Science Topics term usage 2011-04-17

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.)

900	earthquakes
271	earthquake occurrences
226	volcanoes
78	maps and atlases
74	real-time monitoring and reporting
59	floods
54	surface water (non-marine)
40	groundwater
35	climate change
31	mineral resources
30	earthquake probabilities
28	energy resources
26	map interfaces
23	water quality
23	topographic maps
22	invasive species
22	remote sensing
19	geospatial analysis
18	tsunamis
17	fires
16	droughts
13	seismology
13	avian influenza
13	river systems
12	contamination and pollution
12	environmental health (human)
12	oil resources
11	volcanic activity
11	geologic maps
10	microbiology
9	tectonic processes
8	ocean characteristics
7	human impacts
7	organism growth and development
7	tornadoes
6	geophysics
6	stream-gage measurement
5	magnetic field (earth)
5	land surface characteristics
5	groundwater quality

Science Topics term usage Sunday, 2011-04-17