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Keywords: frequency characteristic
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Proceedings Papers

Paper presented at the ISRM International Symposium, September 21–24, 1981
Paper Number: ISRM-IS-1981-204
... manner to sandwich clay layers. The accelerometer frequency characteristics are more or less flat from 0 to 10 Hz, and the mutual differences between characteristics of accelerometers are slight. Five accelerometers have been installed in the vertical shaft. These are electro-magnetic-type seismometers...

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