Paleoseismology of the Xianshuihe Fault, Sichuan Province, People's Republic of China

9405552欢迎本研究旨在确定与四川鲜水河断裂有关的历史和现代地表破裂的大小、范围和时间，中国。1990年9月，美国和中国的科学家在成都的一次会议上报告了初步工作，并在随后的文献中指出，有可能记录与最近破裂相关的滑动的年龄、分布和大小，以检验断层行为的假设。许多地区保存着多个断裂的极佳地貌证据，中国科学家描述的海沟和1990年9月短暂访问过的一个海沟包含了很好的微地层学证据，可以证明事件的时间和规模。这项研究将增加关于大型走滑破裂的极其有限的数据集，以便我们能够更好地了解大型断层上的破裂到底有多“特征”。这种对断层行为的经验性观察对于预测工作和理解破裂过程的潜在物理学至关重要。这项研究是《美国-中华人民共和国地震研究议定书》和《国家减少地震灾害计划》的组成部分。***

9405552 Weldon This research is to determine the size, extent, and timing of historic and recent surface ruptures associated with the Xianshuihe Fault in Sichuan Province, China. Preliminary work by U.S. and Chinese scientists reported at a conference in Chengdu, September 1990, and in the subsequent literature, indicate that it would be possible to document the ages, distribution, and magnitude of slip associated with recent ruptures to test the hypotheses of fault behavior. Excellent geomorphic evidence for multiple ruptures is preserved in many areas, and trenches described by Chinese scientists, and one briefly visited during September 1990, contain good microstratigraphic evidence for the timing and size of events. This study will add to the extremely limited data set for large strike-slip ruptures so that we can better understand how "characteristic" ruptures on large faults really are. Such empirical observations of fault behavior are critical for prediction efforts and for understanding the underlying physics of rupture processes. This research is a component of the U.S.-P.R.C Protocol on Earthquake Studies and the National Earthquake Hazard Reduction Program. ***