Science Topics term usage 2009-01-30

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.)

1461	earthquakes
884	volcanoes
747	earthquake occurrences
172	maps and atlases
120	real-time monitoring and reporting
86	climate change
83	USGS map servers
70	water quality
66	topographic maps
64	ground water
55	surface water (non-marine)
55	remote sensing
54	avian influenza
54	contamination and pollution
52	floods
49	droughts
49	mineral resources
46	invasive species
45	energy resources
45	geospatial analysis
42	seismology
34	volcanic activity
34	Washington
33	geologic maps
31	earthquake probabilities
26	environmental health (human)
23	fires
21	health and disease
21	animals
21	global warming
19	human impacts
18	acid deposition
17	aquatic ecosystems
16	rocks and deposits
16	surface water quality
16	oil resources
15	ground-water quality
15	erosion
14	land use and land cover
14	earth structure

Science Topics term usage Friday, 2009-01-30