Science Topics term usage 2009-02-26

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.)

522	earthquakes
370	volcanoes
223	earthquake occurrences
154	maps and atlases
81	climate change
75	USGS map servers
69	real-time monitoring and reporting
64	energy resources
59	floods
56	mineral resources
52	topographic maps
48	water quality
44	contamination and pollution
44	ground water
38	surface water (non-marine)
38	droughts
37	geospatial analysis
36	avian influenza
35	invasive species
35	remote sensing
30	geologic maps
23	environmental health (human)
23	earthquake probabilities
22	fires
20	acid deposition
19	offstream water use
18	oil resources
18	health and disease
18	surface water quality
17	seismology
17	volcanic activity
16	river systems
15	human impacts
14	animals
13	coal resources
13	desert ecosystems
13	producers (organisms)
13	social sciences
12	endangered species
12	vertebrates

Science Topics term usage Thursday, 2009-02-26