Science Topics term usage 2007-05-08

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.)

236	river systems
118	volcanoes
103	earthquakes
88	geographic information systems (GIS)
36	earthquake occurrences
32	animals
32	stream discharge
30	tectonic processes
30	acid deposition
28	floods
27	contamination and pollution
27	hydrology
26	streamflow
24	climate change
23	earth structure
22	surface water (non-marine)
22	water supply and demand
21	endangered species
19	energy resources
19	sediment transport
19	tsunamis
19	mineral resources
18	ground water
18	stream-gage measurement
18	real-time monitoring and reporting
18	global change
18	landslides
17	oil resources
16	rocks and deposits
16	hurricanes
16	human impacts
15	water quality
15	ecosystems
15	maps and atlases
14	water resources
14	hazards
13	volcanic activity
13	droughts
13	natural resource extraction
13	fires

Science Topics term usage Tuesday, 2007-05-08