Science Topics term usage 2009-05-13

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.)

682	earthquakes
348	earthquake occurrences
154	volcanoes
113	maps and atlases
80	real-time monitoring and reporting
62	USGS map servers
57	climate change
51	floods
46	energy resources
44	water quality
44	ground water
42	geospatial analysis
42	topographic maps
40	contamination and pollution
35	invasive species
34	avian influenza
33	remote sensing
33	surface water (non-marine)
30	mineral resources
25	droughts
23	seismology
23	environmental health (human)
23	fires
22	human impacts
17	acid deposition
17	oil resources
16	health and disease
14	desert ecosystems
13	animals
12	land use and land cover
12	earthquake probabilities
11	ground-water flow
9	earth structure
9	USGS budget
9	volcanic activity
9	USGS maps on demand
9	drainage basins
9	California
9	endangered species
8	geologic maps

Science Topics term usage Wednesday, 2009-05-13