Science Topics term usage 2009-04-09

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.)

936	earthquakes
406	earthquake occurrences
232	volcanoes
116	maps and atlases
101	real-time monitoring and reporting
60	water quality
59	floods
55	mineral resources
52	USGS map servers
51	climate change
44	energy resources
42	topographic maps
41	geospatial analysis
40	surface water (non-marine)
35	droughts
35	contamination and pollution
34	ground water
32	avian influenza
30	earthquake probabilities
28	remote sensing
27	invasive species
24	fires
23	geologic maps
21	seismology
17	environmental health (human)
16	human impacts
14	volcanic activity
13	magnetic field (earth)
12	river systems
12	acid deposition
12	surface water quality
11	oil resources
11	hazards
11	global warming
11	health and disease
11	endangered species
10	land use and land cover
10	aquatic ecosystems
10	tectonic processes
9	soil resources

Science Topics term usage Thursday, 2009-04-09