Science Topics term usage 2007-01-09

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.)

146	volcanoes
132	earthquakes
126	geographic information systems (GIS)
100	tsunamis
44	earthquake occurrences
26	tectonic processes
23	earth structure
20	ground water
18	contamination and pollution
17	acid deposition
17	map coordinate systems
17	outer core (earth)
16	animals
15	land surface characteristics
15	climate change
14	erosion
14	marine water quality
13	global warming
13	hazards
12	geologic history
12	mineral resources
12	water quality
12	natural gas resources
12	human impacts
11	ocean temperature
11	rocks and deposits
11	GPS measurement
11	energy resources
11	streamflow
11	topography
11	cartography
11	geologic structure
10	precipitation (atmospheric)
10	floods
10	volcanic activity
10	topics
10	maps and atlases
10	river systems
10	landslides
9	stream-gage measurement

Science Topics term usage Tuesday, 2007-01-09