USGS - science for a changing world

Science Topics

Science Topics term usage Sunday, 2007-04-08

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

Scripts used

819science
53kwic
34combine

Browse terms chosen

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

70geographic information systems (GIS)
44volcanoes
44earthquakes
32carbon isotope analysis
14geochemistry
11earthquake occurrences
10river systems
9tectonic processes
9maps and atlases
9climate change
8water chemistry
8energy resources
8tsunamis
7surface water (non-marine)
7ecological processes
7geologic history
7global warming
7acid deposition
6glaciation
6water resources
6hurricanes
6animals
5sediment transport
5coastal zones
5gold ores
5contamination and pollution
5earth structure
5industrial pollution
5ocean temperature
5water quality
4information system design and development
4real-time monitoring and reporting
4desert ecosystems
4land use and land cover
4hazards
4life sciences
4remote sensing
4seismology
4oil resources
4ground water

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