Science Topics term usage 2009-05-05

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.)

736	earthquakes
353	earthquake occurrences
217	volcanoes
143	maps and atlases
99	real-time monitoring and reporting
73	mineral resources
65	energy resources
63	USGS map servers
63	ground water
57	floods
53	surface water (non-marine)
51	water quality
50	contamination and pollution
49	climate change
48	topographic maps
48	droughts
45	remote sensing
37	invasive species
36	geospatial analysis
31	avian influenza
29	geologic maps
28	environmental health (human)
28	earthquake probabilities
25	human impacts
21	acid deposition
20	river systems
20	seismology
18	animals
18	health and disease
18	natural gas resources
16	ground-water flow
16	fires
13	ecosystems
13	pesticide and herbicide contamination
13	sediment transport
12	California
12	oil resources
10	aerial photography
10	earth structure
10	stream discharge

Science Topics term usage Tuesday, 2009-05-05