Dynamic Modeling of Faulting During Continental Rifting

[9814576] Buck一种新的数值模型使研究人员能够在大陆伸展模式中考虑断层的发育和演化。该模型模拟了一种能够产生近似断层的局部变形的弹塑性粘性介质。模型模拟的结果是一个不断演化的断层系统的发展。研究人员建议研究模型裂谷的半地堑单元的大小和数量，断裂的大小分布和大小断裂的相对伸展，大断裂的作用，以及活动裂谷带随时间的扩大或缩小。他们将把重点放在苏伊士湾裂谷上，那里有广泛的数据库和专业知识。他们还将研究其他裂谷，如东非裂谷、安扎裂谷和瓦伦西亚裂谷，这些裂谷的现有数据记录了裂谷期间的断裂模式。

9814576 Buck A newly-developed numerical model enables the investigators to consider the development and evolution of faults in models of continental extension. The model simulates an elastic-plastic-viscous medium that is capable of developing localized deformation approximating faults. Model simulations result in the development of an evolving system of faults. The investigators propose to examine the size and number of half-graben units across the model rifts, the size distribution of faulting and the relative extension accommodated by large and small faults, the role of large rift-bounding faults, and the widening or narrowing of the active rift zone through time. They will focus on the Gulf of Suez rift for which there is an extensive database and expertise. They will also examine other rifts such as the East African rift, Anza trough, and Valencia trough, where available data document the pattern of faulting during rifting.