摘要
In May 2012,the Emilia region of the Po Valley was struck by a seismic crisis with two major events of magnitude M_w 6.1and M_w 5.9.The first event induced widespread sand blows formed along buried channels and old crevasse splay deposits.In the days immediately following the events,the detailed mapping and sampling of the erupted sand was fundamental to record all the seismically-induced phenomena.The study of a trench dug across large fractures at San Carlo(Ferrara)provided also valuable information on the sand blows mechanism and regome.The sedimentological and compositional characteristics of the fracture-filling materials indicate that the sands were erupted from a layer located between 6.8 and 7.5 m depth.Older and deeper Holocene and Pleistocene sand layers were not apparently involved in the liquefaction phenomena.
In May 2012,the Emilia region of the Po Valley was struck by a seismic crisis with two major events of magnitude Mw 6.1and Mw 5.9.The first event induced widespread sand blows formed along buried channels and old crevasse splay deposits.In the days immediately following the events,the detailed mapping and sampling of the erupted sand was fundamental to record all the seismically-induced phenomena.The study of a trench dug across large fractures at San Carlo（Ferrara）provided also valuable information on the sand blows mechanism and regome.The sedimentological and compositional characteristics of the fracture-filling materials indicate that the sands were erupted from a layer located between 6.8 and 7.5 m depth.Older and deeper Holocene and Pleistocene sand layers were not apparently involved in the liquefaction phenomena.
出处
《工程科学与技术》
EI
CAS
CSCD
北大核心
2018年第3期91-94,共4页
Advanced Engineering Sciences
