Forests in SE U.S.
Jan 17, 2013Detecting Forest Change in the Southeast U.S.

Jan 17, 2013 • The southeastern United States is a hotspot for forestry activity. The cyclical harvest and planting of trees on lands dedicated to timber and pulp production result in some of the highest rates of forest change observed in the country. Over the past 40 years scientists have used USGS-NASA Landsat satellite data […]

Washington's Olympic Peninsula
Jan 16, 2013Determining range readiness, biomass and health

Contributor: Curtis E. Woodcock, Boston University Fire, drought, and humans all can destroy forests and their ecosystems. While much attention is paid to deforestation in tropical rainforests, very few comprehensive studies have been done to address changes in the Earth’s temperate conifer forests. Temperate conifer forests lie at latitudes above tropical forests and below boreal […]

Jan 14, 2013Sensing Forest Disturbance: Landsat Sees Insect Outbreaks From Space

Jan 14, 2013 • A new way of studying and visualizing Earth science data from a NASA and U.S. Geological Survey satellite program is resulting in, for the first time, the ability to tease out the small events that can cause big changes in an ecosystem. Called LandTrendr, this computer program is able to find […]

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 of portions of six Landsat TM scenes. Data were collected between 5/29/88 and 6/14/88, with scenes along the […]

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 forest loss over a decade from the mid-1970s to mid-1980s found that an average of 6200 square miles of […]

Maricopa Agricultural Center, Arizona.
May 21, 1997Precision farming land management

Contributor: Susan Moran, U.S. Department of Agriculture For farmers and land managers, increasing crop yields and cutting costs while reducing environmental pollution is a constant challenge. To accomplish this goal, many farm managers are looking for new technologies to help them decide when and where to irrigate, fertilize, seed crops, and use herbicides. Currently the […]

mosaic of the Imperial Valley
Jun 30, 1992Monitoring irrigation practices

Location: Imperial Valley, California Source: USGS Earthshots The Imperial Valley is actually an extension of the Gulf of California, cut off from the Gulf by the Colorado River’s delta fan. The area south of the border is known as the Mexicali Valley. In these images, several cities are visible within the area of irrigated agriculture […]

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 […]