Science Topics term usage 2009-02-23

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.)

514	earthquakes
263	volcanoes
206	earthquake occurrences
149	maps and atlases
77	real-time monitoring and reporting
72	USGS map servers
65	energy resources
62	climate change
60	floods
56	ground water
55	mineral resources
53	topographic maps
52	water quality
50	surface water (non-marine)
44	remote sensing
43	geospatial analysis
39	contamination and pollution
32	droughts
29	geologic maps
27	environmental health (human)
26	avian influenza
25	earthquake probabilities
25	invasive species
20	oil resources
19	health and disease
19	acid deposition
18	river systems
17	seismology
17	copper
16	tsunamis
15	hydrology
15	surface water quality
14	fires
14	earth structure
13	animals
13	human impacts
12	producers (organisms)
12	streamflow
12	hazards
12	global warming

Science Topics term usage Monday, 2009-02-23