Results 11 to 20 of about 326,672 (264)

Empirical ground motion prediction

open access: yesAnnals of Geophysics, 1994
New methods of site-specific ground motion prediction in the time and frequency domains are presented. A large earthquake is simulated as a composite (linear combination) of observed small earthquakes (subevents) assuming Aki-Brune functional models of ...
R. J. Archuleta, A. G. Tumarkin
doaj   +1 more source

On the Human Being and Being Human in Jonathan Franzen’s Strong Motion and Freedom [PDF]

open access: yesMaǧallaẗ Kulliyyaẗ Al-ādāb Ǧāmiʿaẗ Būrsaʿīd
A human being is a biosocial being who represents the highest level of development of all organisms on Earth.  Jonathan Franzen is a critical darling, a commercial success, and a magnet for controversy.
Hanaa Ismael Saad Abdul Munim
doaj   +1 more source

熊本MW7.0地震近场地表与井下地震动对比研究

open access: yesDizhen xuebao, 2018
选取日本熊本MW7.0地震断层距小于200 km的82个近场KiK-net台站记录到的三分量记录数据进行基线校正后,获得近场地面运动水平向的峰值加速度PGA、峰值速度PGV及周期为0.2,1,2,3,5和10 s的加速度反应谱数据,并与美国NGA-West2的地震动预测模型相比较,研究熊本地震地表和井下地震动峰值及反应谱的衰减特征,通过比较KiK-net台站地表与井下记录结果,探讨浅层场地放大效应的影响。研究结果表明:① 对于井下观测结果,NGA-West2的地震动模型对PGA和短周期0.2 ...
Cheng Luo, Junju Xie, Zengping Wen
doaj   +1 more source

Potential Advantages of a Strong-motion Velocity Meter over a Strong-motion Accelerometer [PDF]

open access: yesSeismological Research Letters, 2002
This study examines whether it would be better to deploy a velocity-recording strong-motion instrument in place of existing force-balance accelerometers. The proposed instrument would be comparable to a low-gain version of existing broadband seismometers. Using a large suite of Earth signals, we compare such a hypothetical long-period low-gain velocity
Clinton, John F., Heaton, Thomas H.
openaire   +2 more sources

Early detection of earthquake magnitude based on stacked ensemble model

open access: yesJournal of Asian Earth Sciences: X, 2022
A new machine learning model, named, EEWPEnsembleStack has been developed for predicting the magnitude of the earthquake from a few seconds of recorded ground motion after the arrival of the P phase.
Anushka Joshi   +2 more
doaj   +1 more source

Predicted results of weak and strong ground motions at the target site of the blind prediction exercise as steps-2 and -3, Report for the experiments for the 6th international symposium on effects of surface geology on seismic motion

open access: yesEarth, Planets and Space, 2023
In this study, we compared observations and predictions submitted by participants for blind prediction experiments for ground motions using aftershocks, foreshock, and mainshock of the 2016 Kumamoto earthquake sequence, Japan, to improve our ...
Seiji Tsuno   +4 more
doaj   +1 more source

静动力边界转换及其合理性验证方法的研究

open access: yesDizhen xuebao
繁琐复杂的静动力边界转换处理是进行静动力耦合模拟的关键步骤,为了研究黏弹性边界条件下传统静动力边界转换的合理性及其验证方法的适用性,本文首先根据弹性叠加原理提出了一种验证静动力耦合模拟分析中静动力边界转换合理性的方法(参考解法);然后基于有限元软件ABAQUS,并结合自行研发的适用于成层介质的黏弹性边界施加和等效节点力计算程序VBEA2.0,对多土层自由场静动力耦合模型和土-地下结构静动力耦合模型进行了地震反应分析,对参考解法的适用性进行了探究;最后使用本文提出的参考解法 ...
Shengjie Ma   +5 more
doaj   +1 more source

ENGINEERING STRONG-MOTION DATABASE: A GATEWAY TO ACCESS EUROPEAN STRONG MOTION DATA

open access: yes, 2017
The repeated attempts of building unified European strong-motion databases are motivated by the increasing demand of strong motion data, that are one of the primary sources of information used by engineering seismologists and earthquake engineers to predict ground shaking. We describe the Engineering strong-motion database (esm.mi.ingv.it), implemented
Luzi, Lucia   +6 more
openaire   +2 more sources

Source parameters of the July 30, 2006 (Mw 5.5) Gulf of California earthquake and a comparison with other moderate earthquakes in the region

open access: yesGeofísica Internacional, 2010
Un sismo de magnitud MW 5.5 ocurrió en julio 30 de 2006 a las 01:20:52.28 (TCU) en la parte central del golfo de California (GdeC), a 226 km de Topolobampo y al noroeste de la falla transforme entre las cuencas de Guaymas y El Carmen.
H. E. Rodríguez-Lozoya   +4 more
doaj   +1 more source

Discontinuous Dynamic Analysis of a Class of 2-DOF Oscillators With Strong Nonlinearity Under a Periodic Excitation

open access: yesIEEE Access, 2021
Starting from the car suspension system, the nonlinear characteristics of a class of two-degree-of-freedom oscillators with strong nonlinearity under a periodic excitation are discussed by the switching theory of flow in discontinuous dynamical systems ...
Jinjun Fan, Min Gao, Shoulian Chen
doaj   +1 more source

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