USGS - science for a changing world

Science Topics

Science Topics term usage Sunday, 2009-05-24

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

Scripts used

1595science
301combine
45kwic

Browse terms chosen

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

500earthquakes
252earthquake occurrences
74volcanoes
61maps and atlases
35real-time monitoring and reporting
32USGS map servers
32mineral resources
27surface water (non-marine)
24topographic maps
22energy resources
20ground water
19droughts
17climate change
15invasive species
15geologic maps
14earthquake probabilities
14geospatial analysis
13water quality
12avian influenza
12contamination and pollution
12floods
12environmental health (human)
12remote sensing
11seismology
10animals
8river systems
7nutrient content (water)
7sediment transport
6streamflow
6natural gas resources
6earth structure
6California
5fires
5health and disease
5USGS maps on demand
5magnetic field (earth)
5surface-water level
5desert ecosystems
5ground-water flow
4metallic ores

KWIC index letters chosen

bar graph showing usage of each letter

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Page Last Modified: Thursday, 28-May-2009 09:48:10 EDT