]() San Francisco Bay Area:Shaded Relief Image generated from DEMs. This type of image is useful for structural mapping. (280 kb) |
Examples of some of our remote sensing and digital analyses results include:
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Members of our group are: | |
Pat Chavez
Remote Sensing Scientist and Group Leader (520) 556-7221 pchavez@TerraWeb.wr.usgs.gov | Stuart Sides
Computer Scientist ssides@TerraWeb.wr.usgs.gov |
Miguel Velasco
Image Processor mvelasco@TerraWeb.wr.usgs.gov | Deborah Lee Soltesz
Web Mistress webman@TerraWeb.wr.usgs.gov |
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U.S. Department of the Interior |
U.S. Geological Survey |
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