Science Topics term usage 2009-02-22

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.)

357	earthquakes
196	volcanoes
141	earthquake occurrences
91	maps and atlases
61	real-time monitoring and reporting
49	mineral resources
45	contamination and pollution
45	USGS map servers
41	energy resources
38	climate change
32	floods
31	ground water
31	water quality
31	remote sensing
31	topographic maps
29	invasive species
29	surface water (non-marine)
25	geospatial analysis
25	droughts
21	geologic maps
17	fires
17	environmental health (human)
16	avian influenza
15	animals
13	natural gas resources
13	endangered species
12	biogeography
11	tectonic processes
11	health and disease
11	surface water quality
11	seismology
10	human impacts
10	earthquake probabilities
10	earth structure
10	oil resources
10	aquatic ecosystems
9	acid deposition
9	ocean characteristics
9	erosion
8	global change

Science Topics term usage Sunday, 2009-02-22