Results 221 to 230 of about 560,418 (238)
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Journal of South American Earth Sciences, 2021
Abstract In this work we present a review of the current state of knowledge of the active faults in El Salvador and its seismo-tectonic implications. An updated map of active fault traces is combined with the spatial analysis of shallow seismicity, focal mechanisms, recent geodetic GPS velocities, local strain estimations and morpho-tectonic features
Meaza Tsige +14 more
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Abstract In this work we present a review of the current state of knowledge of the active faults in El Salvador and its seismo-tectonic implications. An updated map of active fault traces is combined with the spatial analysis of shallow seismicity, focal mechanisms, recent geodetic GPS velocities, local strain estimations and morpho-tectonic features
Meaza Tsige +14 more
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The Influence of Fault Dip Angle on the Floor Fault Activation
Advanced Materials Research, 2012In order to study the influence of different fault dip angle on fault activation under different mining conditions, the supporting pressure distribution model of corresponding working face is established and the formula of stress on the fault plane is also derived. Combined with the Mohr-Coulomb yield criterion, the essay summarizes the critical factor
Bang Hua Yao +4 more
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Active Fault-Tolerant Control for a Quadrotor with Sensor Faults
Journal of Intelligent & Robotic Systems, 2017An active fault-tolerant control scheme for a quadrotor with velocity sensor faults is presented in this paper. A two-level control scheme is designed to guarantee the quadrotor to track the given trajectory in case of no faults. The control scheme consists of an external-loop Proportion Differentiation (PD) control law and an internal-loop Proportion ...
Liguo Qin +3 more
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Environmental & Engineering Geoscience, 2013
Robert S Yeats Yeats is a thoroughly respected boots-on-the-ground field geologist of the U.S. west coast school, who has matured over a 40 year career into a worldwide assessor of active faults. His first publication listed in Active Faults is dated 1973 and was on the Newport-Inglewood Fault Zone.
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Robert S Yeats Yeats is a thoroughly respected boots-on-the-ground field geologist of the U.S. west coast school, who has matured over a 40 year career into a worldwide assessor of active faults. His first publication listed in Active Faults is dated 1973 and was on the Newport-Inglewood Fault Zone.
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Active Fault Management for Microgrids
IECON 2018 - 44th Annual Conference of the IEEE Industrial Electronics Society, 2018Fault management is critical for efficiently supporting the increasing microgrids' penetration in distribution networks but remains an open problem. No existing ride through methods can ride through symmetrical and asymmetrical faults without increasing the fault current magnitude, meanwhile balancing microgrid power and eliminating double frequency ...
Wenfeng Wan +7 more
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1991
Abstract This chapter traces some of the ideas and concepts leading to the current understanding of the process of faulting and earthquake generation, gives examples of engineering geology investigations contributing to that understanding, describes some engineering projects that have been strongly influenced by the process, and suggests
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Abstract This chapter traces some of the ideas and concepts leading to the current understanding of the process of faulting and earthquake generation, gives examples of engineering geology investigations contributing to that understanding, describes some engineering projects that have been strongly influenced by the process, and suggests
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Colorado Earthquakes and Active Faults
GEO-Volution, 2006Ninety two potentially active faults have been identified in Colorado since the 1960s with many areas of the state still unexamined. Five hundred and seventy Colorado earthquakes have been felt or have had magnitudes of 2.0 or greater between 1870 and 2005. Eighty four earthquakes have equaled or exceeded an MMI Scale of V.
Donald O. Doehring +4 more
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Active incipient fault detection with two simultaneous faults
IFAC Proceedings Volumes, 2009Abstract The problem of detecting small parameter variations in linear uncertain systems due to incipient faults, by injecting an input signal to enhance detection is considered. Unlike previous work where it is usually assumed that there is only one fault, in this paper we allow for two faults which is a natural assumption in the incipient case.
Stephen L. Campbell, Martene Fair
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Active faults in Africa: a review
Tectonophysics, 2004Abstract The active fault database and Map of active faults in Africa, in scale of 1:5,000,000, were compiled according to the ILP Project II-2 “World Map of Major Active Faults”. The data were collected in the Royal Museum of Central Africa, Tervuren, Belgium, and in the Geological Institute, Moscow, where the final edition was carried out.
N.V. Lukina +5 more
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Faults in Determining Nitrogenase Activity
Journal of Agronomy and Crop Science, 2003AbstractThe effects of three treatments performed before the acetylene reduction assay, i.e. shoot removal, shoot removal plus root shaking, and no disturbance (intact plants), and of the length of the incubation period (10, 30 or 60 min) on nitrogenase activity were investigated in pea (Pisum sativumL.).
D. Wright, G. Singh
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