Abstract
An experiment of aero-triangulation has been made in Izu Peninsula for the purpose of detecting the fault movement of the Izu-Ohshima Kinkai Earthquake by means of aero-survey, instead of ground triangulation. The measurement in Inatori area where a trace of earthquake fault was found gives a nearly same result as the one obtained from field investigations, that is, relative displacement of the Inatori-Omineyama Fault was measured as about one meter in average. The experiment in Hachiyama area shows a clear discontinuity of about 80 cm in the horizontal displacement vectors along the fault line estimated from seismological and geodetic data, though any remarkable fault trace was not found there. The results of present experiment suggest that the method of aero-triangulation is usef ull means for the detection of earthquake fault.
