Science Topics term usage 2007-01-07

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.)

61	geographic information systems (GIS)
47	earthquakes
38	volcanoes
28	marine water quality
19	tectonic features
18	tsunamis
17	aerial photography
14	earth structure
13	rocks and deposits
13	tectonic processes
13	industrial pollution
13	climate change
12	earthquake occurrences
11	animals
11	geospatial datasets
10	topography
10	endangered species
10	planetary bodies
10	acid deposition
10	river systems
10	streamflow
10	mineral resources
10	outer core (earth)
10	ground water
10	water properties
10	global change
9	erosion
9	global warming
9	impact cratering
9	human impacts
9	magnetic field (earth)
8	meteorites
8	hurricanes
8	health and disease
8	hydrology
7	vertebrates
7	ground-water flow
7	hazards
7	sedimentation
7	energy resources

Science Topics term usage Sunday, 2007-01-07