Modelling geomorphic systems: scaled physical models
2017-05-19T15:06:18Z (GMT)
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Physical models are scaled representations of a full-scale physical system which can
be applied to inform our understanding of geomorphic process-form interactions. Physical and
experimental modelling has been used extensively and has been proven to be of critical
importance to the geomorphological user. Physical models can be loosely divided into a number of
categories: 1:1 replica models; Froude-scaled models; distorted scale models; and analogue
‘similarity of process’ models. The choice of physical model type is dependent on the researcher’s
aims and objectives. Advantages include the ability to: (i) isolate variables within a controlled
laboratory setting; (ii) incorporate actual physical processes rather than simplifications; (iii) study
infrequent or hypothetical scenarios, and; (iv) extract qualitative and quantitative data. Users of
physical models must be cautious of the potential shortcomings of using a physical model, such as
scale and laboratory effects. Despite these shortcomings, physical models provide a useful
technique to observe, visualise and measure process-form interactions. This permits an improved
understanding of complex physical relationships which other modelling methodologies may not be
able to simulate.