USGS - science for a changing world

Science Topics

Science Topics term usage Sunday, 2007-01-28

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

Scripts used

1462science
147kwic
41combine

Browse terms chosen

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

67geographic information systems (GIS)
61earthquakes
61volcanoes
28human environmental safety
18ground water
18earthquake occurrences
16tectonic processes
16earth structure
15floods
13mineral resources
13human impacts
12acid deposition
12erosion
12water quality
11aerial photography
11ground-water quality
11geologic structure
11rocks and deposits
11maps and atlases
11biogeography
10economic geology
9climate change
9industrial pollution
9geochemistry
9tsunamis
9animals
8energy resources
8natural resource management
8contamination and pollution
8global warming
8impact cratering
8surface water (non-marine)
8landslides
8streamflow
7planetary bodies
7biogeographic regions
7snow and ice cover
7metallic ores
7precipitation (atmospheric)
7wildlife

KWIC index letters chosen

bar graph showing usage of each letter

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Page Last Modified: Friday, 25-Apr-2008 17:34:55 EDT