Science Topics term usage 2008-04-21

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.)

4543	earthquakes
2511	earthquake occurrences
293	volcanoes
264	real-time monitoring and reporting
246	maps and atlases
234	earthquake probabilities
167	seismology
139	USGS map servers
114	climate change
111	floods
102	avian influenza
98	energy resources
95	water quality
79	ground water
75	invasive species
74	droughts
70	surface water (non-marine)
70	mineral resources
66	geospatial analysis
53	remote sensing
53	contamination and pollution
40	oil resources
36	fires
36	environmental health (human)
31	tectonic processes
31	acid deposition
23	volcanic activity
21	hazards
20	natural gas resources
20	global warming
19	stream-gage measurement
19	field methods
17	plants (organisms)
17	river systems
16	human impacts
16	surface water quality
16	USGS maps on demand
15	hydrology
15	cartography
14	aquatic ecosystems

Science Topics term usage Monday, 2008-04-21