Science Topics term usage 2009-04-17

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.)

598	earthquakes
258	earthquake occurrences
198	volcanoes
122	maps and atlases
85	real-time monitoring and reporting
61	floods
59	mineral resources
51	USGS map servers
48	water quality
47	ground water
45	topographic maps
42	energy resources
41	remote sensing
41	climate change
39	surface water (non-marine)
38	droughts
37	contamination and pollution
27	avian influenza
27	geospatial analysis
26	invasive species
23	geologic maps
20	earthquake probabilities
19	environmental health (human)
18	fires
15	seismology
15	oil resources
13	sediment transport
13	river systems
13	tectonic processes
12	health and disease
12	global warming
11	tsunamis
10	acid deposition
9	ocean characteristics
9	wetland ecosystems
9	topography
9	human impacts
9	ground-water flow
9	volcanic activity
9	drainage basins

Science Topics term usage Friday, 2009-04-17