Science Topics term usage 2007-10-17

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.)

131	earthquakes
116	volcanoes
59	geographic information systems (GIS)
50	earthquake occurrences
29	ground water
28	acid deposition
28	tectonic processes
27	mineral resources
21	earth structure
20	water quality
18	climate change
18	human impacts
18	animals
18	real-time monitoring and reporting
17	rocks and deposits
17	global warming
17	endangered species
15	sediment transport
15	sea-floor characteristics
15	ocean characteristics
14	geologic structure
14	producers (organisms)
14	water supply and demand
13	contamination and pollution
13	oil resources
13	desert ecosystems
13	floods
12	erosion
12	global change
11	geologic history
11	volcanic activity
11	water resources
11	earth characteristics
10	social sciences
10	USGS Quadrangles
10	stream-gage measurement
10	river systems
10	tsunamis
10	field methods
9	plants (organisms)

Science Topics term usage Wednesday, 2007-10-17