Science Topics term usage 2009-02-13

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.)

474	earthquakes
247	volcanoes
204	earthquake occurrences
122	maps and atlases
76	real-time monitoring and reporting
70	USGS map servers
65	floods
60	climate change
43	mineral resources
42	water quality
42	energy resources
41	topographic maps
38	remote sensing
37	surface water (non-marine)
35	droughts
34	contamination and pollution
33	avian influenza
30	geologic maps
29	invasive species
29	geospatial analysis
28	ground water
25	animals
22	fires
21	surface water quality
16	hydrology
15	earthquake probabilities
15	tectonic processes
15	geographic information systems (GIS)
14	environmental health (human)
13	USGS maps on demand
13	volcanic activity
12	human impacts
12	global warming
12	health and disease
11	endangered species
11	reports
10	ecosystems
10	ground-water quality
10	seismology
10	earth structure

Science Topics term usage Friday, 2009-02-13