USGS - science for a changing world

Science Topics

Science Topics term usage Saturday, 2006-12-30

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

Scripts used

603science
38combine
31kwic

Browse terms chosen

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

58geographic information systems (GIS)
26earthquakes
20limnology
17volcanoes
15contamination and pollution
15field sampling
9ground water
8ocean temperature
8tsunamis
7tectonic processes
7cartography
7map coordinate systems
7aerial photography
7topography
6earthquake occurrences
6surface water (non-marine)
6mineral resources
6snow and ice cover
6river systems
5plants (organisms)
5geothermal resources
5health and disease
5endangered species
5earth structure
5land use and land cover
5acid deposition
5geologic structure
4glaciation
4floods
4sedimentary rocks
4climate change
4marine geophysics
4ocean characteristics
4geography
3water hardness
3rocks and deposits
3hurricanes
3specimen collecting
3ecological processes
3energy resources

KWIC index letters chosen

bar graph showing usage of each letter

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