Science Topics term usage 2007-05-02

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.)

143	volcanoes
139	river systems
108	earthquakes
87	geographic information systems (GIS)
48	earthquake occurrences
28	mineral resources
28	acid deposition
24	human impacts
24	surface water (non-marine)
24	ground water
23	earth structure
22	tectonic processes
21	streamflow
20	volcanic activity
20	stream discharge
19	tsunamis
18	contamination and pollution
17	water quality
16	water supply and demand
16	water resources
16	ecological competition
16	oil resources
15	landslides
15	climate change
15	hydrology
14	ocean characteristics
14	hurricanes
14	geologic history
14	geologic structure
13	global warming
13	energy resources
13	remote sensing
13	real-time monitoring and reporting
12	ground-water flow
12	hazards
12	stratigraphic sections
12	planetary bodies
11	aerial photography
11	earthquake probabilities
11	water circulation

Science Topics term usage Wednesday, 2007-05-02