Science Topics term usage 2008-04-08

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
188	volcanoes
157	earthquake occurrences
112	maps and atlases
82	real-time monitoring and reporting
74	USGS map servers
72	energy resources
70	ground water
61	mineral resources
61	floods
56	surface water (non-marine)
56	climate change
53	water quality
40	geospatial analysis
36	oil resources
36	droughts
35	avian influenza
34	contamination and pollution
32	invasive species
32	remote sensing
28	fires
22	streamflow
21	earthquake probabilities
20	environmental health (human)
19	stream-gage measurement
17	earth structure
17	erosion
15	ground-water flow
14	river systems
13	tectonic processes
12	seismology
11	ground-water quality
11	endangered species
11	water cycle
10	aquatic ecosystems
10	human impacts
10	USGS Quadrangles
9	acid deposition
9	hydrology
9	aerial photography

Science Topics term usage Tuesday, 2008-04-08