Science Topics term usage 2009-12-17

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.)

1603	earthquakes
848	earthquake occurrences
428	volcanoes
157	maps and atlases
131	real-time monitoring and reporting
119	mineral resources
95	climate change
88	earthquake probabilities
80	water quality
79	ground water
79	energy resources
75	remote sensing
75	floods
68	map interfaces
63	seismology
62	surface water (non-marine)
62	geospatial analysis
52	contamination and pollution
51	droughts
46	geologic maps
43	invasive species
38	avian influenza
37	topographic maps
36	volcanic activity
32	oil resources
32	fires
29	environmental health (human)
28	human impacts
28	acid deposition
26	animals
26	ground-water quality
24	topics
23	land use and land cover
23	tectonic processes
22	earth structure
22	surface water quality
19	river systems
19	metallic ores
18	ground-water flow
17	gravitational field (earth)

Science Topics term usage Thursday, 2009-12-17