Science Topics term usage 2009-04-13

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.)

576	earthquakes
293	volcanoes
270	earthquake occurrences
127	maps and atlases
111	real-time monitoring and reporting
59	floods
55	USGS map servers
49	climate change
48	energy resources
47	topographic maps
46	remote sensing
46	ground water
42	geospatial analysis
41	water quality
41	geologic maps
40	mineral resources
37	surface water (non-marine)
32	contamination and pollution
27	droughts
22	avian influenza
22	invasive species
19	acid deposition
18	environmental health (human)
17	seismology
17	fires
17	health and disease
15	earthquake probabilities
14	volcanic activity
14	oil resources
14	human impacts
12	earth structure
12	river systems
12	ground-water flow
11	tectonic processes
10	geologic history
10	life sciences
10	water supply and demand
10	streamflow
10	ground-water quality
9	desert ecosystems

Science Topics term usage Monday, 2009-04-13