Science Topics term usage 2007-05-31

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.)

89	geographic information systems (GIS)
74	mining and quarrying
54	earthquakes
47	volcanoes
23	earth structure
21	floods
18	streamflow
18	acid deposition
17	human impacts
16	energy resources
16	endangered species
16	climate change
15	earthquake occurrences
15	ground water
15	tectonic processes
14	aerial photography
13	tsunamis
12	water resources
12	surface water quality
12	water quality
12	rocks and deposits
12	maps and atlases
11	invasive species
11	landslides
11	marine ecosystems
11	contamination and pollution
10	hydrology
10	ground-water flow
9	gravitational field (earth)
9	geologic history
9	mineral resources
9	animals
9	volcanic activity
9	precipitation (atmospheric)
9	droughts
8	aquatic ecosystems
8	insects
8	global change
8	hurricanes
8	water chemistry

Science Topics term usage Thursday, 2007-05-31