Science Topics term usage 2009-04-29

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.)

495	earthquakes
216	volcanoes
215	earthquake occurrences
118	maps and atlases
114	real-time monitoring and reporting
66	floods
66	energy resources
65	USGS map servers
65	climate change
55	avian influenza
55	ground water
46	topographic maps
46	mineral resources
45	water quality
43	surface water (non-marine)
38	geospatial analysis
36	remote sensing
34	contamination and pollution
31	invasive species
28	environmental health (human)
25	droughts
25	geologic maps
24	fires
22	human impacts
21	oil resources
15	river systems
14	seismology
14	hydrogeology
12	ground-water flow
11	desert ecosystems
11	animals
11	health and disease
11	endangered species
11	acid deposition
11	ocean characteristics
11	global warming
10	tectonic processes
10	drainage basins
10	earth structure
10	hydrology

Science Topics term usage Wednesday, 2009-04-29