Science Topics term usage 2006-12-15

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

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

101	geographic information systems (GIS)
76	volcanoes
69	earthquakes
47	mining hazards
27	earthquake occurrences
25	animals
23	geospatial datasets
19	human impacts
18	contamination and pollution
17	acid deposition
17	ground-water flow
15	maps and atlases
14	tectonic processes
13	rocks and deposits
13	tsunamis
13	earth structure
12	endangered species
12	climate change
12	water chemistry
11	hurricanes
11	geologic structure
10	mineral resources
10	geologic history
10	water quality
10	streamflow
10	desert ecosystems
10	mathematical modeling
9	floods
9	surface water (non-marine)
9	biogeography
9	ground water
9	outer core (earth)
9	snow and ice cover
9	ocean sciences
8	crust (earth)
8	land surface characteristics
8	drainage basins
8	coastal zones
8	plants (organisms)
8	energy resources

Science Topics term usage Friday, 2006-12-15