| 2003年10月25日甘肃省民乐-山丹MS 6.1地震强震近场记录和分析 |
| |
| 引用本文： | 闵祥仪,姚凯,何新社.2003年10月25日甘肃省民乐-山丹MS 6.1地震强震近场记录和分析[J].西北地震学报,2003,25(4):289-292,318. |
| |
| 作者姓名： | 闵祥仪 姚凯 何新社 |
| |
| 作者单位： | 中国地震局兰州地震研究所,甘肃,兰州,730000 |
| |
| 基金项目： | 中国地震局兰州地震研究所论著编号:LC2003061 |
| |
| 摘 要： | 2003年10月25日甘肃民乐-山丹间发生Ms6．1地震．震前在兰州地震研究所明确的预报意见指导下就派出4台数字流动强震仪到甘肃省河西地区进行流动观测，其中民乐流动台获得近场主震记录．震中距为12．6km，EW向加速度峰值为33lcm／s^2，NS向加速度峰值为332cm／s^2，垂直向加速度峰值为209cm／s^2．其它固定自由场数字强震台山丹、肃南、武威也获得记录．本文分析了近场主震频谱以及远场加速度衰减规律．
|
| 关 键 词： | 民乐-山丹地震 近场强震动 数字化记录 衰减 |
| 文章编号： | 1000-0844(2003)04-0289-04 |
| 收稿时间： | 2003/11/11 0:00:00 |
STRONG MOTION RECORDS AND PRELIMINARY ANALYSIS FOR MINLE-SHANDAN MS 6.1 EARTHQUAKE ON OCT. 25, 2003, GANSU PROVINCE |
| |
| MIN Xiang-yi,YAO Kai and HE Xin-she.STRONG MOTION RECORDS AND PRELIMINARY ANALYSIS FOR MINLE-SHANDAN MS 6.1 EARTHQUAKE ON OCT. 25, 2003, GANSU PROVINCE[J].Northwestern Seismological Journal,2003,25(4):289-292,318. |
| |
| Authors: | MIN Xiang-yi YAO Kai and HE Xin-she |
| |
| Institution: | Lanzhou Institute of Seismology, CSB, Gansu Lanzhou 730000, China,Lanzhou Institute of Seismology, CSB, Gansu Lanzhou 730000, China and Lanzhou Institute of Seismology, CSB, Gansu Lanzhou 730000, China |
| |
| Abstract: | Minle-Shandan M_S6.1 earthquake occurred on Oct.25,2003.in west of Gansu province. Just before the earthquake 4 digital mobile strong motion instruments were erected in Hexi region, near the epicenter,by Lanzhou Institute of Seismology, according to the definite prediction opinion of the Institute. One instrument of them in Minle mobile station obtained the near-field strong motion seismic record of main shock. The distance to epicenter is 12.6 km . The maximum acceleration on direct EW is 331 cm/s~(2);on NS is 332 cm/s~(2)and on UD is 209 cm/s~(2). Furthermore some immobile strong motion stations in Hexi region (Shandan ,Sunan and Wuwei) also obtained this event . In the paper the observed near-field frequency spectrum of main shock and the acceleration attenuation equation for Hexi region, Gansu province, are discussed based on the data of M_S6.1 main shock and M_S5.8 aftershock. |
| |
| Keywords: | Minle-Shandan earthquake Near-field strong motion Digital data Attenuation |
| 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 |
|
