Science Topics term usage 2009-04-01

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.)

578	earthquakes
370	volcanoes
235	earthquake occurrences
119	maps and atlases
85	real-time monitoring and reporting
66	floods
66	climate change
63	ground water
57	USGS map servers
52	energy resources
49	geospatial analysis
46	mineral resources
45	topographic maps
43	contamination and pollution
43	water quality
39	surface water (non-marine)
37	droughts
35	remote sensing
30	invasive species
27	avian influenza
25	animals
25	environmental health (human)
22	fires
21	geologic maps
20	health and disease
17	endangered species
16	acid deposition
14	global warming
14	land use and land cover
14	human impacts
13	earthquake probabilities
13	oil resources
13	seismology
12	river systems
11	global change
11	sediment transport
11	coal resources
10	California
10	earth structure
10	pharmaceutical contamination

Science Topics term usage Wednesday, 2009-04-01