Abstract. The spatiotemporal heterogeneity of b values has great potential for helping in understanding the seismogenic process and assessing seismic hazard. However, there is still much controversy about whether it exists or not, an important reason that choice subjective parameters eroded foundations research. To overcome this problem, we used a recently developed non-parametric method based ...

Abstract After a large earthquake, many small earthquakes, called aftershocks, ensue. Additional earthquakes typically do not occur, despite the fact that static stress near edges of fault is expected to trigger further at these locations. Here we analyse ~10,000 highly accurate focal mechanism solutions aftershocks 2016 Mw 6.2 Central Tottori earthquake in Japan. We determine location horizont...

The accurate characterization of microearthquake sequences allows seismologists to better understand the physical processes involved in earthquake nucleation and rupture propagation gain insights on fault geometry at depth. Standard procedures for seismic analysis are based manual detection phase-picking, requiring a huge amount work from expert seismologists, particularly case microseismic eve...

Most reinforced concrete (RC) frames would exhibit different degrees of damage after mainshock excitations, and these mainshock-damaged RC (MD-RC) are highly vulnerable to severe or even complete collapse under aftershock excitations. In the present study, effectiveness utilizing soft steel damper (SSD) as a passive energy dissipation device for seismic retrofitting MD-RC frame actions was inve...

Evaluation of the residual seismic capacity (RSC) post-earthquake damaged buildings is instrumental to formation reasonable recovery strategies. At present, incremental dynamic analysis (IDA) that considers mainshock and aftershock method most frequently used evaluate RSC structures. However, mainshock-induced structural damage determined using IDA may be inconsistent with observed in actual en...

Abstract In December 2007, an Mw2.2 earthquake occurred in a gabbroic dike at 3.3 km depth deep gold mine South Africa. The fore- and aftershock activity was analyzed effort to understand the preparation generation processes of earthquakes; these findings have already been published. present paper focuses on stress state source region mainshock. A 90-m-long borehole across mainshock fault drill...

Abstract Aftershocks are a fundamental characteristic of seismicity, and their generation mechanism is mainly characterized by two physical models, stress transfer from large earthquakes afterslip-induced loading. However, the contribution each to aftershock remains unclear. Here we investigate spatiotemporal variations in activity following 2011 Tohoku-Oki earthquake applying Hierarchical Spac...

Abstract Several recent studies have investigated the risk posed to structures by earthquake sequences, proposing state-dependent fragility/vulnerability models for assets in damaged conditions. However, a critical component such efforts, i.e., ground-motion record selection, has received relatively minor consideration. Specifically, utilization of “consistent” mainshock (MS)–aftershock (AS) gr...