USGS - science for a changing world

Science Topics

Science Topics term usage Monday, 2007-08-27

This analysis excludes the activity of search-engine spiders, USGS users, and transactions resulting in errors.

Scripts used

1977science
120kwic
111combine

Browse terms chosen

(Table shows only the 40 most frequently chosen terms.)

91geographic information systems (GIS)
80earthquakes
58sea surface temperature
35volcanoes
34earthquake occurrences
27earth structure
24mineral resources
18ground water
17aquatic ecosystems
16animals
16real-time monitoring and reporting
15acid deposition
14streamflow
14tectonic processes
13ground-water flow
13climate change
12tsunamis
12hurricanes
12geologic history
12ocean characteristics
12aerial photography
11water chemistry
11maps and atlases
11hazards
10stream-gage measurement
10volcanic activity
10contamination and pollution
10energy resources
10fires
10land use and land cover
10water quality
10habitats
9birds
9rocks and deposits
9geospatial analysis
9metallic ores
9geologic structure
9drainage basins
9invasive species
9global change

KWIC index letters chosen

bar graph showing usage of each letter

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Page Last Modified: Friday, 25-Apr-2008 17:34:58 EDT