Determination of magnitude by use of seismographs recording ground velocity
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Two electromagnetic seismographs HSJ-I, which are coupled with short-period galvanometers, record the velocity of the ground motion in the range of periods from 0.3 to 20 s in the seismological station Moxa. In this way the magnitude of an earthquake can be calculated without respect to the period of the ground motion. The results of such a determination of magnitudes are compared with those reached in the usual manner from short and long-period seismographs recording the ground displacement.
KeywordsGround Motion Usual Manner Ground Displacement Station Moxa Electromagnetic Seismograph
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- Ch. Teupser andW. Ullmann,Der neue Jenaer Horizontalseismograph HSJ-I. Veröff. des Instituts für Bodendynamik und Erdbebenforschung Jena76 (1964).Google Scholar