Science Topics term usage 2006-03-16

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.)

300	earthquakes
149	volcanoes
61	earthquake occurrences
60	rocks and deposits
59	geographic information systems (GIS)
56	energy resources
54	tectonic processes
44	earth structure
35	mineral resources
33	hazards
33	floods
32	volcanic activity
29	water quality
29	tsunamis
28	streamflow
26	surface water (non-marine)
26	geologic history
24	remote sensing
24	ecosystems
24	climate change
23	erosion
23	animals
23	igneous rocks
23	ground water
23	maps and atlases
23	landslides
22	endangered species
21	ground-water flow
21	gravitational field (earth)
21	acid deposition
20	geophysics
20	health and disease
20	water supply and demand
20	aerial photography
20	geologic structure
20	human impacts
19	contamination and pollution
19	earthquake probabilities
18	biological and physical processes
18	water properties

Science Topics term usage Thursday, 2006-03-16