USGS - science for a changing world

Science Topics

Science Topics term usage Sunday, 2007-06-24

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

Scripts used

1071science
97kwic
34combine

Browse terms chosen

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

59geographic information systems (GIS)
35volcanoes
29earthquakes
23avian influenza
13earth structure
12rocks and deposits
12remote sensing
10land use and land cover
10aerial photography
9acid deposition
8tsunamis
8mineral resources
8geography
7risk assessment
7floods
7streamflow
7human impacts
6contamination and pollution
6hydrology
6droughts
6earthquake occurrences
6tectonic processes
6surface water (non-marine)
6sedimentary rocks
6seismic refraction method
6topography
6oil resources
5ground-water level
5freshwater ecosystems
5ground-water flow
5sediment transport
5GPS measurement
5invasive species
5ground water
5water circulation
5climate change
5map coordinate systems
5geospatial datasets
5ecosystems
5maps and atlases

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