June 2006


false-color infrared image of U.S./Mexico border
Jun 18, 2006Tracking socioeconomic impacts on land use

Location: California-Mexico Border Source: USGS Earthshots These images show the different land use patterns of El Centro, California, and the urban area of Mexicali/Calexico on the California-Mexico border. From 1970 to 1990, these cities' [...]

Landsat TM mosaic of Minnesota made with six Landsat images
Jun 18, 2006Characterizing forest range vegetation

A mosaic of Landsat Thematic Mapper (TM) images with overlays of aerial photography flightlines (N-S lines) and boundaries of physiographic strata was created to help inventory the forests of Minnesota. The image data for the project consisted [...]

dramatic forest fires that occurred in and adjacent to Yellowstone National Park
Jun 18, 2006Assessing and monitoring grass and forest fires

Contributor: Jan van Wagtendonk, U. S. Geological Survey In recent years, wildland fires have become more intense resulting in increased loss of human life and natural resource damage. An important factor in dealing with this problem is [...]

Estimated usable aquifer lifetime of the High Plains Aquifer on the Nebraska/Colorado border overlayed on a Landsat image.
Jun 18, 2006Assessing drought impact

Contributor: Alexander F. H. Goetz, University of Colorado at Boulder More than 10 percent of the United States' High Plains region is made up of sand dunes and sand sheets that are currently stabilized by the natural grasses growing on them and [...]

Steam from the Pu'u O'o eruption as lava enters the ocean, on the island of Hawai'i in May 2001.
Jun 18, 2006Mapping volcanic surface deposits

Contributor: Luke Flynn, University of Hawaii To understand the complex "plumbing" beneath active volcanic lave lakes and determine the amount of lava flowing from them, Luke Flynn of the University of Hawaii has been using time series of [...]

This Landsat 7 thermal image shows the thermal bar along the shore of Lake Ontario
Apr 21, 2005Monitoring lake inventories and health

Contributor: John Schott, Rochester Institute of Technology As snow begins to melt at the close of winter, large lakes receive warm spring river run-off carrying pollutants that are potentially harmful to phytoplankton and the fish that feed on [...]

False-color infrared images of Mt. St. Helens
May 18, 2000Monitoring volcanic flow activity

Location: Mt. St. Helens, Washington These satellite images show the area around Mount St. Helens, in southwestern Washington, before and after its eruption of May 18, 1980. The initial volcanic blast devastated more than 150 square miles of [...]

image shows urban growth in the Washington D.C. metropolitan region
Jan 15, 2000Monitoring urban growth

Contributor: Jeffrey G. Masek, NASA Goddard Space Flight Center Traffic jams and air pollution in large metropolitan areas are sure signs of expanding populations. Across the globe, 50 percent of the world's population now lives in urban areas, [...]

Jan 15, 2000Monitoring crop and forest harvests

Contributor: David Skole Michigan State University Even though tropical deforestation is a well-known problem, the rate of deforestation in the tropics is currently known to only a very general degree. Recent research using Landsat images of [...]

Landsat false-color infrared image of Long Island, Bahamas.
Jan 15, 1999Mapping shoals, reefs and shallow areas

Location: Long Island, Bahamas The red colors in this Landsat false-color infrared composite image of Long Island, Bahamas, give us an indication of its lush vegetation. The different shades of blue, west of the island represent varying water [...]