Results 31 to 40 of about 1,324,286 (243)

Structural heterogeneity and permeability in faulted eolian sandstone: Implications for subsurface modeling of faults [PDF]

open access: yes, 2002
We determined the structure and permeability variations of a 4 km-long normal fault by integrating surface mapping with data from five boreholes drilled through the fault (borehole to tens of meters scale).
Forster, C.B.   +4 more
core   +3 more sources

Geometry and kinematics of the Baza Fault (central Betic Cordillera, South Spain): insights into its seismic potential

open access: yesGeologica Acta, 2020
The geometry and kinematics of active faults have a significant impact on their seismic potential. In this work, a structural characterization of the active Baza Fault (central Betic Cordillera, southern Spain) combining surface and subsurface data is ...
I. Medina-Cascales   +3 more
doaj   +3 more sources

A New Perspective on Fault Geometry and Slip Distribution of the 2009 Dachaidan Mw 6.3 Earthquake from InSAR Observations

open access: yesSensors, 2015
On 28 August 2009, the northern margin of the Qaidam basin in the Tibet Plateau was ruptured by an Mw 6.3 earthquake. This study utilizes the Envisat ASAR images from descending Track 319 and ascending Track 455 for capturing the coseismic deformation ...
Yang Liu   +3 more
doaj   +1 more source

Structurally Controlled Landscape Evolution in Kula Badlands, Western Turkey

open access: yesGeosciences, 2022
Badlands are extensively eroded landscapes consisting of weakly consolidated deposits within highly dense drainage systems. Their controlling and shaping factors can differ in relation to various internal and external conditions and processes that are ...
Selçuk Aksay   +5 more
doaj   +1 more source

Insights on the dip of fault zones in Southern California from modeling of seismicity with anisotropic point processes

open access: yesSeismica
Accurate models of fault zone geometry are important for scientific and hazard applications. While seismicity can provide high-resolution point measurements of fault geometry, extrapolating these measurements to volumes may involve making strong ...
Zachary Ross
doaj   +1 more source

The Influence of Satellite Configuration and Fault Duration Time on the Performance of Fault Detection in GNSS/INS Integration

open access: yesSensors, 2019
For the integration of global navigation satellite system (GNSS) and inertial navigation system (INS), real-time and accurate fault detection is essential to enhance the reliability and precision of the system.
Chuang Zhang   +4 more
doaj   +1 more source

Faults as Volumetric Weak Zones in Reservoir-Scale Hydro-Mechanical Finite Element Models—A Comparison Based on Grid Geometry, Mesh Resolution and Fault Dip

open access: yesEnergies, 2020
An appropriate representation of faults is fundamental for hydro-mechanical reservoir models to obtain robust quantitative insights into the spatial distribution of stress, strain and pore pressure.
Torben Treffeisen, Andreas Henk
doaj   +1 more source

Fault rock evolution and fluid flow in sedimentary basins [PDF]

open access: yes, 1989
Structural studies have been undertaken in two extensional fault regimes associated with post-Caledonian basin-forming events in northern Scotland. A combination of detailed mapping and microstructural analysis has revealed the deformation processes and ...
Hippler, Susan Johanna
core   +4 more sources

Effects of fault geometry uncertainty on tsunami inversion: a study based on the 2011 Tohoku earthquake

open access: yesEarth, Planets and Space
Finite-fault inversion of tsunami waveforms requires prior knowledge of fault geometry, which is often subject to considerable uncertainty. Quantifying effects of such uncertainty is essential for evaluating the reliability of inversion results derived ...
Yifan Zhu, Shingo Watada, Chao An
doaj   +1 more source

Fault geometry and earthquake mechanics

open access: yesAnnals of Geophysics, 1994
Earthquake mechanics may be determined by the geometry of a fault system. Slip on a fractal branching fault surface can explain: 1) regeneration of stress irregularities in an earthquake; 2) the concentration of stress drop in an earthquake into ...
D. J. Andrews
doaj   +1 more source

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