Science Topics term usage 2007-12-10

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.)

54	earthquakes
47	geographic information systems (GIS)
44	sedimentation
42	volcanoes
24	earth structure
23	earthquake occurrences
23	acid deposition
17	erosion
14	oxygen content (water)
14	climate change
13	geologic history
12	tsunamis
12	human impacts
11	aerial photography
10	health and disease
10	streamflow
9	ground-water flow
9	hurricanes
9	rocks and deposits
9	geospatial datasets
9	scientific careers
9	stream-gage measurement
9	contamination and pollution
8	precipitation (atmospheric)
8	snow and ice cover
8	water quality
8	energy resources
8	desert ecosystems
8	water sampling
8	coastal zones
8	earthquake probabilities
8	water cycle
8	tectonic processes
8	drainage basins
7	plants (organisms)
7	ground water
7	greenhouse effect
7	ocean characteristics
7	land use and land cover
7	outer core (earth)

Science Topics term usage Monday, 2007-12-10