USGS - science for a changing world

Science Topics

Science Topics term usage Sunday, 2007-07-01

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

Scripts used

829science
85kwic
23combine

Browse terms chosen

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

38geographic information systems (GIS)
28metallic ores
25earthquakes
16earth structure
15volcanoes
15floods
14earthquake occurrences
10geologic history
9aerial photography
9acid deposition
8surface water (non-marine)
7human impacts
7information system design and development
7land use and land cover
7water resources
6contamination and pollution
6rocks and deposits
6climate change
6gold ores
6animals
6water properties
5precipitation (atmospheric)
5crust (earth)
5ground water
5desert ecosystems
5snow and ice cover
5hurricanes
5real-time monitoring and reporting
5planetary bodies
5land use change
5industrial pollution
5oil resources
4cartography
4meteorites
4ground-water level
4global change
4marine geology
4geologic structure
4river systems
4biological and physical processes

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