Science Topics term usage 2009-03-09

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.)

626	earthquakes
292	earthquake occurrences
257	volcanoes
140	maps and atlases
102	real-time monitoring and reporting
101	floods
84	USGS map servers
84	water quality
77	climate change
71	energy resources
63	ground water
62	surface water (non-marine)
58	droughts
58	mineral resources
54	remote sensing
51	contamination and pollution
48	geospatial analysis
40	topographic maps
38	avian influenza
38	invasive species
32	geologic maps
29	environmental health (human)
27	fires
22	oil resources
18	human impacts
18	animals
18	acid deposition
18	hydrology
17	seismology
16	earth structure
16	ground-water quality
16	volcanic activity
15	social sciences
15	river systems
14	erosion
14	health and disease
13	aquatic ecosystems
13	natural gas resources
13	meteorites
13	earthquake probabilities

Science Topics term usage Monday, 2009-03-09