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2 March 2011
The discussion that came up in my fluid dynamics course today was about the different kinds of models we use in geology, and how we make sure they’re useful. The main categories that we discussed were conceptual models, mathematical models, experimental models, and geologic maps. (I’ll hit the maps part of it later on; rest assured that there is a good reason for calling a map a model.) The goal of a model is to distill the basic principles of geologic phenomena into a simplified version of what you’re trying to explain. For example, no one can tell exactly where every single particle of ash in a volcanic plume will go, but with models of plume behavior, we can get an idea of how the plume as a whole will behave, and where the majority of those particles will end up.