Science Topics term usage 2009-04-19

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.)

360	earthquakes
164	earthquake occurrences
151	volcanoes
92	maps and atlases
69	real-time monitoring and reporting
50	climate change
46	floods
45	USGS map servers
41	ground water
39	water quality
38	topographic maps
37	mineral resources
36	surface water (non-marine)
34	contamination and pollution
33	energy resources
32	remote sensing
28	droughts
25	invasive species
24	geologic maps
19	geospatial analysis
17	environmental health (human)
13	fires
13	tectonic processes
13	avian influenza
13	earthquake probabilities
11	hydrology
11	acid deposition
9	seismology
9	surface water quality
9	ground-water flow
8	pharmaceutical contamination
8	health and disease
8	ecological processes
8	biological and physical processes
8	global warming
8	erosion
8	water properties
8	endangered species
8	plants (organisms)
8	ground-water quality

Science Topics term usage Sunday, 2009-04-19