Science Topics term usage 2009-03-18

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.)

607	earthquakes
321	volcanoes
291	earthquake occurrences
114	maps and atlases
97	real-time monitoring and reporting
69	mineral resources
68	floods
65	energy resources
60	USGS map servers
60	climate change
57	ground water
51	surface water (non-marine)
49	topographic maps
49	water quality
47	contamination and pollution
41	geospatial analysis
40	droughts
40	remote sensing
37	invasive species
31	avian influenza
24	seismology
24	geologic maps
23	environmental health (human)
21	oil resources
20	fires
18	human impacts
15	river systems
14	earthquake probabilities
14	global warming
14	streamflow
13	endangered species
13	acid deposition
12	health and disease
12	transect sampling
11	plants (organisms)
11	biological and physical processes
11	aerial photography
10	drainage basins
10	ground-water quality
10	desert ecosystems

Science Topics term usage Wednesday, 2009-03-18