Science Topics term usage 2007-01-11

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.)

113	earthquakes
105	volcanoes
91	geographic information systems (GIS)
82	land surface characteristics
44	tectonic processes
29	earthquake occurrences
28	maps and atlases
23	land use and land cover
22	energy resources
20	earth structure
20	animals
19	acid deposition
19	outer core (earth)
18	water resources
18	ground water
17	climate change
16	tsunamis
15	oil resources
15	streamflow
14	geography
14	sediment transport
14	water quality
14	sea-floor characteristics
13	aerial photography
13	erosion
13	industrial pollution
13	contamination and pollution
13	volcanic activity
12	rocks and deposits
11	human impacts
11	global warming
10	volcanology
10	wetland ecosystems
10	surface water (non-marine)
10	ocean characteristics
9	river systems
9	map coordinate systems
9	hydrology
9	water chemistry
8	real-time monitoring and reporting

Science Topics term usage Thursday, 2007-01-11