Science Topics term usage 2007-03-29

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.)

156	hydrogeology
111	geographic information systems (GIS)
89	volcanoes
85	earthquakes
38	ground-water flow
37	global warming
35	hydrology
29	human impacts
27	acid deposition
24	earthquake occurrences
24	ground water
23	earth structure
23	sediment transport
21	water resources
20	floods
19	rocks and deposits
19	climate change
17	geologic history
17	geologic processes
16	real-time monitoring and reporting
16	energy resources
16	mining hazards
16	tectonic processes
15	geologic structure
15	industrial pollution
15	erosion
15	biological and physical processes
15	streamflow
14	oil resources
14	endangered species
13	health and disease
13	aerial photography
13	contamination and pollution
12	land use and land cover
12	map coordinate systems
12	hurricanes
12	geology
12	tsunamis
12	seismology
11	hazards

Science Topics term usage Thursday, 2007-03-29