Science Topics term usage 2007-08-23

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.)

138	earth structure
82	geographic information systems (GIS)
64	earthquakes
43	volcanoes
28	tectonic processes
22	vertebrates
18	earthquake occurrences
18	land use and land cover
17	core (earth)
17	ground water
16	hurricanes
16	acid deposition
14	stream-gage measurement
14	water quality
14	climate change
13	scientific careers
13	floods
12	mantle (earth)
12	mineral resources
12	tsunamis
12	rocks and deposits
12	contamination and pollution
11	geology
11	real-time monitoring and reporting
11	geologic processes
10	ground-water flow
10	animals
10	crust (earth)
10	cartography
9	land surface characteristics
9	gravitational field (earth)
9	hazards
9	aquatic ecosystems
9	fires
9	energy resources
9	surface water (non-marine)
9	geologic structure
9	remote sensing
8	landslides
8	endangered species

Science Topics term usage Thursday, 2007-08-23