霧島火山帯の火山活動

Abstract

There are nine active volcanoes in Kirishima Volcanic Belt which is extending from Kirishimavolcano group in the southern part of Kyushu to the volcano islands in the East China Sea. UponInvestigations of the records ancient and present on the eruptions of those active volcanoes, thefollowing facts have been found out.1) Each active volcano seems not to have any periodicity of eruption, so long as we can judge fromthe records kept at hand.2) It seems that there is a certain relation among activities of volcanoes one other.3) The earthquakes which occurred in Kirishima Volcanic Belt seems to have some relations withvolcanic activity, and are often observed as fore-runner of large scale eruption.It seems that the various kind of abnormal phnomena at recent in Kirishima Volcanic Belt arequite similar to those from 1913 to 1914, when the volcanic activity was mostly energitic. There-fore, it must be prepared to consolidated observation network for prediction of volcanic disaster.