Science Topics term usage 2006-12-02

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.)

50	volcanoes
44	earthquakes
41	geographic information systems (GIS)
40	oxygen content (water)
16	earthquake occurrences
14	sea-floor characteristics
13	maps and atlases
12	streamflow
12	rocks and deposits
12	climate change
11	vertebrate paleontology
11	water quality
10	geologic structure
9	mineral resources
9	acid deposition
9	gravitational field (earth)
8	tectonic processes
8	animals
8	tsunamis
8	geochemistry
8	floods
7	topography
7	map coordinate systems
7	surface water (non-marine)
7	ocean characteristics
6	water temperature
6	ocean temperature
6	eutrophication
6	fires
6	earth structure
6	contamination and pollution
6	hydrology
6	sediment transport
6	erosion
6	river systems
6	soil chemistry
6	Alaska
6	outer core (earth)
6	human impacts
5	geologic history

Science Topics term usage Saturday, 2006-12-02