摘要
本文讨论了发震构造类型与其所发生的地震的类型之间的关系,认为弧形构造的地震类型主要为主余震型和主震—强余震型;平直构造为主震—弱余震型;拐折形构造为续发性大震型;当构造间交角区为拉应力区时,共轭形构造一般为双震型;破碎形构造为震群型。另外,本文还讨论了震源端部构造条件对震形的影响。作者认为震源端部构造一般起调整作用,其能否为地震时断层的错动提供足够的让位条件,决定了其发震类型的差别。在本文中作者还讨论了不同发震构造的地理环境与最大地震强度的关系及今后需要进一步研究的一些问题。
This paper discusses the relationship between the types of earthquake—generating faults and the earthquake types which occurred on the faults with various types. The authors consider that the type of earthquake occurred on arc—like fault is mostly mainshock—aftershock type or main shock—strong aftershock type; the flat—straight fault leads to mainsheck—weak aftershock type; the fold line fault leads to the continuous great earthquake type; the conjugate fault contrastwith the double shock type when the conjugate angle is located tensile strain region and the broken faults region have seismic swarm type. It points out the effect of structural condition at focal end, which has modulating action, on earthquake type, whether, the structure at focal end can offer enough abdicating condition for fault disturbance during earthquake or not will result in the difference of earthquake type. Finally, it also discusses the effect of geographic conditions of seismic fault on the maximum seismic intensity, and some questions that need studying in future.
出处
《西北地震学报》
CSCD
1992年第1期29-36,共8页
Northwestern Seismological Journal
