USGS - science for a changing world

Science Topics

Science Topics term usage Monday, 2007-06-25

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

Scripts used

1288science
103kwic
59combine

Browse terms chosen

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

103geographic information systems (GIS)
55earthquakes
34volcanoes
30acid deposition
21earthquake occurrences
16earth structure
13tectonic processes
13maps and atlases
12mineral resources
12sediment transport
10climate change
10ground water
10streamflow
9desert ecosystems
9geography
9aerial photography
9rocks and deposits
9river systems
8field sampling
8fires
8real-time monitoring and reporting
8stream-gage measurement
8topography
8contamination and pollution
8avian influenza
8geologic structure
8energy resources
7water quality
7geologic history
7geochemistry
7animals
7tsunamis
7oil resources
7floods
7marine geology
7aquatic ecosystems
7geospatial datasets
7gravitational field (earth)
7map coordinate systems
6land surface characteristics

KWIC index letters chosen

bar graph showing usage of each letter

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Page Last Modified: Friday, 25-Apr-2008 17:34:57 EDT