1.
n. [Geophysics]
A representation of a physical property or entity that can be used to make predictions or compare observations with assumptions. Mathematical
velocity models are commonly used to predict the depth to a
formation of interest. Physical models, such as layers of
clay or putty, can be used to simulate
rock layers. As Sheriff (1991) points out, agreement between data and a model does not prove that the model is correct, since there can be numerous models that agree with a given data set.