USGS - science for a changing world

Science Topics

Science Topics term usage Sunday, 2007-10-07

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

Scripts used

917science
110kwic
61combine

Browse terms chosen

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

55earthquakes
53climate change
48volcanoes
39geographic information systems (GIS)
20earthquake occurrences
13earth structure
12geochemistry
11acid deposition
10ground water
10geologic history
9tsunamis
8contamination and pollution
8biodiversity
8ground-water flow
8floods
8human impacts
7endangered species
7tectonic processes
7hurricanes
7topics
7energy resources
6rocks and deposits
6health and disease
6animals
6precipitation (atmospheric)
5social sciences
5maps and atlases
5ecosystems
5global warming
5erosion
5sedimentation
5river systems
5landslides
5aquatic ecosystems
4water quality
4population and community ecology
4magnetic field (earth)
4atmospheric and climatic processes
4igneous rocks
4fishery resources

KWIC index letters chosen

bar graph showing usage of each letter

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Page Last Modified: Friday, 25-Apr-2008 17:34:58 EDT