Science Topics term usage 2006-03-20

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.)

169	earthquakes
148	volcanoes
69	geographic information systems (GIS)
40	ground water
39	maps and atlases
35	tectonic processes
33	earth structure
32	earthquake occurrences
31	tsunamis
28	aerial photography
27	climate change
26	animals
25	landslides
25	streamflow
25	geologic history
24	mineral resources
23	rocks and deposits
22	ground-water flow
22	energy resources
21	geologic structure
20	acid deposition
20	hazards
20	surface water (non-marine)
19	fires
18	habitats
18	human impacts
18	floods
18	health and disease
17	magnetic field (earth)
16	igneous rocks
16	outer core (earth)
15	planetary bodies
15	endangered species
15	geochemistry
15	storms
14	earth history
14	erosion
14	birds
14	water quality
14	marine geology

Science Topics term usage Monday, 2006-03-20