Fault Type Analysis along the San Andreas Fault Zone: A Numerical Approach

来源 :Journal of Mountain Science | 被引量 : 0次 | 上传用户:yecao126128
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Finite Element (FE) modeling under plane stress condition is used to analyze the fault type variation with depth along and around the San Andreas Fault (SAF) zone. In this simulation elastic rheology was used and was thought justifiable as the variation in depth from 0.5 km to 20 km was considered. Series of calculations were performed with the variation in domain properties. Three types of models were created based on simple geological map of California, namely, 1) single domain model considering whole California as one homogeneous domain, 2) three domains model including the North American plate, Pacific plate, and SAF zone as separate domains, and 3) Four domains model including the three above plus the Garlock Fault zone. Mohr-Coulomb failure criterion and Byerlee’s law were used for the calculation of failure state. All the models were driven by displacement boundary condition imposing the fixed North American plate and Pacific plate motion along N34°W vector up to the northern terminus of SAF and N50°E vector motion for the subducting the Gorda and Juan de Fuca plates. Our simulated results revealed that as the depth increased, the fault types were generally normal, and at shallow depth greater strike slip and some thrust faults were formed. It is concluded that SAF may be terminated as normal fault at depth although the surface expression is clearly strike slip. Finite Element (FE) modeling under plane stress condition is used to analyze the fault type variation with depth along and around the San Andreas Fault (SAF) zone. In this simulation elastic rheology was used and was thought justifiable as the variation in depth from 0.5 Series of calculations were performed with the variation in domain properties. Three types of models were created based on simple geological map of California, namely, 1) single domain model considering whole California as one homogeneous domain, 2) Three domains model including the North American plate, Pacific plate, and SAF zone as separate domains, and 3) Four domains model including the three above plus the Garlock Fault zone. Mohr-Coulomb failure criterion and Byerlee’s law were used for the calculation of failure all the models were driven by displacement boundary condition imposing the fixed North American plate and Pacific plate motion along N34 ° W vector up to the northern t erminus of SAF and N50 ° E vector motion for the subducting the Gorda and Juan de Fuca plates. Our simulated results revealed that as the depth increased, the fault types were generally normal, and at shallow depth greater strike slip and some thrust faults were formed It is said that SAF may be terminated as normal fault at depth although the surface expression is clearly strike slip.
其他文献
性格内向、孤僻、不合群的老人,可选择拔河等团队运动项目,增强自身的活力和与人合作的精神。多疑的老人,可选择乒乓球、网球、羽毛球等项目, Introverted, withdrawn and n
上级需求一个干部必须明白这样一个带有普遍性的现象,那就是你的上级最不能接受的就是你怕得罪你的下属,你不得罪就要他来得罪,要你何用?一旦他知道你不敢得罪人,你的 A hig
这世界上能做到内外兼修的女人不是太好找,要不然怎么加上“极品”俩字儿呢。极品女人必须有一个养眼的外形。养眼的概念比较宽泛,不是说你必须得天生丽质、沉鱼落雁、闭月羞
对磷酸三邻甲苯酯(TOCP)染毒鸡进行迷走神经超微结构研究,结果表明:TOCP可显著影响鸡迷走神经,导致神经微丝、微管聚集、滑面内质网增生、扩张和轴突溃变。实验结果提示,TOCP
采用异羟基洋地黄毒苷配基(Digoxigenin,(Dig)-11-dUTP),以随机引物法标记含有恶性疟原虫(P.f.)DNA的重组质粒片段(酶切克隆pPF14),制成pPF14-F-Dig探针。用此探针,以斑点杂
提出了一个基于案例比较信息的多准则群决策分类方法.该方法使用级别高于关系作为决策者的偏好模型.它要求决策者根据自己的偏好预先给出部分方案之间的比较信息.基于这些比
免疫学进展补体缺损的分子生物学……………朱锡华(1)。1循环淋巴细胞回家机制研究进展 ………………………向近敏向连滨(8):141癌症基因治疗的前景”……·范黎 朱锡华(4)t2
近年来的研究结果提示:肿瘤组织内存在着一类内源性凝集素(又称糖结合蛋白或糖受体),与肿瘤的生长和转移有密切关系,可能成为一类新的肿瘤标志物。我们用生物化学、有机合成
为系统研究CTL的杀伤机理,用淋巴细胞性脉络丛脑膜炎病毒(LCMV)腹腔接种于C_(57)BL/6J及C_3H/HeSnJ小鼠,在不同时期收获脾细胞,以低剂量asialo GM1抗血清消除NK细胞,然后进
有人说,厨房是爱情的另一个天堂,不然电影电视里,怎么总会上演种种关于厨房的浪漫故事?《廊桥遗梦》中就有多段关于爱情的经典对白回响在弗朗西丝卡的厨房里。 Some people