【摘要】 利用北川附近震前水准数据,以及2008年和2010年两条一等水准数据,得到了北川附近同震和震后垂直位移量,获得如下结果:北川附近的北川—映秀断裂的同震垂直位移量为4.711m,断层上下盘最大位错量为5.1m,然而,位于平武县境内的青川断裂同震位错仅有0.064m.2008—2010年,汶川MS8.0地震后北川附近的北川—映秀断裂震后垂直位移速率为5—27mm/a,江油县大康镇附近的江油—广元断裂震后垂直位移速率为20.6mm/a,而古城区附近的青川断裂垂直位移速率仅为0.2—1.3mm/a.更多还原

【Abstract】 Co-and post-seismic vertical displacements of the Wenchuan MS8.0 earthquake,derived from pre-seismic leveling data and two measurements in 2008 and 2010 along two first-order leveling lines near Beichuan,show the following features:Co-seismic displacement along Beichuan--Yingxiu fault was as large as 4.711 m near Beichuan,where the maximum observed fault offset was 5.1 m.In contrast,the observed co-seismic offset of the Qingchuan fault in Pingwu County was only 0.064 m.From 2008 to 2010,the post-seismic displacement rate was 5—27 mm/a near Beichuan--Yingxiu fault in Beichuan area,20.6 mm/a at Jiangyou--Guangyuan fault near Dakang,and only 0.2—1.3 mm/a at Qingchuan fault near Gucheng.更多还原