USGS - science for a changing world

Science Topics

Science Topics term usage Saturday, 2007-04-14

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

Scripts used

1401science
95kwic
48combine

Browse terms chosen

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

128river systems
71geographic information systems (GIS)
54earthquakes
52volcanoes
19earthquake occurrences
19climate change
18land use and land cover
17ground water
16tsunamis
15global warming
14acid deposition
14energy resources
14earth structure
11tectonic processes
10natural gas resources
9geologic history
9rocks and deposits
9mineral resources
9sea-floor characteristics
9animals
8surface water (non-marine)
8hydrology
8oil resources
8visualization methods
8contamination and pollution
8water resources
8stream discharge
7gold ores
7aerial photography
7streamflow
7water use
6ecosystems
6land regions
6wildlife
6seismology
6magnetic field (earth)
6hazards
6aquatic ecosystems
6stratigraphic sections
5maps and atlases

KWIC index letters chosen

bar graph showing usage of each letter

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Page Last Modified: Friday, 25-Apr-2008 17:34:56 EDT