Methods for Measuring Seismicity Rate Changes: A Review and a Study of How the Mw 7.3 Landers Earthquake Affected the Aftershock Sequence of the Mw 6.1 Joshua Tree Earthquake
Methods for Measuring Seismicity Rate Changes: A Review and a Study of How the Mw 7.3 Landers Earthquake Affected the Aftershock Sequence of the Mw 6.1 Joshua Tree Earthquake
复制标题
地震活动率变化的测量方法：Mw 7.3 Landers地震如何影响Mw 6.1约书亚树地震余震序列的回顾和研究
DOI：
10.1007/s00024-004-2665-4
复制
发表时间：
2005
影响因子：
2
通讯作者：
S. Nalbant
中科院分区：
文献类型：
--
作者：
D. Marsan;S. Nalbant
断层相互作用模型的发展引发了对地震发生后地震活动率变化的准确估计的需求。过去已经开发了几种统计方法来服务于这一目的，每种方法都依赖于不同的假设（例如，平稳性，高斯性）。在本文中，我们回顾了这些不同的方法，讨论了它们的局限性，并提出了进一步的改进。绘制鲁棒地震活动率变化的可行性，更具体地说，地震活动率下降（即，地震活动阴影），在最初几天的余震序列，检查。为了这个目的，大量的地震的假设，因此使用高斯统计，通常假设，必须dropped.Finally，我们分析了调制在地震活动率以下的1992年6月28日Mw7.3兰德斯地震在该地区的1992年4月22日Mw6.1约书亚树地震。早期触发的明确实例（即，在最初的几天），其次是地震活动平静，观察。这可能表明存在两种不同的相互作用机制，第一种是由地震波传播引起的活动断层失稳，第二种是由于剩余的静态应力扰动。
The development of fault interaction models has triggered the need for an accurate estimation of seismicity rate changes following the occurrence of an earthquake. Several statistical methods have been developed in the past to serve this purpose, each relying on different assumptions (e.g., stationarity, gaussianity) pertaining to the seismicity process.In this paper we review these various approaches, discuss their limitations, and propose further improvements. The feasibility of mapping robust seismicity rate changes, and more particularly rate decreases (i.e., seismicity shadows), in the first few days of an aftershock sequence, is examined. To this aim, the hypothesis of large numbers of earthquakes, hence the use of Gaussian statistics, as is usually assumed, must be dropped.Finally, we analyse the modulation in seismicity rates following the 1992, June 28Mw7.3 Landers earthquake in the region of the 1992, April 22Mw6.1 Joshua Tree earthquake. Clear instances of early triggering (i.e., in the first few days) followed by a seismicity quiescence, are observed. This could indicate the existence of two distinct interaction regimes, a first one caused by the destabilisation of active faults by the travelling seismic waves, and a second one due to the remaining static stress perturbation.
余震活动减弱的时间和地点：南加州邻近大地震的衰减模式对比
DOI：
--
发表时间：
2003
期刊：
Journal of Geophysical Research 108・B6 2318
影响因子：
--
作者：
Ogata;Y.
通讯作者：
Y.
DOI：
10.1198/016214502760046925
发表时间：
2002-06-01
影响因子：
3.7
作者：
Zhuang, J;Ogata, Y;Vere-Jones, D
通讯作者：
Vere-Jones, D
CSEP 日本地震活动预报的速率/状态库仑应力传递模型
影响因子：
3
作者：
Toda;S. and Enescu;B.
通讯作者：
B.