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Land surface characteristics
Features and attributes of earth's land surface.
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Eastern Earth Surface Processes Team [More info]
The Eastern Earth Surface Processes Team provides geologic mapping regional geologic studies to determine stratigraphy and geologic structure, topical studies to understand geologic and surficial processes, and syntheses of earth science data.
PDF Landsat Data Continuity Mission [More info]
A partnership between NASA and USGS to assure continuous satellite imaging of the earth's surface that was begun 40 years ago.
PDF Landsat--Earth observation satellites [More info]
Explains the long history of this series of satellites, from which we have obtained a wealth of information. Includes a summary of the scientific capabilities of the sensors each satellite carried, and describes what we can do with this information.
Landsat: A Global Land-Imaging Project [More info]
A visible, long-term record of natural and human-induced changes on the global landscape since 1972.
PDF Monitoring floods and fires during the summer of 2011--The value of the Landsat satellite 40-year archives [More info]
Examples showing the use of historical satellite imagery for assessing the extent and severity of landscape hazards such as fires and floods.
National land cover characterization [More info]
Homepage for the National Land Cover Data (NLCD), a land cover classification scheme, for the United States based on data derived from Landsat Thematic Mapper satellite data. Includes links to description, products, accuracy, and program partners.
PDF Advanced Remote Sensing Research [More info]
New and experimental methods of analyzing geospatial imagery, including detailed spectral analysis of land surface materials, historical image analysis, and long wave infrared image analysis.
PDF Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) Overview [More info]
General characteristics and spatial resolution of imagery products available from this type of sensor.
Assessing the impacts of climate variability and change on the Nation's resources [More info]
Site for a USGS project under the U.S. Global Change Research Program for a national assessment of the impacts of climate variability and change on resources with links to impacts in Alaska, western U.S., public lands, and water resources.
PDF Candidate cave entrances on Mars [More info]
Newly discovered candidate cave entrances into Martian near-surface lava tubes, volcano-tectonic fracture systems, and pit craters and describes their characteristics and exploration possibilities.
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