Science Topics term usage 2006-11-20

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.)

151	earthquakes
104	volcanoes
64	geographic information systems (GIS)
43	side-scan sonar methods
40	acid deposition
35	earthquake occurrences
32	earth structure
29	ground water
28	tectonic processes
24	human impacts
23	landslides
23	desert ecosystems
22	floods
20	tsunamis
18	water quality
18	contamination and pollution
18	climate change
18	geologic history
17	geologic structure
16	metadata development
16	energy resources
15	erosion
15	mineral resources
15	hurricanes
14	outer core (earth)
14	oil resources
14	remote sensing
14	endangered species
14	ground-water quality
14	snow and ice cover
13	surface water (non-marine)
13	sedimentation
12	crust (earth)
12	ground-water flow
12	water supply and demand
12	animals
12	hydrology
11	global warming
11	cartography
11	aerial photography

Science Topics term usage Monday, 2006-11-20