Science Topics term usage 2006-05-01

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.)

249	earthquakes
181	volcanoes
75	geographic information systems (GIS)
64	tectonic processes
33	floods
32	earthquake occurrences
32	earth structure
32	storms
30	ground water
30	geologic history
29	tsunamis
28	surface water (non-marine)
27	energy resources
26	oil resources
26	streamflow
25	animals
22	nonvascular plants
22	aerial photography
22	coastal zones
22	acid deposition
21	contamination and pollution
21	erosion
21	climate change
20	health and disease
20	water quality
20	hazards
19	droughts
19	water supply and demand
18	maps and atlases
18	rocks and deposits
18	wildlife
17	water resources
17	landslides
16	land surface characteristics
16	magnetic field (earth)
15	tornadoes
15	fires
15	hurricanes
15	ground-water flow
15	earthquake probabilities

Science Topics term usage Monday, 2006-05-01