Science Topics term usage 2006-04-10

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.)

224	stratigraphic sections
152	earthquakes
100	volcanoes
87	geographic information systems (GIS)
84	surficial geologic units
67	acid deposition
39	geologic history
39	earthquake occurrences
34	ground water
33	energy resources
27	tectonic processes
26	landslides
26	water quality
25	human impacts
25	animals
24	contamination and pollution
24	streamflow
22	tsunamis
21	magnetic field (earth)
21	climate change
21	geography
20	surface water (non-marine)
20	rocks and deposits
20	mineral resources
20	land surface characteristics
19	vertebrates
19	ground-water flow
19	earth structure
18	coastal zones
18	oil resources
16	mining hazards
16	health and disease
15	floods
14	lithostratigraphy
14	natural resource extraction
14	chemical analysis
14	geochemistry
14	geologic structure
13	aerial photography
13	droughts

Science Topics term usage Monday, 2006-04-10