USGS - science for a changing world

Science Topics

Science Topics term usage Saturday, 2006-10-14

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

Scripts used

774science
40kwic
39combine

Browse terms chosen

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

30volcanoes
30animal tracking
25geographic information systems (GIS)
23earthquakes
13tectonic processes
10acid deposition
10ocean characteristics
10earthquake occurrences
9human impacts
9earth structure
8maps and atlases
7geochemical processes
7ecosystems
7climate change
6outer core (earth)
6desert ecosystems
6water quality
6contamination and pollution
6energy resources
6invasive species
5mantle (earth)
5topography
5water properties
5ocean salinity
5volcanic activity
5land surface characteristics
5nutrient content (water)
5soil formation
5eutrophication
5precipitation (atmospheric)
5grassland ecosystems
4rocks and deposits
4gravitational field (earth)
4water supply and demand
4ecological processes
4ecology
4global change
4marine ecosystems
4ground-water flow
4nonvascular plants

KWIC index letters chosen

bar graph showing usage of each letter

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