Science Topics term usage 2009-07-01

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.)

537	earthquakes
247	earthquake occurrences
138	volcanoes
119	maps and atlases
88	real-time monitoring and reporting
63	USGS map servers
51	mineral resources
50	climate change
49	topographic maps
49	energy resources
43	ground water
42	water quality
37	surface water (non-marine)
34	floods
33	geospatial analysis
30	contamination and pollution
29	remote sensing
28	invasive species
27	geologic maps
23	avian influenza
23	droughts
22	earthquake probabilities
17	environmental health (human)
14	fires
11	global warming
10	health and disease
10	geographic information systems (GIS)
10	soil resources
9	earth structure
9	erosion
9	seismology
8	geologic history
8	coal resources
8	hazards
8	river systems
8	land use and land cover
8	streamflow
7	marine geology
7	glaciation
7	acid deposition

Science Topics term usage Wednesday, 2009-07-01