板内地震复发间隔对断层长度的标度关系研究及应用探索  

STUDY ON THE SCALING RELATIONS BETWEEN THE INTRAPLATE EARTHQUAKE RECURRENCE INTERVAL AND FAULT LENGTH AND EXPLORE ITS APPLICATION

作　　者：杨国栋[1] 李晓峰[1] 齐王芳 

机构地区：[1]国家地震局兰州地震研究所

出　　处：《高原地震》1996年第2期73-77,共5页Plateau Earthquake Research

摘　　要：虽然关于一些重要参数值仍然存在显著的不确定性，地学家们一致认为断层分布遵从幂律标度关系。本文我们把这些标度关系和地震分布的幂律标度关系结合起来获得了区域板内地震复发间隔对断层长度的标度关系式，再对其进行局部校准进而得到某一具体小地方的地震危险估计方法。小断层（未跨越孕震层与断４层）的标度资料表明地震复发间隔和断层长度的负幂成比例变化。由于最近认识到了大震标度中参数的不确定性，对于大断层（跨越孕震层的断层），其地震复发间隔是和断层长度的负幂还是和正幂成比例变化的问题是不确定的，这个问题对地震危险估计是至关重要的。Though a few major parameters have outstanding uncertainty yet, seismologists think unanimously distribution of fault follows power law scaling relation. In this paper,the authors have combined thisscaling relstion with power law scaling relation of earthquake distribution and have obtained the scaling relation between regional intraplate earthquake recurrence interval and fault length,further,have get aseismic risk evaluation method of a cerium concrete small region through regional calibration. The scaling data of small fault show that the earthquake recurrence interval changes with negstive power of thefsult length,but this change which is negative power relation and positive power is an uncertainty for large fault.

关 键 词：板内地震 地震复发间隔 地震危险性估计 断层长度 

分 类 号：P65[天文地球—地质学]