Science Topics term usage 2006-02-27

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.)

268	volcanoes
232	earthquakes
78	geographic information systems (GIS)
56	earthquake occurrences
43	earth structure
40	energy resources
39	tectonic processes
38	animals
35	tsunamis
31	mineral resources
31	landslides
31	water quality
30	surface water (non-marine)
29	floods
29	climate change
29	geologic history
28	streamflow
27	ground water
26	stream-gage measurement
25	rocks and deposits
22	acid deposition
21	aerial photography
21	plants (organisms)
21	ground-water flow
21	maps and atlases
21	global change
19	glaciation
19	sedimentation
19	endangered species
19	earthquake probabilities
18	ecosystems
18	land surface characteristics
17	water supply and demand
17	erosion
17	hazards
17	human impacts
17	geologic structure
17	remote sensing
16	geologic processes
16	water resources

Science Topics term usage Monday, 2006-02-27