Science Topics term usage 2006-12-12

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.)

127	earthquakes
102	geographic information systems (GIS)
101	volcanoes
62	human impacts
51	earthquake occurrences
35	tectonic processes
28	geolocation measurement
27	acid deposition
27	earth structure
21	desert ecosystems
20	ground water
20	energy resources
17	tsunamis
17	geologic history
17	oil resources
16	ecosystems
16	mineral resources
15	health and disease
15	land use and land cover
15	erosion
15	fires
15	hurricanes
15	rocks and deposits
14	floods
14	ground-water flow
14	global warming
13	endangered species
13	map coordinate systems
13	contamination and pollution
13	climate change
11	land use change
11	glaciation
11	water quality
11	streams
11	earthquake probabilities
11	geography
11	volcanic activity
10	landslides
10	aerial photography
10	global change

Science Topics term usage Tuesday, 2006-12-12