Science Topics term usage 2008-04-11

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.)

300	earthquakes
154	volcanoes
137	maps and atlases
127	earthquake occurrences
98	energy resources
88	real-time monitoring and reporting
78	USGS map servers
76	floods
54	surface water (non-marine)
48	climate change
45	ground water
43	oil resources
42	contamination and pollution
39	mineral resources
38	geospatial analysis
38	water quality
37	remote sensing
28	avian influenza
27	droughts
26	invasive species
23	fires
19	environmental health (human)
19	seismology
17	river systems
17	earthquake probabilities
16	acid deposition
15	global warming
15	erosion
15	USGS Quadrangles
15	human impacts
14	volcanic activity
14	water supply and demand
13	natural gas resources
12	streamflow
11	aquatic ecosystems
11	earth structure
11	marine geology
10	aerial photography
10	health and disease
10	ground-water quality

Science Topics term usage Friday, 2008-04-11