Science Topics term usage 2011-06-23

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
280	earthquake occurrences
178	volcanoes
91	maps and atlases
86	real-time monitoring and reporting
76	floods
48	surface water (non-marine)
44	mineral resources
43	groundwater
38	energy resources
35	climate change
34	remote sensing
32	geospatial analysis
28	water quality
27	map interfaces
23	topographic maps
22	invasive species
17	environmental health (human)
17	fires
17	droughts
16	contamination and pollution
15	tsunamis
15	geologic maps
14	seismology
14	earthquake probabilities
12	oil resources
11	volcanic activity
11	microbiology
10	avian influenza
10	life sciences
10	river systems
8	vertebrate zoology
8	hydrology
7	sea-floor characteristics
7	human impacts
6	natural gas resources
6	earth structure
6	groundwater flow
6	land use and land cover
6	surface water quality

Science Topics term usage Thursday, 2011-06-23