Science Topics term usage 2006-11-02

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.)

94	volcanoes
91	earthquakes
60	geographic information systems (GIS)
52	grain-size analysis
34	earth structure
24	erosion
24	human impacts
23	tectonic processes
23	health and disease
23	water quality
21	contamination and pollution
20	earthquake occurrences
16	acid deposition
15	endangered species
15	streamflow
14	aerial photography
14	floods
14	mineral resources
14	oil resources
14	energy resources
14	tsunamis
13	land use and land cover
13	desert ecosystems
13	hazards
13	ground-water flow
13	climate change
12	magnetic field (earth)
12	hurricanes
12	geologic history
12	agricultural water use
11	outer core (earth)
11	water cycle
11	invasive species
10	rocks and deposits
10	ground water
10	precipitation (atmospheric)
10	landslides
9	water use
9	droughts
9	coastal zones

Science Topics term usage Thursday, 2006-11-02