Science Topics term usage 2005-09-29

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.)

169	earthquakes
99	volcanoes
97	geographic information systems (GIS)
68	acid deposition
54	earthquake occurrences
54	earth structure
53	climate change
43	precipitation (atmospheric)
43	streamflow
41	global change
40	ground-water flow
40	surface water (non-marine)
39	sediment transport
37	maps and atlases
36	geologic structure
35	mineral resources
32	floods
32	glaciation
31	tectonic processes
31	rocks and deposits
30	energy resources
28	animals
28	freshwater ecosystems
27	runoff
27	seismology
26	oil resources
25	nonvascular plants
24	human impacts
24	hazards
24	remote sensing
24	magnetic field (earth)
23	outer core (earth)
23	aquatic ecosystems
22	geography
21	invasive species
21	aerial photography
21	wetland ecosystems
21	coastal zones
21	aquatic biology
21	geophysics

Science Topics term usage Thursday, 2005-09-29