A remote sensing technique which uses the reflection of pulsed high frequency radio waves to determine the speed, direction, and distance of faraway objects.
Advancing migratory bird conservation and management by using radar: An interagency collaboration [ More info] Doppler radar imaging is used for tracking the migration and behavior of bird populations. With the U.S. Fish and Wildlife Service and other agencies, USGS uses this technology to assist decision makers balance natural and industrial concerns
Data from the Shuttle Radar Topography Mission [ More info] Topographic observations from the SRTM, both original and reprocessed to correct missing and spurious data points.
Management and Research Applications of Long-range Surveillance Radar Data for Birds, Bats, and Flying Insects [ More info] Explains how radar can be used to measure the density, speed, direction, altitude, and location of flocks of animals in flight.
A volcano rekindled; the renewed eruption of Mount St. Helens, 2004-2006 [ More info]
Alphabetical Index of Topics
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