Science Topics term usage 2007-09-04

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.)

133	earthquakes
99	geographic information systems (GIS)
53	earthquake occurrences
49	erosion
38	volcanoes
26	earth structure
26	ground water
24	wildlife
22	climate change
22	ground-water flow
22	acid deposition
21	hurricanes
19	real-time monitoring and reporting
18	invasive species
18	animals
18	geologic structure
17	maps and atlases
17	global change
17	water quality
16	topics
16	floods
16	streamflow
15	tectonic processes
15	contamination and pollution
15	endangered species
15	mineral resources
14	human impacts
14	energy resources
14	biogeography
13	fires
13	geologic history
12	ocean characteristics
12	glaciation
12	surface water (non-marine)
12	tsunamis
12	geochemistry
11	droughts
11	water properties
11	map coordinate systems
11	earthquake probabilities

Science Topics term usage Tuesday, 2007-09-04