An Analysis of Inertial Seismometer-Galvanometer Combinations.

摘要

This report develops the fundamental equations for an inertial seismometer with an electromechanical transducer. If the inductance as well as the resistance of the system are included,the equations of motion are of the third order. These are discussed in some detail. Response curves are developed for several seismometer-galvanometer combinations,some of which are suitable for telemetry. Techniques are discussed for calibration,both in the laboratory and in the field. Practical and theoretical limitations are treated for circumstances in which thermal agitation is a major source of instrumental noise. The bibliography includes lists of equivalent notations. Portions of this document are not fully legible.