Science Topics term usage 2005-04-20

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.)

326	earthquakes
191	volcanoes
108	earthquake occurrences
77	geographic information systems (GIS)
65	surface water (non-marine)
65	tectonic processes
57	ground water
53	maps and atlases
53	energy resources
46	mineral resources
42	erosion
40	landslides
40	earth structure
37	water quality
36	aerial photography
34	streamflow
32	geologic history
32	remote sensing
29	climate change
28	tsunamis
28	oil resources
28	ground-water flow
27	global change
27	earthquake probabilities
24	hydrology
24	animals
22	real-time monitoring and reporting
22	natural gas resources
21	marine geology
21	topics
21	water resources
20	snow and ice cover
20	storms
20	rocks and deposits
20	seismology
19	human impacts
19	magnetic field (earth)
18	glaciation
18	freshwater ecosystems
17	geochemistry

Science Topics term usage Wednesday, 2005-04-20