Science Topics term usage 2007-10-29

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.)

62	geographic information systems (GIS)
56	earthquakes
41	volcanoes
36	long-term ecological monitoring
24	droughts
20	earthquake occurrences
20	acid deposition
18	ground water
17	earth structure
17	climate change
16	human impacts
16	tsunamis
15	global warming
14	tectonic processes
13	erosion
12	rocks and deposits
12	health and disease
11	impact cratering
11	water supply and demand
11	magnetic field (earth)
11	fires
11	topography
11	oil resources
10	sediment transport
10	water use
10	drainage basins
10	streamflow
10	endangered species
9	floods
9	geologic history
9	planetary bodies
9	water quality
9	landslides
9	energy resources
9	river systems
9	plants (organisms)
9	producers (organisms)
9	land use and land cover
8	global change
8	gravitational field (earth)

Science Topics term usage Monday, 2007-10-29