|
|||||
|
|
| 近场地震动格林函数的解析法与数值法对比研究 | |
| 引用本文： | 张冬丽,陶夏新,周正华.近场地震动格林函数的解析法与数值法对比研究[J].西北地震学报,2004,26(3):199-205. |
| 作者姓名： | 张冬丽 陶夏新 周正华 |
| 作者单位： | 1. 中国地震局工程力学研究所,黑龙江,哈尔滨,150083;中国地震局地震预测研究所兰州科技创新基地,甘肃,兰州,730000;中国地震局兰州地震研究所,甘肃,兰州,730000 2. 中国地震局工程力学研究所,黑龙江,哈尔滨,150083;哈尔滨工业大学,黑龙江,哈尔滨,150083 3. 中国地震局工程力学研究所,黑龙江,哈尔滨,150083;中国科学院力学研究所,北京,100036 |
| 基金项目： | 国家社会公益研究专项(2002DIB30076)资助，中国地震局地震预测研究所兰州基地论著编号:LC20040063. |
| 摘 要： | 分析了在均匀弹性介质中，分别用解析方法和三维波动有限元数值方法计算无限全空间近场地震动的格林函数的理论与方法。将震源处理分为：(1)计算单一位错点源单位脉冲引起的格林函数；(2)用有限断层模型将断面划分为若干子源并有时间延迟，叠加所有子源的格林函数。本以1994年美国北岭地震为例，用解析法和数值方法分别计算了LV3、PCD、MCN三个场地的格林函数，并进行了对比分析。 |
| 关 键 词： | 近场地震动 格林函数 有限断层 子源 |
| 文章编号： | 1000-0844(2004)03-0199-07 |
| 收稿时间： | 2004/6/29 0:00:00 |
| 修稿时间： | 2004年6月29日 |
COMPARISON OF GREEN'S FUNCTION OF NEAR-FIELD GROUND MOTION DUE TO ANALYTICAL METHOD AND NUMERICAL METHOD |
|
| ZHANG Dong-li,TAO Xia-xin and ZHOU Zheng-hua.COMPARISON OF GREEN''S FUNCTION OF NEAR-FIELD GROUND MOTION DUE TO ANALYTICAL METHOD AND NUMERICAL METHOD[J].Northwestern Seismological Journal,2004,26(3):199-205. | |
| Authors: | ZHANG Dong-li TAO Xia-xin and ZHOU Zheng-hua |
| Institution: | ZHANG Dong-li~ |
| Abstract: | The theoiry and method of Green's function of near-field ground motion is calculating in all-around infinite space in terms of single media by analytical method and 3-D finite element difference numerical method are analysed. For the same earthquake, the source can be considered as a single point source or finite several seismic sub-sources on a finite fault plane. Green's function is caused by plus of a point source or by pluses of all sub-sources with reliable time delay. Take the Northridge earthquake in 1994, U.S.A, as an example, Green's function at three rock seismic stations (LV3, PCD, MCN) are computed and analyzed due to both methods. The results show better coherence. |
| Keywords: | Near-field ground motion Green's function Finite fault Seismic sub-sources |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |
| 点击此处可从《西北地震学报》浏览原始摘要信息 | |
| 点击此处可从《西北地震学报》下载免费的PDF全文 | |