Science Topics term usage 2008-05-20

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.)

1712	earthquakes
708	earthquake occurrences
212	volcanoes
170	maps and atlases
154	real-time monitoring and reporting
124	earthquake probabilities
95	USGS map servers
78	water quality
74	mineral resources
74	energy resources
69	floods
64	climate change
61	surface water (non-marine)
58	ground water
56	avian influenza
53	geospatial analysis
45	remote sensing
44	droughts
41	contamination and pollution
41	invasive species
34	oil resources
33	streamflow
31	fires
23	seismology
20	human impacts
19	tectonic processes
19	environmental health (human)
19	hazards
19	acid deposition
16	ground-water quality
16	desert ecosystems
15	river systems
15	USGS Quadrangles
15	aquatic ecosystems
14	water chemistry
14	global warming
14	surface water quality
13	earth structure
13	land use and land cover
13	natural gas resources

Science Topics term usage Tuesday, 2008-05-20