Science Topics term usage 2007-06-04

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.)

105	geographic information systems (GIS)
92	earthquakes
52	volcanoes
32	earthquake occurrences
28	TMDL
23	acid deposition
21	earth structure
21	streamflow
20	coastal ecosystems
17	hurricanes
17	energy resources
17	contamination and pollution
16	climate change
16	volcanic activity
15	animals
15	precipitation (atmospheric)
15	tectonic processes
14	stream-gage measurement
14	tsunamis
14	oil resources
14	hazards
14	land use and land cover
13	seismology
13	ground-water flow
13	surface water (non-marine)
12	mineral resources
12	global warming
12	geologic history
12	erosion
12	hydrology
12	rocks and deposits
12	mathematical modeling
12	topography
11	water quality
11	land surface characteristics
11	map coordinate systems
11	maps and atlases
11	geologic structure
11	earthquake probabilities
10	global change

Science Topics term usage Monday, 2007-06-04