著者

岸上 冬彦 永田 武 宮村 攝三

出版者

東京帝国大学地震研究所

雑誌

東京帝國大學地震研究所彙報 = Bulletin of the Earthquake Research Institute, Tokyo Imperial University (ISSN:00408972)

巻号頁・発行日

vol.19, no.4, pp.628-646, 1941-09-30

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Detailed investigation of phenomena that accompany earthquakes is fundamental work in seismology. Unfortunately, however, we have not yet advanced to that stage where we could predict earthquakes, while the means at our disposal at present for studying them the instant they arrive are inadequate, particularly, in the case of destructive shocks near their epicentres, all that we can do being to study the aftershocks that are recorded on seismographs, which data are nevertheless very valuable. But there is much information besides that pertaining directly to the main shock, and it is this knowledge that the writers sought to obtain.