Science Topics term usage 2007-09-25

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.)

95	geographic information systems (GIS)
84	earthquakes
56	volcanoes
47	earthquake occurrences
30	real-time monitoring and reporting
27	microscopy
26	earth structure
23	contamination and pollution
23	climate change
21	acid deposition
20	global change
20	social sciences
20	stream-gage measurement
19	hurricanes
18	maps and atlases
17	geospatial datasets
17	water quality
16	water resources
16	topography
16	mineral resources
15	health and disease
15	global warming
14	rocks and deposits
14	desert ecosystems
14	tectonic processes
14	invasive species
14	geologic structure
12	animals
12	energy resources
12	ground-water flow
12	land use and land cover
12	oil resources
12	sedimentology
12	water properties
11	tsunamis
11	aquatic ecosystems
11	floods
11	human impacts
10	erosion
10	geologic history

Science Topics term usage Tuesday, 2007-09-25