USGS - science for a changing world

Science Topics

Science Topics term usage Saturday, 2007-03-03

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

Scripts used

958science
78combine
68kwic

Browse terms chosen

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

75geographic information systems (GIS)
58earthquakes
34volcanoes
24ecosystem management
17acid deposition
15earth structure
14climate change
12tectonic processes
12rocks and deposits
11animals
9earthquake occurrences
9maps and atlases
9geologic history
9ground water
9wildlife
9energy resources
8magnetic field (earth)
7aerial photography
7endemic species
7mineral resources
7floods
7ground-water flow
7water resources
6contamination and pollution
6land surface characteristics
6endangered species
6water quality
6surface water (non-marine)
6streamflow
6tsunamis
6ocean temperature
5ocean characteristics
5land subsidence
5sea-floor characteristics
5mining hazards
5fires
5geologic structure
5ecology
5hurricanes
5oil resources

KWIC index letters chosen

bar graph showing usage of each letter

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