Science Topics term usage 2008-02-17

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.)

32	geographic information systems (GIS)
31	earthquakes
19	palynology
16	freshwater ecosystems
15	earthquake occurrences
15	real-time monitoring and reporting
14	floods
13	greenhouse gases
13	acid deposition
11	climate change
11	volcanoes
10	desert ecosystems
10	planetary sciences
9	land surface characteristics
9	stream-gage measurement
9	erosion
9	contamination and pollution
9	earth structure
9	volcanic eruption prediction
9	animals
8	water supply and demand
8	human impacts
8	geologic history
8	maps and atlases
8	tectonic processes
8	rocks and deposits
8	ocean characteristics
7	aquatic ecosystems
7	river systems
7	aerial photography
7	bathymetry
7	snow and ice cover
7	geochemistry
7	soil chemistry
6	sedimentation
6	coal resources
6	microwave imaging
6	tsunamis
6	earth history
6	ocean-atmosphere interaction

Science Topics term usage Sunday, 2008-02-17