| 我国西部地区一些强震及中强震前后波速异常的初步研究（三）——和达曲线的曲率变化 |
| |
| 引用本文： | 冯德益,顾瑾平,王周元,盛国英,罗瑞铭,李克龙.我国西部地区一些强震及中强震前后波速异常的初步研究（三）——和达曲线的曲率变化[J].地球物理学报,1978,21(4):292-309. |
| |
| 作者姓名： | 冯德益 顾瑾平 王周元 盛国英 罗瑞铭 李克龙 |
| |
| 作者单位： | 国家地震局兰州地震大队 |
| |
| 摘 要： | 本文根据我国西部地区的实际观测资料,说明在震前波速异常期间,和达图一般都要出现较明显的弯曲,因而和达曲线的曲率可作为监视震前波速异常进程的一项新的辅助指标.文中介绍了和达曲线的二次逼近方法,给出了我国西部地区一些强震及中强震（Ms>5.0）前后和达曲线曲率变化的初步探索结果.最后,文章对所得结果作了简单的讨论,并指出了在地震预报中的应用.
|
| 关 键 词： | 和达图 我国西部地区 曲率系数 中强震 次地震 后波 曲线的曲率 波速异常 波速比异常 曲线曲率 |
| 收稿时间： | 1977-05-10 |
PRELIMINARY STUDY OF THE VELOCITY ANOMALIES OF SEISMIC WAVES BEFORE AND AFTER SOME STRONG AND MODERATE EARTHQUAKES IN WESTERN CHINA （HI）-VARIATIONS OF CURVATURE OF THE WADATI DIAGRAMS |
| |
| FENG DE-YI,GU JIN-PING,WANG ZHOU-YUAN,SHENG GUO-TING,LUO BUI-MING,LI KE-LONG.PRELIMINARY STUDY OF THE VELOCITY ANOMALIES OF SEISMIC WAVES BEFORE AND AFTER SOME STRONG AND MODERATE EARTHQUAKES IN WESTERN CHINA （HI）-VARIATIONS OF CURVATURE OF THE WADATI DIAGRAMS[J].Chinese Journal of Geophysics,1978,21(4):292-309. |
| |
| Authors: | FENG DE-YI GU JIN-PING WANG ZHOU-YUAN SHENG GUO-TING LUO BUI-MING LI KE-LONG |
| |
| Institution: | The Seismological Brigade of Lanchow, State Seismoloffical Bureau |
| |
| Abstract: | In this paper, by using the observational data obtained in western China, it is shown that the wadati diagrams always appear curved during the period of anomalous velocity before the earthquakes, and therefore the curvature of the wadati diagram, as a new precursor, may be used for observation of the velocity anomaly process before an earthquake. A method of second order approximation of the wadati curve is given, and the preliminary results of the curvature variations of the wadati curves before and after some strong and moderate earthquakes （Ms > 5.0） occurred in western China are shown. Finally, a brief discussion of the results as well as their application to earthquake prediction has also been made. |
| |
| Keywords: | |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《地球物理学报》浏览原始摘要信息 |
| 点击此处可从《地球物理学报》下载免费的PDF全文 |
|
