USGS - science for a changing world

Science Topics

Science Topics term usage Thursday, 2007-06-14

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

Scripts used

1639science
113kwic
70combine

Browse terms chosen

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

97geographic information systems (GIS)
87geologic structure
60earthquakes
25volcanoes
25earthquake occurrences
18earth structure
17gaging stations
15streamflow
15tectonic processes
14surface water (non-marine)
14hydrology
14sediment transport
13human impacts
12acid deposition
12landslides
11aerial photography
11volcanic activity
11real-time monitoring and reporting
10energy resources
10map coordinate systems
10tsunamis
10contamination and pollution
9water resources
9hurricanes
8hazards
8natural gas resources
8climate change
8animals
8ground-water quality
8mineral resources
8cartography
8geolocation measurement
8erosion
8floods
8ocean temperature
7lakes
7earthquake probabilities
7ocean characteristics
7mine sites
7structure contours

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