Science Topics term usage 2007-11-18

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.)

49	earthquakes
43	geographic information systems (GIS)
36	volcanoes
28	engineering sciences
21	earthquake occurrences
17	earth structure
15	contamination and pollution
10	ocean characteristics
10	climate change
10	ground water
9	rocks and deposits
9	cities
9	tectonic processes
9	topography
8	desert ecosystems
8	endangered species
8	acid deposition
7	aquatic ecosystems
7	mineral resources
7	oil resources
6	global warming
6	sea-floor characteristics
6	human impacts
6	landslides
6	biological and physical processes
6	geologic history
6	health and disease
6	crust (earth)
5	tsunamis
5	water quality
5	floods
5	river systems
5	hurricanes
5	droughts
5	ocean processes
5	side-scan sonar methods
5	erosion
5	geologic structure
5	GPS measurement
5	real-time monitoring and reporting

Science Topics term usage Sunday, 2007-11-18