Science Topics term usage 2009-04-21

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.)

601	earthquakes
267	earthquake occurrences
204	volcanoes
139	maps and atlases
94	real-time monitoring and reporting
66	USGS map servers
63	climate change
62	mineral resources
58	energy resources
57	floods
55	water quality
52	ground water
44	topographic maps
44	contamination and pollution
43	surface water (non-marine)
41	invasive species
39	remote sensing
38	geospatial analysis
36	droughts
35	avian influenza
27	human impacts
27	environmental health (human)
26	river systems
25	geologic maps
24	oil resources
23	fires
21	health and disease
18	ground-water flow
18	earthquake probabilities
17	stream discharge
16	seismology
15	animals
15	acid deposition
15	tectonic processes
14	global warming
14	sediment transport
14	desert ecosystems
13	zoology
12	volcanic activity
12	hydrology

Science Topics term usage Tuesday, 2009-04-21