Science Topics term usage 2008-06-30

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.)

428	earthquakes
173	earthquake occurrences
135	maps and atlases
103	real-time monitoring and reporting
95	volcanoes
77	energy resources
65	floods
62	mineral resources
62	USGS map servers
55	fires
50	surface water (non-marine)
40	ground water
40	oil resources
40	climate change
39	water quality
37	geospatial analysis
34	invasive species
34	droughts
31	remote sensing
31	avian influenza
28	contamination and pollution
20	environmental health (human)
17	earthquake probabilities
14	aquatic ecosystems
13	natural gas resources
12	river systems
10	endangered species
9	seismology
9	tectonic processes
9	coal resources
8	land use and land cover
8	health and disease
7	acid deposition
7	erosion
7	surface water quality
7	earth structure
7	desert ecosystems
7	stream-gage measurement
6	streamflow
6	ground-water flow

Science Topics term usage Monday, 2008-06-30