Science Topics term usage 2006-11-28

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.)

135	earthquakes
121	volcanoes
71	geographic information systems (GIS)
61	earthquake occurrences
38	rubidium-strontium analysis
26	earth structure
25	vegetation
25	tsunamis
24	human impacts
23	floods
23	acid deposition
21	water quality
19	energy resources
18	land use and land cover
18	geologic history
18	mineral resources
18	tectonic processes
17	geologic structure
16	earthquake probabilities
16	hurricanes
16	oil resources
16	plants (organisms)
16	climate change
16	aerial photography
15	contamination and pollution
15	coastal zones
14	erosion
14	streamflow
14	seismology
13	topics
13	ground water
12	surface water (non-marine)
12	global warming
12	maps and atlases
12	glaciation
12	landslides
11	animals
11	magnetic field (earth)
11	sediment transport
11	ground-water flow

Science Topics term usage Tuesday, 2006-11-28