USGS - science for a changing world

Science Topics

Science Topics term usage Thursday, 2007-06-21

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

Scripts used

1423science
110kwic
57combine

Browse terms chosen

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

124streamflow
81geographic information systems (GIS)
35earthquakes
29stream-gage measurement
19water properties
15volcanoes
14water supply and demand
14acid deposition
13rocks and deposits
13earth structure
13human impacts
11energy resources
11contamination and pollution
10economic geology
10tectonic processes
10mineral resources
9climate change
9floods
9geologic history
9ground-water flow
9ground water
9volcanic activity
8animals
8invasive species
8ecosystems
8sediment transport
8aquatic ecosystems
8map coordinate systems
8ecology
8earthquake occurrences
8biodiversity
7invertebrates
7surface water (non-marine)
7industrial pollution
7maps and atlases
7stream discharge
7remote sensing
7lakes
7river systems
6water use

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