USGS - science for a changing world

Science Topics

Science Topics term usage Saturday, 2008-01-12

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

Scripts used

1112science
128kwic
85combine

Browse terms chosen

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

42geographic information systems (GIS)
28earthquakes
19bacteria
18volcanoes
13water resources
10rocks and deposits
9ground-water flow
9aerial photography
9desert ecosystems
9overfishing
8contamination and pollution
8global warming
8earth structure
7land surface characteristics
7river systems
7global change
7mathematical modeling
7ground water
6maps and atlases
6climate change
6animals
6endangered species
6human impacts
6engineering sciences
6lithostratigraphy
6earthquake occurrences
6water quality
5ocean salinity
5aquifers
5mining hazards
5drainage basins
5oil resources
5social sciences
5freshwater ecosystems
5plants (organisms)
5volcanic activity
5natural gas resources
5wildlife
5ocean characteristics
5land surveying

KWIC index letters chosen

bar graph showing usage of each letter

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Page Last Modified: Friday, 25-Apr-2008 17:35:00 EDT