Assessing long-term variations in sagebrush habitat – characterization of spatial extents and distribution patterns using multi-temporal satellite remote-sensing data George Xian a , Collin Homer b & Cameron Aldridge c a ARTS, US Geological Survey (USGS) Earth Resources Observation and Science Center, Sioux Falls, SD, 57198, USA b US Geological Survey (USGS) Earth Resources Observation and Scie...

1 Department of Geography and Program in Planning, University of Toronto, 100 St, George St, Room 5047, Toronto, Ontario, Canada M5S 3G3 2 Natural Resources Canada, Canadian Forest Service, 5320–122nd St, Edmonton, AB, Canada T6H 3S5 3 SAIC, US Geological Survey, EROS Data Center, Sioux Falls, South Dakota 57198, USA 4 Research Associateship Programs, National Research Council, at USGS EROS Dat...

The California Institute ofTechnology (Caltech), the United States Geological Survey (USGS), and the California Department of Conservation, Division of Mines and Geology (CDMG) are completing the implementation of TriNet, a modern seismic information system for southern California. TriNet consists of two elements, the Caltech-USGS element and the CDMG element (Mori eta!., 1998). The CaltechUSGS...

What is the chance that an earthquake of magnitude 6.7 or greater will occur before the year 2030 in the San Francisco Bay Area? The U.S. Geological Survey estimated the chance to be 0.7 ± 0.1 (USGS, 1999). In this paper, we try to interpret such probabilities. Making sense of earthquake forecasts is surprisingly difficult. In part, this is because the forecasts are based on a complicated mixtu...

In the fall of 2001, NASA’s Deep Space 1 (DS1) probe imaged Comet Borrelly during a flyby encounter. Three of the Borrelly images have geometry suitable to photogrammetrically map the nucleus, which form two stereopairs with an expected precision (EP) of ~410 m and ~670 m each. DS1 team members at the USGS and DLR have independently produced digital elevation models (DEMs) of Borrelly. Automati...

a USGS Alaska Geographic Science Office, 4230 University Drive, Anchorage, AK, United States b Department of Geography, University of Maryland, College Park, MD, United States c USGS, Alaska Cooperative Fish and Wildlife Research Unit, 214 Irving I Building, University of Alaska, Fairbanks, AK, United States d Department of Integrative Biology, University of Guelph, Guelph, ON, Canada e Michiga...