Science Topics term usage 2012-02-20

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.)

545	earthquakes
188	earthquake occurrences
171	volcanoes
107	maps and atlases
70	mineral resources
59	real-time monitoring and reporting
55	map interfaces
54	climate change
44	energy resources
43	floods
41	groundwater
40	water quality
37	surface water (non-marine)
36	droughts
35	oil resources
32	topographic maps
32	geospatial analysis
30	remote sensing
24	contamination and pollution
20	invasive species
19	earthquake probabilities
17	human impacts
14	environmental health (human)
14	avian influenza
13	geologic maps
13	acid deposition
13	geographic information systems (GIS)
12	land use and land cover
12	offstream water use
11	seismology
11	water properties
10	hydrology
10	libraries and archives
10	volcanic activity
10	pesticide and herbicide contamination
9	tsunamis
9	fires
8	endangered species
8	microbiology
8	water chemistry

Science Topics term usage Monday, 2012-02-20