On the Crustal Movement of Volcano Aso (Part 1)

Abstract

With a view of obtaining the relation between the volcanic activity and the crustatf movement, precise levelling along the Ash sightseeing bus route has been carried out 7 times since 1937 to 1953. The Reative vertical displacements of the bench marks i the interval between twa successive lvellings are shown in Table 1 and Fig. 2. From these data the modes of the crustal movement are discussed, and are correlated to the mean values of the amplitudes of the 1st volcanic micro-tremors which ale. recorded by W ieehert's seismograph in Aso Volcanotogica Laboratory. Fig. 1. Map of levelling route and position of bench mark.

Three-dimensional seismic velocity structure beneath Aso Volcano, Kyushu, Japan

“…In the Aso Volcano area, leveling surveys have been repeated since 1937 along the route (17 km in length) from the north foot of the central cones to the active crater of Mt. Naka (Yoshikawa 1954;Kikuchi and Ono 1985). The change in the vicinity of the Mt.…”