Science Topics term usage 2006-05-11

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.)

171	earthquakes
118	volcanoes
61	geographic information systems (GIS)
43	tectonic processes
34	earthquake occurrences
34	tsunamis
34	animals
29	energy resources
29	ground water
28	streamflow
27	glaciation
26	floods
26	mineral resources
25	surface water (non-marine)
23	land use and land cover
22	geologic history
21	maps and atlases
21	endangered species
21	landslides
20	snow and ice cover
20	earth structure
18	aerial photography
18	oil resources
17	ground-water flow
17	coastal zones
17	hazards
17	rocks and deposits
17	earthquake probabilities
17	water quality
16	stream-gage measurement
16	nonvascular plants
15	storms
15	mining hazards
15	water resources
14	vertebrates
14	image collections
14	plants (organisms)
14	magnetic field (earth)
13	remote sensing
13	contamination and pollution

Science Topics term usage Thursday, 2006-05-11