Mauri Pelto in the field
Aug 27, 2013Meet Mauri Pelto, Glaciologist

At a small college in Dudley, Mass., a professor of Environmental Science is doing big things. Glaciologist Mauri Pelto is using Landsat imagery to monitor glaciers around the world from his office at Nichols College.

Jan 22, 2013What is the Economic Value of Satellite Imagery?

Does remote-sensing information, such as that from Landsat and similar Earth-observing satellites, provide economic benefits to society, and can this value be estimated? Using satellite data for northeastern Iowa, U.S. Geological Survey scientists modeled the relations among land uses, agricultural production, and dynamic nitrate (NO3) contamination of aquifers.

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 information on the amount and condition of dry biomass on the ground, which acts as fuel that feeds […]

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 by irrigated farming. If future climate change leads to increased temperatures and less […]

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 forest within a few minutes and 60 people were dead or missing. In the following nine hours, […]

Landsat false-color infrared images of Rondônia, Brazil.
Jan 14, 1992Monitoring deforestation

Location: Rondônia, Brazil Source: USGS Earthshots These images show a portion of the state of Rondônia, Brazil, in which tropical deforestation has occurred. The 1975 and 1986 images are MSS data. The 1992 image is TM data. Approximately 30% (3,562,800 sq km) of the world’s tropical forests are in Brazil. The estimated average deforestation rate […]

Landsat TM image of the Harrisburg region acquired on Oct. 30, 1984.
Oct 30, 1984Mapping major geologic features

Location: Harrisburg, Pennsylvania This Landsat view shows Harrisburg and the Appalachian Mountains of central Pennsylvania. The Piedmont province is visible in the lower right corner. The Great Valley runs SW-NE across the center of view, and the Valley and Ridge province occupies the northwest portion of scene. The city of Harrisburg is the blue-grey patch next […]