Science Topics term usage 2007-09-27

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.)

86	geographic information systems (GIS)
60	earthquakes
60	volcanoes
40	wetlands
29	earthquake occurrences
24	tectonic processes
23	acid deposition
23	earth structure
20	climate change
17	hurricanes
17	human impacts
17	energy resources
17	sediment transport
16	desert ecosystems
15	rocks and deposits
14	erosion
14	ocean characteristics
14	geologic structure
13	land use and land cover
13	global warming
13	stream-gage measurement
12	water quality
12	scientific careers
11	map coordinate systems
11	contamination and pollution
10	water use
10	tsunamis
10	USGS maps on demand
10	streamflow
10	ground-water flow
10	global change
10	producers (organisms)
10	toxic trace element contamination
10	social sciences
9	aerial photography
9	mineral resources
9	ground water
8	paleobotany
8	oil resources
8	health and disease

Science Topics term usage Thursday, 2007-09-27