[1] We study how heterogeneous rupture propagation affects the coherence of shear and Rayleigh Mach wavefronts radiated by supershear earthquakes. We address this question using numerical simulations of ruptures on a planar, vertical strike‐slip fault embedded in a three‐dimensional, homogeneous, linear elastic half‐space. Ruptures propagate spontaneously in accordance with a linear slip‐weaken...

A comprehensive surface displacement monitoring system installed in the recently deglaciated bedrock slopes of Aletsch Valley shows systematic reversible motions at annual scale. We explore potential drivers for this deformation signal and demonstrate that main driver is pore pressure changes groundwater fractured granitic mountain slopes. The spatial pattern these deformations similar magnitud...

The deformation pattern and strain partitioning in the Eastern Chinese Tian Shan are poorly known because of lack quantitative study kinematics rate major structure. Here we report a late Quaternary shortening for most active reverse fault-and-fold Shan. We quantified Huoyanshan structure based on detailed high-resolution remote sensing image interpretations, field investigations geological map...

The data from five strong-motion accelerograph stations centered above and surrounding the fault are used to develop an approximate three-dimensiunal dislocation model for the San Fernando earthquake. In the resulting model, the dislocation originates near the instrumentally determined epicenter at a depth of 9.2 km and then propagates southward and upward with a velocity of 2 kin/see. Calculat...

Abstract This study uses the 3D crustal velocity model and relocated earthquake hypocenters, including 2018–2021 sequences, to re-assess seismogenic structures at northern Longitudinal Valley. Earthquake focal mechanisms hypocenters from clusters suggest a gentle west-dipping fault existing under Valley Coastal Range. associated with this indicate it develops along base of high-velocity Central...

A lineament is a linear feature in a landscape which is an expression of an underlying geological structure such as a fault. Typically a lineament will comprise a fault-aligned valley, a series of fault or fold-aligned hills, a straight coastline or indeed a combination of these features. Fracture zones, shear zones and igneous intrusions such as dykes can also give rise to lineaments. Lineamen...

Technical Abstract We determined orientations of principal stresses around the San Andreas Fault (SAF) system in the greater San Francisco Bay Area and regions further north along the strike-slip plate boundary. Stress orientations, as well as a ratio between stress magnitudes, were determined by inversions of approximately 6000 earthquake fault plane solutions, divided into ~100 groups based o...

We explore the use of elastic Green’s functions in inversions one-dimensional Interferometric Synthetic Aperture Radar (InSAR) observations to recover three-dimensional displacement fields. This approach enforces coupling horizontal displacements and limits need for prior assumptions about subsurface sources, driving deformation or explicit damping a given dimension full 3D field. apply these m...

Within the framework of this study, morphotectonic and structural characteristics Sürgü Çardak faults, northern branch East Anatolian Fault Zone (EAFZ) between Çelikhan Göksun, were investigated with scrutiny. Further, results obtained assessments supported fortified a thorough literature review field studies; thereby, geological features region have been analyzed immaculately. The faults mappe...

Integration of Apollo 17 field observations and photographs, sample investigations, Lunar Reconnaissance Orbiter Camera images, Chandrayaan-1 Moon Mineralogy Mapper (M 3 ) spectra, and Miniature Radio Frequency (Mini-RF) S-band radar images provides new insights into the geology of the valley of Taurus– Littrow on the Moon. Connecting the various remote observations to sample data enables a set...