Science Topics term usage 2007-03-01

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.)

107	geographic information systems (GIS)
103	volcanoes
103	earthquakes
39	ecological research sites
35	acid deposition
30	earth structure
26	energy resources
24	climate change
24	streamflow
23	ground water
20	landslides
19	tsunamis
19	water quality
18	contamination and pollution
17	mineral resources
17	tectonic processes
16	ground-water flow
16	earthquake occurrences
16	global change
15	snow and ice cover
15	maps and atlases
15	animals
15	hurricanes
14	human impacts
14	global warming
14	oil resources
13	erosion
11	cartography
11	geologic history
11	rocks and deposits
11	stream-gage measurement
11	aerial photography
11	impact cratering
11	coal resources
10	wildlife
10	planetary bodies
10	floods
10	land use and land cover
10	magnetic field (earth)
10	lakes

Science Topics term usage Thursday, 2007-03-01