USGS - science for a changing world

Science Topics

Science Topics term usage Saturday, 2007-02-03

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

Scripts used

1074science
62kwic
58combine

Browse terms chosen

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

64geographic information systems (GIS)
47earthquakes
46volcanoes
19earthquake occurrences
17climate change
17oxygen content (water)
15water resources
14water quality
13sea-floor characteristics
13geologic history
12ground water
12volcanic activity
11mineral resources
11tectonic processes
11maps and atlases
11deltas
11contamination and pollution
10tsunamis
10erosion
9human impacts
9rocks and deposits
8endangered species
8acid deposition
8ecotoxicology
7energy resources
7earth structure
7health and disease
7hurricanes
6ground-water flow
6animals
6snow and ice cover
6impact cratering
6geography
6global warming
6land surface characteristics
6hazards
6drainage basins
5earthquake probabilities
5cartography
5floods

KWIC index letters chosen

bar graph showing usage of each letter

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