Development of Capacitive Position Sensing Geophone for Microtremor System

Low frequency performance of geophone is important when using microtremor system to explore deep geological structure. This paper reports on improving low frequency performance of a geophone by measuring the capacity attached on a conventional geophone, and the consistency of geophone can be adjusted. The design, principal, and performance of the capacitive position sensing geophone are presented. A prototype geophone is designed and manufactured in the laboratory.