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

小行星9405552 本研究旨在确定与中国四川鲜水河断裂带有关的历史和现代地表破裂的规模、范围和时间。 1990年9月在成都举行的一次会议上，美国和中国科学家报告了他们的初步工作，并在随后的文献中指出，有可能记录与最近破裂有关的滑动的年龄、分布和大小，以检验断层行为的假设。 在许多地区保存了多处断裂的极好地貌证据，中国科学家描述的海沟以及1990年9月期间短暂访问的一个海沟包含了事件发生时间和规模的良好微地层证据。 这项研究将增加到非常有限的数据集的大型走滑破裂，使我们能够更好地了解如何“特色”破裂的大断层真的。 这种断层行为的经验观察对于预测工作和理解破裂过程的基本物理学是至关重要的。 这项研究是美国-中华人民共和国地震研究议定书和国家防震减灾计划。 ***

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. ***