Science Topics term usage 2009-04-18

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.)

297	earthquakes
123	volcanoes
112	earthquake occurrences
77	maps and atlases
58	real-time monitoring and reporting
42	climate change
37	USGS map servers
35	energy resources
35	water quality
31	mineral resources
31	ground water
30	floods
28	topographic maps
27	surface water (non-marine)
22	geospatial analysis
20	remote sensing
20	contamination and pollution
17	avian influenza
16	seismology
15	droughts
14	invasive species
14	geologic maps
13	fires
13	environmental health (human)
12	river systems
10	earthquake probabilities
9	tectonic processes
8	nonmetallic mineral resources
8	land use and land cover
7	earth structure
7	volcanic activity
7	magnetic field (earth)
7	surface water quality
7	endangered species
6	stream discharge
6	rocks and deposits
6	streamflow
6	acid deposition
6	freshwater ecosystems
6	oil resources

Science Topics term usage Saturday, 2009-04-18