Results 11 to 20 of about 28,952 (217)
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 +5 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 +3 more
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Complex networks of earthquakes and aftershocks [PDF]
, 2004 We invoke a metric to quantify the correlation between any two earthquakes. This provides a simple and straightforward alternative to using space-time windows to detect aftershock sequences and obviates the need to distinguish main shocks from ...
Baiesi, Marco, Paczuski, Maya
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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
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Properties of Foreshocks and Aftershocks of the Non-Conservative SOC Olami-Feder-Christensen Model: Triggered or Critical Earthquakes? [PDF]
, 2003 Following Hergarten and Neugebauer [2002] who discovered aftershock and foreshock sequences in the Olami-Feder-Christensen (OFC) discrete block-spring earthquake model, we investigate to what degree the simple toppling mechanism of this model is ...
A. Helmstetter +23 more
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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
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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 +3 more
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Geosciences, 2022 A strong, shallow earthquake occurred near Heraklion (Crete, Greece) on 27 September 2021. The earthquake produced significant ground deformation in the vicinity of Arkalochori village but without any evidence for surface ruptures of primary origin.
Athanassios Ganas +11 more
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Earthquake Productivity Law in a Wide Magnitude Range
Frontiers in Earth Science, 2022 Earthquakes are usually followed by aftershocks. The number of aftershocks—the so-called productivity—depends on the magnitude of the earthquake. In seismic modeling it is usually assumed that the number of aftershocks is approximately the same for ...
Peter Shebalin +3 more
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Relation between stress heterogeneity and aftershock rate in the rate-and-state model [PDF]
, 2006 We estimate the rate of aftershocks triggered by a heterogeneous stress change, using the rate-and-state model of Dieterich [1994].We show that an exponential stress distribution Pt(au) ~exp(-tautau_0) gives an Omori law decay of aftershocks with time ~1/
Agnès Helmstetter +31 more
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