Science Topics term usage 2007-01-03

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	geographic information systems (GIS)
98	seismic networking
92	earthquakes
70	volcanoes
29	earthquake occurrences
23	floods
22	animals
21	acid deposition
19	earth structure
19	streamflow
16	contamination and pollution
16	energy resources
15	ground water
15	ocean temperature
15	climate change
15	global warming
15	tsunamis
14	tectonic processes
14	seismology
14	aerial photography
13	topography
13	precipitation (atmospheric)
13	mineral resources
13	global change
12	magnetic field (earth)
12	ground-water flow
12	water quality
12	geologic structure
12	surface water (non-marine)
11	oil resources
11	map coordinate systems
11	hazards
11	maps and atlases
11	endangered species
11	real-time monitoring and reporting
11	health and disease
10	geologic history
10	nonpoint-source pollution
10	gravitational field (earth)
10	ocean characteristics

Science Topics term usage Wednesday, 2007-01-03