Science Topics term usage 2008-02-13

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.)

82	earthquakes
60	geographic information systems (GIS)
55	volcanoes
33	river systems
27	invertebrate zoology
27	earthquake occurrences
25	water quality
23	acid deposition
23	erosion
23	climate change
22	aerial photography
21	human impacts
20	land use and land cover
20	floods
19	contamination and pollution
19	water properties
19	tsunamis
18	global warming
18	sediment transport
18	real-time monitoring and reporting
17	energy resources
17	aquatic ecosystems
17	landslides
16	rocks and deposits
16	earth structure
16	endangered species
16	geologic history
15	tectonic processes
15	health and disease
15	sedimentation
15	geologic structure
15	ground-water flow
14	impact cratering
14	glaciation
14	gravitational field (earth)
14	coal resources
14	streamflow
14	mineral resources
13	land surface characteristics
13	social sciences

Science Topics term usage Wednesday, 2008-02-13