Science Topics term usage 2008-12-17

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.)

552	earthquakes
236	earthquake occurrences
113	volcanoes
110	maps and atlases
67	real-time monitoring and reporting
66	USGS map servers
58	mineral resources
50	topographic maps
49	floods
38	climate change
37	geospatial analysis
36	energy resources
34	ground water
34	water quality
30	remote sensing
23	droughts
22	invasive species
22	surface water (non-marine)
22	contamination and pollution
21	avian influenza
19	fires
18	acid deposition
17	nonmetallic mineral resources
16	animals
15	earthquake probabilities
15	geologic maps
15	environmental health (human)
14	earth structure
13	seismology
11	stream discharge
11	aerial photography
11	California
11	glaciation
10	natural gas resources
10	snow and ice cover
9	topography
9	water properties
8	impact cratering
8	ecology
8	producers (organisms)

Science Topics term usage Wednesday, 2008-12-17