[1] We investigate the rupture process of the 1999 Chi-Chi, Taiwan, earthquake using extensive near-source observations, including three-component velocity waveforms at 36 strong motion stations and 119 GPS measurements. A three-plane fault geometry derived from our previous inversion using only static data [Ji et al., 2001] is applied. The slip amplitude, rake angle, rupture initiation time, a...

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...

In some subsurface urban development projects, bedrock faults intersecting with the tunnel path are inevitable. Due to high costs of it is necessary study behavior such concrete structures under fault movement risks. Using an advanced 3D numerical finite difference code and a plastic hardening constitutive model for soil, this paper examined performance straight oblique segmented Tabriz Subway ...

Based on various velocity fields from Global Positioning System (GPS) data over nearly 20 years in the Sichuan–Yunnan region, this paper calculated strain rate field and its spatiotemporal characteristics by using an improved least squares collocation method. We evaluated extensively discussing impact of non-tectonic factors calculation. Subsequently, we described present-day features their var...

Due to the number of severe traffic collisions involving motorcycles, a comprehensive investigation is required determine their causes. This study analyzed Texas crash data from 2017 2021 who was at fault and how various factors affect frequency severity motorcycle collisions. Moreover, tried identify high-risk sites for crashes. Utilizing bivariate analysis logistic regression models, investig...

Central Tibet constitutes part of the central Qinghai–Tibetan Plateau, which is one highest seismically active areas in China. This paper discusses regularity seismic activity this area. Based on a stratified viscoelastic earth model, we calculated Coulomb stress changes imparted from four strong earthquakes (M ? 6.3) along Bengco–southeastern piedmont Nyainqentanglha mountain fault zone region...

Since 1890, the San Jacinto fault in Southern California has been the site of eleven earthquakes of moderate magnitude (6 < M < 7) and tens of thousands of small earthquakes, but none of large magnitude1,2. This activity contrasts sharply with the seismic quiescence of the nearby southern San Andreas fault. Although this fault slips at a rate higher than that associated with the San Jacinto fau...

One of the fundamental problems in continental rift segmentation and propagation is how strain accommodated along large rift-bounding faults (border faults) since propagating border control expression zones, syn-rift depo-centers, long-term basin evolution. In Southern Malawi Rift, where previous studies on early-stage rifting only assessed fault structure from surficial topographic expression,...

We studied the geometry and petrophysical properties of fault core damage zones a deformation band zone in arkosic sandstones Cretaceous Antenor Navarro Formation Rio do Peixe Basin, Brazil. The present work includes results from fieldwork laboratory measurements. performed structural, geometric, permeability measurements field. These were on longitudinal scanline along 18 orthogonal scanlines ...

[1] We develop a two-dimensional boundary element earthquake cycle model including deep interseismic creep on vertical strike-slip faults in an elastic lithosphere coupled to a viscoelastic asthenosphere. Uniform slip on the upper part of the fault is prescribed periodically to represent great strike-slip earthquakes. Below the coseismic rupture the fault creeps in response to lithospheric shea...