Science Topics term usage 2009-12-20

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.)

783	earthquakes
395	volcanoes
345	earthquake occurrences
128	maps and atlases
116	real-time monitoring and reporting
110	mineral resources
103	contamination and pollution
87	surface water (non-marine)
85	climate change
77	ground water
74	energy resources
63	water quality
59	floods
58	map interfaces
56	remote sensing
55	invasive species
54	geospatial analysis
50	droughts
46	topographic maps
39	avian influenza
34	volcanic activity
31	cartography
28	environmental health (human)
28	earthquake probabilities
26	fires
24	global warming
24	geologic maps
22	tectonic processes
21	seismology
20	earth structure
18	human impacts
18	plants (organisms)
17	acid deposition
15	natural resource management
15	ground-water flow
14	magnetic field (earth)
13	mineralogy
13	water supply and demand
13	nonpoint-source pollution
13	forest ecosystems

Science Topics term usage Sunday, 2009-12-20