INFLUENCE OF FAULT MECHANISM, DEPTH, AND REGION ON STRESS DROPS OF SMALL AND MODERATE EARTHQUAKES IN JAPAN

Toshimi SATOH

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INFLUENCE OF FAULT MECHANISM, DEPTH, AND REGION ON STRESS DROPS OF SMALL AND MODERATE EARTHQUAKES IN JAPAN

机译：断裂机制，深度和区域对日本中小地震应力降的影响

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Stress drops of 168 earthquakes (focal depth ≦ 60 km, 4.4 ≦ M_W ≦ 6.9) are estimated by a generalized-inverse method using strong motion records in Japan. Stress drops of crustal earthquakes are dependent of focal depths. Stress drops of reverse-faulting earthquakes are two times greater than those of strike-slip faulting earthquakes and stress drops of strike-slip faulting earthquakes are two times greater than those of normal-faulting earthquakes. These results are consistent with the crustal strength expected from a frictional law. Stress drops of intraplate earthquakes have more variation than those of interplate earthquakes, but are two times greater than those of interplate earthquakes on average.

机译：在日本，使用强运动记录通过广义逆方法估算了168次地震（震源深度≤60 km，4.4≤M_W≤6.9）的应力降。地壳地震的应力降取决于震源深度。反断层地震的应力降是走滑断层地震的两倍，而走断层地震的应力降是正常断层地震的两倍。这些结果与摩擦定律预期的地壳强度一致。板内地震的应力降比板间地震的应力降具有更大的变化，但平均比板间地震的应力降大两倍。

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《Structural engineering earthquake engineering》 |2006年第1期|p.125s-134s|共10页
作者
Toshimi SATOH;
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作者单位

Ohsaki Research Institute, Inc. (Fukoku Seimei Bldg. 2-2-2, Uchisaiwai-cho, Chiyoda-ku. Tokyo. 100-0011, Japan);

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原文格式 PDF
正文语种 eng
中图分类建筑施工;
关键词
stress drop; fault mechanism; crustal earthquake; interplate earthquake; intraplate earthquake;

机译：应力降;断裂机制;地壳地震;板间地震;板内地震;

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INFLUENCE OF FAULT MECHANISM, DEPTH, AND REGION ON STRESS DROPS OF SMALL AND MODERATE EARTHQUAKES IN JAPAN

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