SEISMIC OBSERVATION WITH HIGH-PERFORMANCE SEISMOMETERS (STS)-INTRODUCTION OF OBSERVATION SYSTEM AND EXAMPLES OF SEISMIC WAVEFORM-

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  • 超高性能地震計(STS)による地震観測-観測システムと地震波形例の紹介-
  • チョウ コウセイノウ ジシンケイ STS ニ ヨル ジシン カンソク カンソク

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Abstract

We have begun to observe seismic waves with very-broad-band and wide dynamic rangeseismometer (STS) since July 1988 at Tottori Observatory, Hokuriku Observatory and KamitakaraObservatory which belong to Research Center for Earthguake Prediction, Disaster PreventionResearch Institute, Kyoto University. The STS system has dynamic range of 140 dB and itsvelocity output is flat for the period range between 0.1 and 360 s. Therefore it can completelyrecord both body waves and surface waves that are too big for the microearthquake observationsystem to record them without scaleover. It is very important to record such complete wave-forms because they can be used in the studies of source mechanism and structure of the Earth'sinterior. In this paper we will introduce our STS system and some examples of waveformsrecorded with the system.

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