Science Topics term usage 2008-03-26

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.)

406	earthquakes
243	volcanoes
179	earthquake occurrences
115	maps and atlases
76	real-time monitoring and reporting
66	floods
66	climate change
52	USGS map servers
51	mineral resources
48	geospatial analysis
47	ground water
45	droughts
44	contamination and pollution
41	water quality
40	surface water (non-marine)
39	energy resources
30	invasive species
24	avian influenza
22	fires
21	acid deposition
21	remote sensing
21	environmental health (human)
19	land use and land cover
17	volcanic activity
15	river systems
14	surface water quality
13	earthquake probabilities
12	erosion
12	earth structure
12	seismology
11	water resources
11	drainage basins
11	aerial photography
10	hazards
10	rocks and deposits
10	tsunamis
10	nutrient content (water)
9	human impacts
9	sediment transport
9	water chemistry

Science Topics term usage Wednesday, 2008-03-26