Science Topics term usage 2009-05-12

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.)

457	earthquakes
190	earthquake occurrences
148	volcanoes
123	maps and atlases
80	real-time monitoring and reporting
60	USGS map servers
55	mineral resources
53	floods
49	topographic maps
47	climate change
45	surface water (non-marine)
44	ground water
42	contamination and pollution
40	animals
38	energy resources
36	water quality
29	acid deposition
26	remote sensing
24	geospatial analysis
24	invasive species
23	tsunamis
23	avian influenza
22	environmental health (human)
22	health and disease
20	commercial water use
20	desert ecosystems
19	human impacts
19	droughts
18	seismology
17	river systems
17	geologic maps
15	fires
14	earth structure
13	global warming
13	ecosystems
13	endangered species
12	ground-water flow
12	earthquake probabilities
11	soil resources
11	land use and land cover

Science Topics term usage Tuesday, 2009-05-12