USGS - science for a changing world

Science Topics

Science Topics term usage Saturday, 2007-05-19

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

Scripts used

1388science
133kwic
31combine

Browse terms chosen

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

52geographic information systems (GIS)
29volcanoes
27earthquakes
21field experiments
15earthquake occurrences
13acid deposition
12earth structure
11coalbed methane resources
11maps and atlases
11ground-water flow
10energy resources
10climate change
9streamflow
9floods
9animals
9cartography
8real-time monitoring and reporting
8river systems
8ground water
8tsunamis
8erosion
8land use and land cover
8contamination and pollution
7tectonic processes
7oil resources
7geologic history
7rocks and deposits
7natural gas resources
7land surface characteristics
7aquatic ecosystems
7global warming
7ocean characteristics
7desert ecosystems
7ocean-atmosphere interaction
6vertebrates
6tides (oceanic)
6hazards
6magnetic field (earth)
6water quality
6GPS measurement

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