Results 151 to 160 of about 910 (180)
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Nucleation of earthquakes and its implication to precursors
Acta Seismologica Sinica, 2000The recent argument about nucleation phase of earthquakes reminds us to completely study the concept of earthquake nucleation. The original meaning of nucleation includes concentration, nucleation and initiation of the eruptive processes. Thus, it is needed to discuss how to exactly translate the word “nucleation” into Chinese in different fields.
Shi-Yu Li +5 more
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Stable Fault Sliding and Earthquake Nucleation
1993The process of earthquake nucleation is studied assuming that faults are rupture surfaces on which sliding is controlled by friction. Earthquakes are assumed to arise through an instability of frictional sliding. Empirical slip laws indicate that, under constant ambient conditions, friction depends on time, slip rate and slip history.
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Energy structures and nucleation effects in earthquakes
Chaos, Solitons & Fractals, 2000zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Utsumi, T., Aizawa, Y.
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State evolution laws and earthquake nucleation
2021<p>In models of faults as elastic continua with a frictional interface, earthquake nucleation is the initiation of a&#160;propagating dynamic fault rupture nucleated by a localized slip instability. A mechanism capturing both&#160;the weakening process leading to nucleation as well as fault healing between events, is a ...
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Earthquake nucleation by transient deformations caused by the M = 7.9 Denali, Alaska, earthquake
Nature, 2004The permanent and dynamic (transient) stress changes inferred to trigger earthquakes are usually orders of magnitude smaller than the stresses relaxed by the earthquakes themselves, implying that triggering occurs on critically stressed faults. Triggered seismicity rate increases may therefore be most likely to occur in areas where loading rates are ...
J, Gomberg +3 more
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Mechanisms of slip nucleation during earthquakes
Earth and Planetary Science Letters, 1999Abstract Slip nucleation during earthquakes is apparently analogous to rupture nucleation within an intact rock sample subjected to triaxial loading. The observations indicate that both these nucleation processes initiate within a relatively small volume and in both the slip propagates unstably along a quasi-planar surface. In both processes a single,
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Earthquake Nucleation and Occurrence – Numerical Investigation
2010The great Wenchuan earthquake caused much damage in Sichuan and neighbor provinces in Western China. As described above, it occurred along the Longmenshan thrust belt that is situated at the transformation site between the NEE-directing compressive stress field of the Qinghai-Tibetan plateau and the NW-directing compressive stress field of the western ...
Huilin Xing, Xiwei Xu
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Impact of multiscale heterogeneities on the nucleation of earthquakes
Earthquake nucleation is traditionally described using cascading or slow pre-slip models. In the latter, nucleation occurs as the sudden transition from quasi-static slip growth to dynamic rupture propagation. This typically occurs when a region of the fault of critical size Lc, often called nucleation length, is sliding.Mathias Lebihain +3 more
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Frictional and viscous effects on the nucleation phase of an earthquake
Journal of Seismology, 2017We study the frictional and viscous effects on earthquake nucleation, especially for the nucleation phase, based on a one-degree-of-freedom spring-slider model with friction and viscosity. The frictional and viscous effects are specified by the characteristic displacement, U c, and viscosity coefficient, η, respectively ...
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Seismological evidence for the nucleation of two strong earthquakes
Izvestiya, Physics of the Solid Earth, 2008The structure of seismicity before the Kronotskii (1997) and Simushir (2006) earthquakes off Russian shores is studied. Different algorithms are applied to the identification of seismic quiescence, seismicity activation, and clustering of seismic events.
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