Science Topics term usage 2009-12-22

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.)

820	earthquakes
597	volcanoes
324	earthquake occurrences
170	maps and atlases
113	real-time monitoring and reporting
85	climate change
85	mineral resources
78	energy resources
75	map interfaces
75	ground water
72	remote sensing
72	contamination and pollution
70	surface water (non-marine)
65	water quality
61	topographic maps
52	floods
49	droughts
49	invasive species
46	geospatial analysis
45	earthquake probabilities
41	seismology
37	volcanic activity
37	avian influenza
31	geologic maps
26	river systems
25	mathematical modeling
24	environmental health (human)
23	oil resources
20	global warming
20	volcanic eruption prediction
20	streamflow
20	fires
19	planetary bodies
19	earth structure
18	natural gas resources
17	hazards
17	hydrology
16	acid deposition
16	stream discharge
14	water resources

Science Topics term usage Tuesday, 2009-12-22