Slow rupture of frictional interfaces
Slow rupture of frictional interfaces
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DOI：
10.1029/2011gl050554
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发表时间：
2012-02-11
影响因子：
5.2
通讯作者：
Bouchbinder, Eran
中科院分区：
文献类型：
--
作者：
Bar Sinai, Yohai;Brener, Efim A.;Bouchbinder, Eran
摩擦界面的失效及其伴随的时空结构对于广泛的地球物理、物理和工程系统来说是核心。最近的地球物理和实验室观察表明，界面破坏可以介导的缓慢滑动破裂现象，这是不同于普通的，地震般的，快速破裂。这些发现影响了我们对摩擦运动的看法，但缓慢破裂的性质和性质还没有完全理解。我们表明，慢破裂是一个简单的非单调率和状态摩擦定律的内在和强大的属性。它是与一个新的速度尺度c（分钟），确定的摩擦定律，低于稳态破裂不能传播。我们进一步表明，破裂可以发生在一个连续的状态，跨越了很宽的范围内的速度从c（分钟）到弹性波的速度，并预测不同的性质为慢破裂和普通的快破裂。我们的研究结果与最近的高分辨率实验室实验定性一致，并可能提供一个理论框架，了解缓慢破裂现象沿沿着摩擦界面。引文：Bar Sinai，Y.，E. A. Brener和E. Bouchbinder（2012），摩擦界面的缓慢破裂，Geophys。保留信函：39，L03308，doi：10.1029/2011GL050554。
The failure of frictional interfaces and the spatiotemporal structures that accompany it are central to a wide range of geophysical, physical and engineering systems. Recent geophysical and laboratory observations indicated that interfacial failure can be mediated by slow slip rupture phenomena which are distinct from ordinary, earthquake-like, fast rupture. These discoveries have influenced the way we think about frictional motion, yet the nature and properties of slow rupture are not completely understood. We show that slow rupture is an intrinsic and robust property of simple non-monotonic rate-and-state friction laws. It is associated with a new velocity scale c(min), determined by the friction law, below which steady state rupture cannot propagate. We further show that rupture can occur in a continuum of states, spanning a wide range of velocities from c(min) to elastic wave-speeds, and predict different properties for slow rupture and ordinary fast rupture. Our results are qualitatively consistent with recent high-resolution laboratory experiments and may provide a theoretical framework for understanding slow rupture phenomena along frictional interfaces. Citation: Bar Sinai, Y., E. A. Brener, and E. Bouchbinder (2012), Slow rupture of frictional interfaces, Geophys. Res. Lett., 39, L03308, doi:10.1029/2011GL050554.