[1] We evaluate the effect of coseismic stress changes on the fault slip at midcrustal depth, assuming a velocity-strengthening brittle creep rheology. We show that this model can help reconcile the time evolution of afterslip, as measured from geodesy, with aftershocks decay. We propose an analytical expression for slip of the brittle creeping fault zone (BCFZ) that applies to any dynamic or s...

The rapid assessment of an intensity map following a strong earthquake forms the foundation for risk and emergency response in Chinese mainland. determination major axis direction assessed depends on various factors, including nearby active faults, instrumental intensities, distribution aftershocks. To evaluate effectiveness promptly determining based early aftershock distribution, we relocated...

Aseismic afterslip has been proposed to drive aftershock sequences. Both moment and number broadly increase with mainshock size, but can vary beyond this scaling. We examine whether relative (afterslip moment/mainshock moment) correlates several key sequence characteristics, including cumulative (both absolute size), seismicity rate change, b-value, Omori decay exponent. select Mw ? 4.5 aftersh...

b a ckground: anoph eles fluviatilis , one of the major malaria vectors in iran, is assumed to be a complex of sibling species. the aim of this study was to evaluate cytochrome oxidase i (coi) gene alongside 28s-d3 as a diagnostic tool for identification of an. fluviatilis sibling species in iran. m e t hods: dna sample belonging to 24 an. fluviatilis mosquitoes from different geographical area...

The extent to which ongoing seismicity in intraplate regions represents long-lived aftershock activity is unclear. We examined historical and instrumental seismicity in the New Madrid central U.S. region to determine whether present-day seismicity is composed predominantly of aftershocks of the 1811-1812 earthquake sequence. High aftershock productivity is required both to match the observation...

A mainshock is usually accompanied by a group of ground motions. In many design codes, the effects seismic sequences have been neglected or underestimated. Aftershocks can increase structural damage even cause failure. The current study evaluated behavior rehabilitated and as-built reinforced concrete (RC) structure under real scaled mainshock-aftershocks using nonlinear analysis. Verification ...

In an earlier study (Van Lieshout and Stein in Math Gesoci 44(3):309–326, 2012) we postulated the existence of two major earthquakes in the 2005 Kashmir disaster instead of a single one, based upon the pattern of aftershocks. In this study, we explore this hypothesis further by fitting several spatial point pattern models. In particular, we discuss the Hawkes and the trigger process models for ...

[1] We estimate the rate of aftershocks triggered by a heterogeneous stress change, using the rate-and-state model of Dieterich. We show that an exponential stress distribution Pt(t) exp( t/t0) gives an Omori law decay of aftershocks with time 1/t, with an exponent p = 1 Asn/t0, where A is a parameter of the rate-and-state friction law and sn is the normal stress. Omori exponent p thus decrease...