Results 11 to 20 of about 28,833 (197)

Why do aftershocks occur? Relationship between mainshock rupture and aftershock sequence based on highly resolved hypocenter and focal mechanism distributions

Earth, Planets and Space, 2017
In order to clarify the origin of aftershocks, we precisely analyze the hypocenters and focal mechanisms of the aftershocks following the 2000 Western Tottori Earthquake, which occurred in the western part of Japan, using data from dense seismic ...
Yohei Yukutake, Yoshihisa Iio
doaj   +1 more source

基于精定位余震序列的2019年四川长宁MS6.0地震等震线研究

Dizhen xuebao, 2020
采用双差定位法对四川长宁MS6.0主震和24小时内的余震进行重新定位，对重定位的余震进行震级加权的方向分布拟合得到余震区的长轴和中心点，并与Ⅶ度烈度等震线长轴和等震线几何中心进行比较，结果显示：余震区长轴方向与Ⅶ度区长轴方向相近（差值为4°），且长度近似相等（差值为4 km）；余震中心与等震线中心均位于重定位主震的西北方向，且等震线中心相对余震中心向上盘方向偏移约3.0 km。长宁MS6.0地震等震线图呈现出明显的上/下盘效应，上盘高烈度区面积约为下盘的2.1倍，等震线中心也向上盘方向偏移 ...
Zhishuang Xu, Jie Liu, Tongyan Zheng, Jing Ren, Yahui Chen, Xiaoli Li   +5 more
doaj   +1 more source

Modeling afterslip and aftershocks following the 1992 Landers earthquake [PDF]

, 2007
One way to probe the rheology of the lithosphere and fault zones is to analyze the temporal evolution of deformation following a large earthquake. In such a case, the lithosphere responds to a known stress change that can be assessed from earthquake slip
Amelung, Amitrano, Blanpied, Bock, Bodin, Bosl, Bouchez, Chester, Cocks, Cruden, Deng, Dieterich, Dieterich, Dragert, Fialko, Fialko, Goldberg, Gordon, Gross, H. Perfettini, Hardebeck, Hardebeck, Hauksson, Hearn, Hsu, Hsu, Hudnut, J.-P. Avouac, Johnson, King, Lachenbruch, Langbein, Lapusta, Liu, Lockner, Marone, Marone, Massonnet, Miyazaki, Montési, Nelder, Okada, Peltzer, Peltzer, Perfettini, Perfettini, Perfettini, Perfettini, Perfettini, Pollitz, Pollitz, Pollitz, Press, Rice, Rice, Rubin, Rubin, Ruina, Sauber, Sauber, Savage, Savage, Savage, Savage, Scholz, Scholz, Shen, Smith, Stein, Wessel, Zweck   +70 more
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ON PROPER TIME OF THE SOURCE OF A STRONG EARTHQUAKE

Геодинамика и тектонофизика, 2023
The physics of earthquakes was contriubuted to by the concept of proper time of the source of a strong earthquake, which is different from universal (calendar) time. The earlier idea of proper time was implicit and has been considered only in relation to
A. V. Guglielmi, O. D. Zotov, A. D. Zavyalov, B. I. Klain   +3 more
doaj   +1 more source

Is Earthquake Triggering Driven by Small Earthquakes? [PDF]

, 2002
Using a catalog of seismicity for Southern California, we measure how the number of triggered earthquakes increases with the earthquake magnitude. The trade-off between this relation and the distribution of earthquake magnitudes controls the relative ...
Helmstetter, Agnes
core   +4 more sources

Magnitude estimation for early warning applications using the initial part of P waves: A case study on the 2008 Wenchuan sequence [PDF]

, 2009
A period parameter τ_c and an amplitude parameter Pd determined from the very beginning of P wave are important for earthquake early warning (EEW), yet their dependence on source mechanism, focal depth and epicentral distance has not been fully studied ...
Chen, Yong, Kanamori, Hiroo, Ni, Sidao, Wang, Weitao   +3 more
core   +1 more source

A rate-state model for aftershocks triggered by dislocation on a rectangular fault: a review and new insights

Annals of Geophysics, 2006
We compute the static displacement, stress, strain and the Coulomb failure stress produced in an elastic medium by a finite size rectangular fault after its dislocation with uniform stress drop but a non uniform dislocation on the source.
F. Catalli, R. Console
doaj   +1 more source

Analysis of short time-space range seismicity patterns in Italy

Annals of Geophysics, 1997
In our paper we analyze the data base obtained from the observations of the Italian Seismological Network from 1975 to 1994 by using a simple algotithm to determine the rate of occurrence of seismic events condi- tioned by the occurrence of previous ...
M. Imotof, R. Console, F. Di Luccio, M. Murru   +3 more
doaj   +1 more source

Non-Local Seismo-Dynamics: A Fractional Approach

Fractal and Fractional, 2022
This paper consists of a general consideration of a seismic system as a subsystem of another, larger system, exchanging with it by extensive dynamical quantities in a sequential push mode.
Vladimir Uchaikin, Elena Kozhemiakina
doaj   +1 more source

Mainshocks are aftershocks of conditional foreshocks: How do foreshock statistical properties emerge from aftershock laws [PDF]

, 2003
The inverse Omori law for foreshocks discovered in the 1970s states that the rate of earthquakes prior to a mainshock increases on average as a power law ~ 1/(t_c-t)^p' of the time to the mainshock occurring at t_c.
Abercrombie, Agnew, Agnès Helmstetter, Aki, Berg, Bowman, Bufe, Cagnetti, Console, Davis, Didier Sornette, Dodge, Enescu, Felzer, Gabrielov, Gabrielov, Gross, Guo, Hainzl, Helmstetter, Helmstetter, Huang, Ikegami, Imoto, Jaumé, Jean-Robert Grasso, Jones, Jones, Kagan, Kagan, Kagan, Kagan, Kagan, Keilis-Borok, Keilis-Borok, Keilis-Borok, Kisslinger, Kisslinger, Knopoff, Li, Lindh, Ma, Maeda, Michael, Mogi, Mogi, Molchan, Molchan, Molchan, Molchan, Narteau, Ogata, Ogata, Ogata, Omori, Omori, Page, Papazachos, Papazachos, Papazachos, Papazachos, Pelletier, Reasenberg, Reasenberg, Reasenberg, Rotwain, Sammis, Scholz, Shaw, Smith, Smith, Sornette, Sornette, Sornette, Sornette, Stephens, Suyehiro, Tajima, Utsu, von Seggern, Wu, Wyss, Yamanaka, Yamashina, Yamashita, Yamashita, Yamashita, Zhang, Zöller   +88 more
core   +5 more sources