[1] We expand the theory of critically tapered Coulomb wedge for accretionary prisms by considering stress changes in subduction earthquake cycles. Building on the Coulomb plasticity of the classical theory, we assume an elastic–perfectly Coulomb plastic rheology and derive exact stress solutions for stable and critical wedges. The new theory postulates that the actively deforming, most seaward...

A Mw 7.1 earthquake struck the Eastern Anatolia, near the city of Van (Turkey), on 23 October 2011. We investigated the coseismic surface displacements using the InSAR technique, exploiting adjacent ENVISAT tracks and COSMO-SkyMed images. Multi aperture interferometry was also applied, measuring ground displacements in the azimuth direction. We solved for the fault geometry and mechanism, and w...

The 3 August 2014 Ludian earthquake with a moment magnitude scale (Mw) of 6.1 induced widespread landslides in the Ludian County and its vicinity. This paper presents a preliminary analysis of the distribution patterns and characteristics of these co-seismic landslides. In total, 1826 landslides with a total area of 19.12 km2 triggered by the 3 August 2014 Ludian earthquake were visually interp...

Abstract Fluid-pressure cycles are commonly invoked to explain alternating frictional and viscous deformation at the base of seismogenic crust. However, stress conditions geological environment fluid-pressure cycling unclear. We address this problem by detailed structural investigation a vein-bearing shear zone Sagelvvatn, northern Norwegian Caledonides. In dominantly zone, synkinematic quartz ...

Recurrence interval of large earthquake on an active fault zone is an important parameter in assessing seismic hazard. The 2008 Wenchuan earthquake (Mw 7.9) occurred on the central Longmen Shan fault zone and ruptured the Yingxiu-Beichuan fault (YBF) and the Guanxian-Jiangyou fault (GJF). However, there is a considerable discrepancy among recurrence intervals of large earthquake in preseismic a...

Tectonic faults show rheological heterogeneity in interfaces, and the spectrum of their sliding regimes span a continuum from slow-slip events to dynamic ruptures. The fault interface is crucial for mechanics faulting. By using earthquake source locations, complex structure can be reproduced at resolution down 50–100 m. Here, we use declustered seismic catalog Northern California investigate st...

Long Valley caldera generates swarms at the base of seismogenic zone with prevalent upward migration.

Earlier work by the authors (Vallianatos and Tzanis, 1999b), has proposed a model for the propagation and scaling of electric earthquake precursors, according to which the pre-seismic electric field emission is due to some time dependent polarisation appearing in an ensemble of electrified crustal volumes within the seismogenic source, which are distributed according to a fractal power law. Her...

Integrated Ocean Drilling Program (IODP) Expedition 333 returned to two sites drilled during IODP Expedition 322 on the ocean side of the Nankai Trough to pursue the characterization of the inputs to the Nankai subduction and seismogenic zone, as part of the Nankai Trough Seismogenic Experiment (NanTroSEIZE) multi-expedition project. Site C0011 is located at the seaward edge of the trench and S...

The goal of this paper is to develop a new empirical relationship between observed macroseismic intensity and strong ground motion parameters such as peak acceleration (PGA) velocity (PGV) for the Vrancea subcrustal earthquakes. recent earthquakes provide valuable data examine these relationships seismogenic region. This region one most active seismic zones in Europe it well-known We correlatio...