Science Topics term usage 2008-03-19

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.)

384	earthquakes
167	volcanoes
165	earthquake occurrences
126	real-time monitoring and reporting
106	maps and atlases
80	surface water (non-marine)
75	USGS map servers
53	water quality
53	mineral resources
51	ground water
49	geospatial analysis
49	climate change
42	invasive species
41	avian influenza
39	remote sensing
38	energy resources
36	contamination and pollution
31	environmental health (human)
29	river systems
28	fires
18	floods
18	human impacts
18	streamflow
16	acid deposition
15	endangered species
14	earthquake probabilities
14	stream-gage measurement
14	land use and land cover
14	droughts
13	global warming
13	tectonic processes
12	desert ecosystems
11	plants (organisms)
11	topography
11	natural gas resources
10	erosion
10	ground-water flow
10	surface-water level
10	volcanic activity
9	tsunamis

Science Topics term usage Wednesday, 2008-03-19