Analog computer simulation of Ekman´s drift equations

This paper describes the formulation and testing of an analog computer model to predict the variation with time and depth of the Ekman drift velocity. The mathematical model used in the simulation is the one developed by Ekman. The model is tested on an analog computer to determine the response to a step-function wind assuming a uniform vertical eddy viscosity coefficient. This particular case treated provides a test for the analog model, as an analytical solution for this case already exists.