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Recording Characteristics of the K-NET95 Strong-motion Seismograph

1997; Seismological Society of Japan; Volume: 49; Issue: 4 Linguagem: Inglês

10.4294/zisin1948.49.4_467

2186-599X

Shigeo Kinoshita, Masayoshi UEHARA, Toshio TOZAWA, Yasuji WADA, Yousuke OGUE,

Earthquake Detection and Analysis

The National Research Institute for Earth Science and Disaster Prevention (NIED) established a new strong-motion observation network, K-NET. The K-NET is a system which sends strong-motion data on the Internet, data which are obtained from 1, 000 observatories deployed all over Japan.The K-NET used a new strong-motion seismograph, K-NET95. The K-NET95 has a, causal recording system with a dynamic range of about 108dB. From the records of instrumental noise at a quiet hard rock site, we obtained the resolution of the K-NET95. On the seismic records of the K-NET95, we discussed the relation between the resolution and the low-cut filters for integration.From the factory tests, we obtained the effects of temperature on DC offset, sensitivity and overall frequency response characteristics, respectively. Also, cross-talk was measured by using shaking table test.