Science Topics term usage 2006-09

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.)

2596	earthquakes
2146	volcanoes
1584	geographic information systems (GIS)
789	earth structure
720	tectonic processes
658	earthquake occurrences
646	animals
600	water quality
577	maps and atlases
575	tsunamis
557	climate change
515	energy resources
502	life sciences
495	acid deposition
494	mineral resources
479	streamflow
478	rocks and deposits
467	human impacts
466	contamination and pollution
444	health and disease
433	ground water
424	floods
405	geologic history
396	endangered species
396	cartography
380	geography
373	aerial photography
365	erosion
352	planetary bodies
351	ocean characteristics
349	geologic structure
342	landslides
337	crust (earth)
323	global change
320	storms
314	water supply and demand
314	water properties
308	meteorites
303	precipitation (atmospheric)
302	ground-water flow

Scripts used