Science Topics term usage 2006-02-21

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.)

200	earthquakes
173	volcanoes
71	geographic information systems (GIS)
70	earthquake occurrences
44	tectonic processes
35	energy resources
33	health and disease
28	mineral resources
28	earth structure
27	geologic history
27	ground water
25	earthquake probabilities
25	human impacts
25	acid deposition
25	climate change
24	hazards
23	tsunamis
23	surface water (non-marine)
23	streamflow
23	landslides
22	animals
22	invasive species
22	maps and atlases
21	water quality
21	real-time monitoring and reporting
20	water supply and demand
20	rocks and deposits
18	remote sensing
18	aerial photography
17	floods
17	magnetic field (earth)
16	oil resources
16	erosion
16	wildlife
16	precipitation (atmospheric)
15	ecosystems
15	storms
15	endangered species
14	meteorites
14	igneous rocks

Science Topics term usage Tuesday, 2006-02-21