Science Topics term usage 2011-04-24

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.)

653	earthquakes
223	earthquake occurrences
129	volcanoes
96	real-time monitoring and reporting
78	maps and atlases
67	floods
44	groundwater
43	surface water (non-marine)
33	mineral resources
30	geospatial analysis
30	climate change
26	energy resources
25	map interfaces
23	remote sensing
23	topographic maps
22	water quality
21	earthquake probabilities
19	avian influenza
18	droughts
17	stream-gage measurement
16	geography
16	contamination and pollution
15	invasive species
14	tsunamis
12	fires
11	geologic maps
11	volcanic activity
11	groundwater flow
10	hydrology
10	environmental health (human)
9	human impacts
9	land use and land cover
9	river systems
8	streamflow
8	water resources
8	seismology
7	surface-water level
7	microbiology
6	stream discharge
6	surface water quality

Science Topics term usage Sunday, 2011-04-24