Science Topics term usage 2007-12-27

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.)

187	earthquakes
87	earthquake occurrences
43	geographic information systems (GIS)
31	volcanoes
15	computational methods
13	surface water (non-marine)
13	ground water
13	tectonic processes
12	maps and atlases
12	earth structure
12	climate change
11	channels
11	real-time monitoring and reporting
11	health and disease
10	contamination and pollution
10	earthquake probabilities
10	ground-water flow
10	mineral resources
9	seismology
9	acid deposition
9	energy resources
9	streamflow
8	cartography
8	stream-gage measurement
8	water supply and demand
8	geologic structure
8	drainage basins
7	water resources
7	geologic history
7	snow and ice cover
7	water properties
7	tsunamis
6	rocks and deposits
6	precipitation (atmospheric)
6	floods
5	global warming
5	volcanic activity
5	surface water quality
5	waste treatment and disposal
5	map coordinate systems

Science Topics term usage Thursday, 2007-12-27