Science Topics term usage 2007-03-28

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.)

97	geographic information systems (GIS)
85	earthquakes
84	volcanoes
80	global warming
49	oceans
29	acid deposition
29	earthquake occurrences
24	earth structure
24	hazards
23	human impacts
23	tectonic processes
22	geologic history
22	tsunamis
22	ground-water flow
20	rocks and deposits
19	landslides
19	contamination and pollution
19	maps and atlases
19	climate change
18	ground water
17	water supply and demand
16	water quality
14	plants (organisms)
14	animals
14	remote sensing
13	mineral resources
13	marine geology
12	streamflow
12	nonvascular plants
11	hydrogeology
11	sediment transport
11	aerial photography
11	oil resources
11	hurricanes
11	magnetic field (earth)
11	topics
11	map coordinate systems
10	glaciation
10	cartography
10	geologic structure

Science Topics term usage Wednesday, 2007-03-28