Science Topics term usage 2007-11-07

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.)

78	earthquakes
75	volcanoes
74	geographic information systems (GIS)
68	igneous rocks
25	earthquake occurrences
23	marine water quality
22	real-time monitoring and reporting
21	tectonic processes
20	earth structure
19	human impacts
19	climate change
17	land use and land cover
16	acid deposition
16	energy resources
15	sediment transport
15	rocks and deposits
15	erosion
14	oil resources
14	water quality
14	contamination and pollution
14	volcanic rocks
14	tsunamis
13	endangered species
13	floods
12	topics
12	aquatic ecosystems
12	gravitational field (earth)
12	impact cratering
12	droughts
12	desert ecosystems
12	ground water
12	global warming
11	geologic structure
11	grassland ecosystems
11	volcanic activity
11	geolocation measurement
11	geologic history
11	GPS measurement
10	biodiversity
10	drainage basins

Science Topics term usage Wednesday, 2007-11-07