...
首页> 外文期刊>Seismological research letters >Comparative study of distance attenuation in the central United States and western India
【24h】

Comparative study of distance attenuation in the central United States and western India

机译:美国中部和印度西部距离衰减的比较研究

获取原文
获取原文并翻译 | 示例
           

摘要

Seismic waveform data, recorded by short-period instruments of the Cooperative New Madrid Seismic Network (CNMSN), and a temporary aftershock deployment for the 2001 Bhuj M-W 7.6 earthquake are corrected to the theoretical Wood-Anderson response, and the horizontal peak amplitudes are used to determine local magnitude scales for the Mississippi embayment of the central United States and the Kachchh basin of western India, with a focus to understand the distance attenuation in these two regions. Results show that the distance-correction function for the Mississippi embayment of the central United States is -log A(0) = 1.2362 log r/17.0 - 0.005437 (r - 17.0) + 2.0, showing a weak distance attenuation within 17.0-100.0 km. The distance-correction function for the Kachchh basin of western India is -log A(0) = 1.6213 log r/17.0 - 0.002940(r - 17.0) + 2.0, showing a relatively stronger distance attenuation within 17.0-100.0 km. Kachchh basin distance attenuation is closer to southern California than to the central United States suggesting fundamental differences in local wave propagation between these two intraplate regions.
机译:由新马德里合作地震台网(CNMSN)的短期仪器记录的地震波形数据以及2001年布杰7.6级地震的临时余震部署均已校正为理论伍德安德森响应,并使用了水平峰值幅度确定美国中部的密西西比河沿岸和印度西部的Kachchh盆地的局部尺度,重点是了解这两个区域的距离衰减。结果表明,美国中部密西西比河沿岸的距离校正函数为-log A(0)= 1.2362 log r / 17.0-0.005437(r-17.0)+ 2.0,显示了17.0-100.0 km之内的弱距离衰减。印度西部Kachchh盆地的距离校正函数为-log A(0)= 1.6213 log r / 17.0-0.002940(r-17.0)+ 2.0,显示出17.0-100.0 km之内的距离衰减相对较强。 Kachchh盆地距离衰减比美国中部更接近加利福尼亚南部,这表明这两个板内区域之间的局部波传播存在根本差异。

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