[1] The northern Longitudinal Valley fault in eastern Taiwan creeps at the surface with a small rate of 1 cm/yr but slips in large earthquakes. To improve seismic hazard assessment, it is important to comprehend the slip deficit rate distribution at depth. We discovered 25 ML 2.1– 4.6 repeating earthquakes in this area and inverted GPS measurements for producing an image of the along-strike spa...

This study focuses on determining the orientation and constraining magnitude of present-day stresses in Dezful Embayment Iran’s Zagros Fold Thrust Belt. Two datasets are used: first includes petrophysical data from 25 wells (3 to 4 km deep), second contains 108 earthquake focal mechanisms, mostly occurring blind active basement faults (5 20 deep). Formal stress inversion analysis mechanisms dem...

_Abstract., The recent occurrence of several large su'ike-slip earthquakes provides the opportunity to review and complement available data on the scaling of seismic moment (Mo) with length of rupture (L) for large earthquakes, depending on their tectonic setting and mechanism. For strikeslip earthquakes onquasi-vertical transcurrent faults, the Mo versus L relation has a significant change of ...

Computer simulation of the strong ground motion generated from the earthquake•rupture process on a shallow strike-slip fault are carried out by using a 3-D finite difference method. The faulting process is modeled using a dynamic crack model with fixed rupture velocity or with finite-stress-fracture criterion. The near-source ground motion is sensitive to the details of sliprate or slip-acceler...

Offset geomorphic features along the Superstition Hills fault show evidence for at least one slip event prior to the 1987 surface rupture, and possibly as many as four to five earlier prehistoric earthquakes. We documented several geomorphic features that appeared offset by multiple events by making detailed topographic maps. Offset features were abundant along reaches of the fault with high to...

In this study, joint inversions of Synthetic Aperture Radar (SAR) and Global Position System (GPS) measurements are used to investigate the source parameters of four Mw > 5 events of the 2016–2017 Central Italy earthquake sequence. The results show that the four events are all associated with a normal fault striking northwest–southeast and dipping southwest. The observations, in all cases, are ...

the zagros fold-and-thrust belt is tectonically active and often has active faults with insensible and slow motions. determining the rate of movement and displacement in these faults requires very precise measurements. one of the measurement methods of fault movements is using geodetic and micro-geodetic studies. this research is focused on one of the active faults in the north of shiraz city, ...

Many estimates of seismic risk depend crucially on how well the date of faulting events can be determined from the stratigraphic position of fault strands exposed in exploratory trenches. However, fault strands cut by trenches may seem to die out where they are in fact only poorly expressed, or they may actually die out. Such ambiguity can lead to misinterpretation of the time of the most recen...

[1] The 2006 Mw7.0 Mozambique (Machaze) normal-faulting earthquake ruptured an unusually steeply dipping fault plane ( 75°). The amount of slip in the earthquake decreased from depths of 10 km toward the surface, and this shallow slip deficit was at least partly recovered by postseismic afterslip on the shallow part of the fault plane. An adjacent normal fault segment slipped postseismically (a...

We simulate dynamic ruptures on a strike-slip fault in homogeneous and layered half-spaces and on a thrust fault in a layered half-space. With traditional friction models, sliding friction exceeds 50% of the fault normal compressive stress, and unless the pore pressures approach the lithostatic stress, the rupture characteristics depend strongly on the depth, and sliding generates large amounts...