Science Topics term usage 2009-05-21

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.)

939	earthquakes
479	earthquake occurrences
158	volcanoes
100	maps and atlases
96	real-time monitoring and reporting
58	USGS map servers
55	mineral resources
40	droughts
40	ground water
38	topographic maps
37	floods
36	energy resources
34	geospatial analysis
32	climate change
31	surface water (non-marine)
30	invasive species
29	water quality
29	earthquake probabilities
26	geologic maps
26	remote sensing
21	avian influenza
20	environmental health (human)
17	contamination and pollution
17	river systems
17	seismology
16	fires
15	human impacts
15	health and disease
15	California
12	acid deposition
11	desert ecosystems
10	natural gas resources
9	land use and land cover
9	soil resources
9	animals
8	hazards
8	hydrology
7	ground-water flow
7	life sciences
7	volcanic activity

Science Topics term usage Thursday, 2009-05-21