• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Bulletin of the Seismological Society of America >Strong-Motion Directionality and Evidence of Rupture Directivity Effects during the Chi-Chi M-w 7.6 Earthquake
【24h】

Strong-Motion Directionality and Evidence of Rupture Directivity Effects during the Chi-Chi M-w 7.6 Earthquake

机译：在智智M-W 7.6地震期间，强运动方向性和破裂方向性效应的证据

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

This article investigates the spatial distribution, predominant direction, and variations in the intensity measures (IMs) with orientation for classified pulselike and nonpulse motions during Chi-Chi M-w 7.6 earthquake. The results show evidence of high polarization for long-period spectral accelerations at relatively large source-to-site distances (50-100 km) north of the Chelungpu fault. The polarization of long-period motions shows a clear con elation with the directivity parameters' iso-chrone directivity predictor and xi, indicating a connection between directionality and rupture directivity. The variation in strong-motion directionality with the period is also studied. The discrepancy in directionality caused by strong directivity increases with the period from 1 to 10 s, which confirms a clear correlation of period-dependent directionality with directivity effects. This study finds stronger directionality of pulse-like motions than nonpulse motions for long periods over 3 s with higher maximum-to-median and maximum-to-minimum IM ratios. For periods over 3 s, the maximum-to-median ratios of pulse-like motions are higher than the mean prediction of the Shahi and Baker (2014a) model, whereas those of nonpulse motions are lower than the prediction. However, this study does not find simple and clear results for the directions of the maximum component at different periods for pulse-like and nonpulse motions. Despite clear differences between the unidirectional fling-step and bidirectional forward directivity pulses, the effects of fling-step and forward directivity are actually coupled in the waveforms.
机译：本文调查了在奇志法M-W 7.6次地震期间对分类肺和非水动动量的方向进行强度措施（IMS）的空间分布，主要方向和变化。结果表明，在Chelungpu故障北部的相对大的源地距离（50-100公里）的长期光谱加速度的高偏振的证据。长周期运动的偏振显示出具有方向性参数的ISO- Chrone方向性预测器和XI的透明扩展，表示方向性和破裂方向性之间的连接。还研究了与周期的强运动方向性的变化。强大的方向性引起的方向性的差异随着1到10秒的时间而增加，这证实了时期依赖方向性与方向性影响的相关性。本研究发现脉冲样运动的方向性而不是长时间的非脉冲运动，超过3秒，具有更高的最大中值和最大的最大IM比率。对于超过3秒的时间，脉冲样运动的最大逆向中值比率高于Shahi和Baker（2014A）模型的平均预测，而非水动动动动动动动动动动动动量低于预测。然而，该研究没有找到脉冲样和非水动量的不同时期的最大组分的方向的简单明了的结果。尽管单向剥落步骤和双向前向方向性脉冲之间存在明显差异，但剥落步骤和前向方向性的影响实际上是在波形中耦合的。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号