Date of Award:
Master of Science (MS)
Electrical and Computer Engineering
Duane G. Chadwick
The ability of the analog computer to stimulate physical phenomena is used in conjunction with a resistance paper model of the Walnut Gulch watershed in Arizona to plot constant precipitation maps from data obtained from recorded rainfall. Voltages which are proportional to rainfall at a specific raingage, located at scaled points of the resistance paper model, set up an electric field on the resistive sheet which is detected and processed by the computer. The detected potential is compared to a reference potential, or "precipitation value", and the necessary analog networks allow plotting of the equipotential line which is directly analogous to an isohyetal line.
Kirwan, Maurice George, "A Method for Plotting Isohyetal Maps Using an Analog Computer" (1969). All Graduate Theses and Dissertations. 2939.
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