Science Topics term usage 2007-02-12

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.)

118	earthquakes
110	geographic information systems (GIS)
104	volcanoes
44	TMDL
43	earthquake occurrences
24	aerial photography
24	climate change
23	acid deposition
23	mineral resources
22	floods
21	tectonic processes
20	contamination and pollution
19	animals
19	energy resources
18	earth structure
17	tsunamis
17	rocks and deposits
17	ground water
16	landslides
16	volcanic activity
16	human impacts
16	hurricanes
16	sediment transport
16	land use and land cover
15	precipitation (atmospheric)
15	global change
15	water chemistry
14	fires
14	erosion
13	cartography
13	oil resources
13	streamflow
13	water quality
12	surface water (non-marine)
12	map coordinate systems
12	snow and ice cover
11	geologic structure
11	coastal zones
11	geologic history
11	ground-water flow

Science Topics term usage Monday, 2007-02-12