Science Topics term usage 2011-04-21

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.)

1188	earthquakes
388	earthquake occurrences
209	volcanoes
117	maps and atlases
88	real-time monitoring and reporting
62	surface water (non-marine)
58	groundwater
53	climate change
52	mineral resources
49	floods
45	earthquake probabilities
43	energy resources
33	geospatial analysis
33	tsunamis
32	map interfaces
28	remote sensing
28	water quality
24	topographic maps
22	invasive species
18	fires
18	avian influenza
18	contamination and pollution
17	droughts
16	human impacts
16	geologic maps
15	seismology
15	oil resources
13	environmental health (human)
10	natural gas resources
10	land use and land cover
9	tectonic processes
9	groundwater flow
8	hydrology
7	streamflow
7	hazards
7	sea-level change
7	magnetic field (earth)
7	stream discharge
7	health and disease
7	surface water quality

Science Topics term usage Thursday, 2011-04-21