Science Topics term usage 2007-06

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.)

2642	geographic information systems (GIS)
1418	earthquakes
824	volcanoes
519	earthquake occurrences
497	streamflow
475	earth structure
445	aerial photography
345	acid deposition
342	rocks and deposits
335	ground water
313	mineral resources
307	maps and atlases
297	geologic structure
292	climate change
277	tectonic processes
276	contamination and pollution
264	surface water (non-marine)
257	animals
256	human impacts
254	map coordinate systems
253	real-time monitoring and reporting
250	energy resources
247	floods
244	stream-gage measurement
243	land use and land cover
234	topography
231	water quality
227	water properties
227	tsunamis
221	ground-water flow
221	water resources
220	oil resources
217	sediment transport
215	geologic history
206	landslides
205	hurricanes
202	hydrology
195	cartography
193	magnetic field (earth)
188	geography

Scripts used