Science Topics term usage 2006-10-22

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.)

72	volcanoes
58	earthquakes
29	geographic information systems (GIS)
22	earthquake occurrences
20	agricultural sites
19	metamorphic rocks
18	tectonic processes
14	earth structure
13	erosion
12	desert ecosystems
12	tsunamis
11	geologic structure
10	health and disease
10	river systems
9	geologic history
8	global change
8	magnetic field (earth)
8	seismology
8	acid deposition
7	industrial pollution
7	rocks and deposits
7	oil resources
7	climate change
7	ocean characteristics
7	water quality
6	hurricanes
6	crust (earth)
6	droughts
6	aeroradiometric surveying
6	energy resources
6	human impacts
6	sea-floor characteristics
6	core (earth)
6	marine geology
6	volcanic features
6	contamination and pollution
5	animals
5	landslides
5	nonvascular plants
5	natural gas resources

Science Topics term usage Sunday, 2006-10-22