2007年3月5日攀枝花3·5级地震强震近场记录初步分析  

Near-field strong acceleration records and preliminary analysis of Panzhihua M_l3.5 Earthquake on 5 March 2007,Sichuan Province

作　　者：赖敏[1] 余桦[1] 孙玮[1] 朱建钢[1] 黎大虎[1] 

机构地区：[1]四川省地震局,四川成都610041

出　　处：《四川地震》2008年第3期24-30,共7页Earthquake Research in Sichuan

摘　　要：2007年3月5日攀枝花市发生3.5级地震,震中烈度为Ⅴ度,四川省地震局地震监测研究所初步确定地震震中位置为:北纬26.5°,东经101.85°。布设在攀枝花地区9个固定台站的强震仪记录到该次地震的主震振动加速度值,其中,金江台仪器记录到的结果为:水平加速度峰值东西向135.203 cm/s2,南北向126.8 cm/s2,垂直向22.93 cm/s2,并且根据这些数据分析了这次地震的振动特性是以右旋为主的。Panzhihua M,3.5 Earthquake occurred on 5 March 2007 in south of Sichuan Province. 9 strong acceleration records in the near-field strong acceleration were obtained. The shortest epicenter distance from our seismic station is 5.42 km. The maximum horizontal acceleration record value on EW and NS directions are 135. 4 cm/s^2 and 126. 8 cm/s^2 respectively. The maximum vertical acceleration value is 22. 93 cm/s^2. The characteristic based on the near-field acceleration records is discussed in this paper.

关 键 词：强震观测 强震仪 加速度 逆断层 震源机制 

分 类 号：P315.9[天文地球—地震学]