Science Topics term usage 2005-09-30

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.)

159	snow and ice cover
127	earthquakes
80	volcanoes
73	geographic information systems (GIS)
69	earth structure
63	energy resources
40	earthquake occurrences
34	core (earth)
30	maps and atlases
27	surface water (non-marine)
26	fires
24	mineral resources
23	tectonic processes
23	geologic structure
22	water quality
22	geologic history
22	water resources
21	geothermal resources
20	inner core (earth)
20	animals
20	aerial photography
20	contamination and pollution
19	water supply and demand
19	nonvascular plants
18	cartography
18	human impacts
18	storms
18	hazards
18	outer core (earth)
18	floods
17	rocks and deposits
16	oil resources
16	global change
15	map coordinate systems
15	climate change
15	landslides
14	ground water
14	tsunamis
14	crust (earth)
14	hurricanes

Science Topics term usage Friday, 2005-09-30