Science Topics term usage 2007-02-19

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.)

109	earthquakes
92	geographic information systems (GIS)
87	volcanoes
43	earthquake occurrences
42	drinking water use
36	maps and atlases
26	water resource management
23	acid deposition
23	earth structure
20	ground water
20	rocks and deposits
19	land use and land cover
17	erosion
17	human impacts
16	field methods
15	sediment transport
15	energy resources
15	climate change
14	tectonic processes
14	sedimentation
14	field sampling
13	global warming
13	endangered species
13	water quality
13	seismology
13	oil resources
12	surface water (non-marine)
12	desert ecosystems
12	map coordinate systems
11	landslides
11	floods
11	mineral resources
11	geologic history
11	tsunamis
11	precipitation (atmospheric)
10	volcanic activity
10	animals
10	contamination and pollution
10	magnetic field (earth)
10	geography

Science Topics term usage Monday, 2007-02-19