Science Topics term usage 2009-03-24

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.)

999	earthquakes
668	volcanoes
487	earthquake occurrences
142	maps and atlases
123	floods
95	real-time monitoring and reporting
76	USGS map servers
66	mineral resources
60	climate change
55	topographic maps
55	energy resources
54	avian influenza
47	water quality
45	ground water
42	remote sensing
42	geospatial analysis
40	contamination and pollution
40	droughts
39	surface water (non-marine)
32	seismology
28	environmental health (human)
27	fires
27	invasive species
26	earthquake probabilities
22	volcanic activity
22	land use and land cover
19	datasets
19	oil resources
17	river systems
17	health and disease
16	plants (organisms)
16	geologic maps
16	acid deposition
16	human impacts
15	rocks and deposits
15	surface water quality
15	animals
13	cartography
13	endangered species
13	California

Science Topics term usage Tuesday, 2009-03-24