Science Topics term usage 2009-03-20

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.)

607	volcanoes
523	earthquakes
224	earthquake occurrences
96	maps and atlases
87	real-time monitoring and reporting
68	USGS map servers
62	climate change
59	energy resources
47	floods
45	water quality
42	droughts
40	contamination and pollution
40	ground water
40	mineral resources
37	avian influenza
37	topographic maps
37	surface water (non-marine)
32	geospatial analysis
32	invasive species
31	remote sensing
27	environmental health (human)
21	health and disease
18	fires
17	geologic maps
16	volcanic activity
16	animals
16	oil resources
14	surface water quality
12	river systems
12	human impacts
10	copper
10	volcanic features
10	earthquake probabilities
9	USGS maps on demand
9	endangered species
9	tsunamis
8	stream-gage measurement
8	rocks and deposits
8	acid deposition
8	ground-water quality

Science Topics term usage Friday, 2009-03-20