Science Topics term usage 2006-11-18

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.)

70	hydrogeology
50	earthquakes
39	volcanoes
30	floods
29	geographic information systems (GIS)
21	earthquake occurrences
19	geologic structure
17	tectonic processes
15	earth structure
14	ground water
14	hydrology
13	remote sensing
13	geologic history
13	ground-water flow
13	water resources
13	desert ecosystems
12	water quality
12	acid deposition
12	human impacts
12	animals
11	mineral resources
11	topography
10	endangered species
10	surface water (non-marine)
10	vertebrates
10	climate change
9	core (earth)
9	oil resources
9	erosion
9	hurricanes
9	water properties
9	land surface characteristics
9	aerial photography
9	invasive species
9	tsunamis
8	contamination and pollution
8	landslides
8	energy resources
8	sedimentation
8	streamflow

Science Topics term usage Saturday, 2006-11-18