Science Topics term usage 2011-04-28

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.)

824	earthquakes
292	volcanoes
257	earthquake occurrences
159	real-time monitoring and reporting
125	floods
107	maps and atlases
59	mineral resources
59	surface water (non-marine)
52	groundwater
51	map interfaces
48	climate change
44	water quality
40	energy resources
39	geospatial analysis
36	remote sensing
36	earthquake probabilities
35	contamination and pollution
31	topographic maps
30	invasive species
26	oil resources
21	droughts
21	tornadoes
20	fires
19	river systems
19	geologic maps
18	avian influenza
17	hydrology
17	environmental health (human)
17	volcanic activity
17	human impacts
17	tsunamis
13	land use and land cover
13	microbiology
13	tectonic processes
12	surface water quality
12	acid deposition
12	streamflow
12	health and disease
12	seismology
11	natural gas resources

Science Topics term usage Thursday, 2011-04-28