نتایج جستجو برای: rupture directivity

تعداد نتایج: 43457  

Journal: :Journal of Geophysical Research: Solid Earth 2017

Journal: :Zisin (Journal of the Seismological Society of Japan. 2nd ser.) 1983

2010
Ying Tan Don Helmberger

Abstract We have developed a forward modeling technique to retrieve rupture characteristics of small earthquakes (3 < M < 5), including rupture propagation direction, fault dimension, and rupture speed. The technique is based on an empirical Green’s function (EGF) approach, where we use data from collocated smaller events as Green’s functions to study the bigger events. We tend to choose smalle...

2007
J. Ripperger P. M. Mai J.-P. Ampuero

This study investigates near-field ground motion variability due to dynamic rupture models with heterogeneity in the initial shear stress. Ground velocity seismograms are synthesized by convolving the time histories of slip velocity obtained from spontaneous dynamic rupture models with Green’s functions of the medium calculated with a discrete wavenumber / finite element method. Peak ground vel...

Journal: :Journal Of Geophysical Research: Solid Earth 2023

Abstract The rupture behavior of microseismicity in fluid‐injection settings with low fault stresses is generally believed to be controlled by the pore pressure, including a tendency larger induced earthquakes into perturbed volume toward injection well, implying degree predictability. Here, we examine directivity patterns identify planes and directions 21 largest (local magnitudes, 1.3–1.9) re...

Journal: :Journal of Structural and Construction Engineering (Transactions of AIJ) 2006

2005
Jean-Paul Montagner

The large number of high-quality stations from global networks (e.g., IRIS, GEOSCOPE) allows for rapid and robust recovery of source parameters of large earthquakes. We present a self-consistent analysis of surface waves in terms of directivity parameters. The boxcar is often used to recover source parameters but is rarely a faithful representation of an event' s time function. We demonstrate t...

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