Science Topics term usage 2008-04-13

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.)

460	earthquakes
198	earthquake occurrences
126	volcanoes
84	maps and atlases
76	real-time monitoring and reporting
59	USGS map servers
55	ground water
52	energy resources
49	surface water (non-marine)
48	floods
43	mineral resources
42	climate change
38	droughts
36	water quality
35	contamination and pollution
33	geospatial analysis
29	invasive species
29	remote sensing
28	avian influenza
22	environmental health (human)
21	fires
15	river systems
14	erosion
12	Oregon
12	rocks and deposits
12	earth structure
11	oil resources
11	human impacts
10	sediment transport
9	global warming
9	earthquake probabilities
8	tsunamis
8	USGS budget
8	volcanic activity
8	hydrogeology
7	tectonic processes
7	global change
7	streamflow
6	stream discharge
6	Alaska

Science Topics term usage Sunday, 2008-04-13