USGS - science for a changing world

Science Topics

Science Topics term usage Sunday, 2006-11-12

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

Scripts used

1244science
73kwic
40combine

Browse terms chosen

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

52volcanoes
36earthquakes
30geographic information systems (GIS)
30maps and atlases
21earth structure
21fishery management
18acid deposition
18tectonic processes
17water quality
15earthquake occurrences
14ecosystems
13drainage basins
13climate change
12geologic structure
12sea-floor characteristics
12rocks and deposits
12floods
12desert ecosystems
12volcanic activity
11water supply and demand
11freshwater ecosystems
11energy resources
11tsunamis
10human impacts
9industrial pollution
9ground water
8magnetic field (earth)
8outer core (earth)
8streamflow
8TMDL
8contamination and pollution
7natural resource extraction
7oil resources
7geologic history
7plants (organisms)
7erosion
7aquatic ecosystems
6biodiversity
6ocean salinity
6ecology

KWIC index letters chosen

bar graph showing usage of each letter

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