The Construction and Study of an Acceleration Seismograph

概要

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1. The Object, of the present Seismograph. It his been too difficult for the hitherto built seismograph to calculate the acceleration minutely from its record of displacement or velocity of the earth's movement. So I think it will ha very usefull to construct a seismograph capible of recording acceleration directly. The hitherto one, besides, has been nearly unstable in arrangement, incapable of recording the three dimentional movement by a single miss, full of obstruction on the proper oscillation, deflection of the index outside of the limit of the recording paper as the result of too great amplitude of oscillations and so on. The new seismograph will save all these defects.
東京帝国大学地震研究所,Earthquake Research Institute, Tokyo Imperial University,地震研究所の論文
1933-06-18