Collab. Research: RUI: Relative & Absolute Ages of Offset Geomorphic Features Along the Garlock Fault in Pilot Knob Valley

9405490 McGill这项研究合作是为了验证这样一个假设，即地貌特征抵消了在相同次数的地震中形成的相同数量的地震，以及沿同一断层段的特征在不同次数的地震中抵消了不同数量的地震。研究区域将是南加州的加洛克断层。以前，这些假设被用来估计地震的数量，这些地震与沿Garlock断层的特征偏移不同的量有关。然而，从1992年加州兰德斯地震中吸取的教训表明，这些假设是错误的。对加洛克断层的偏移量和年代特征进行更详细的研究，将为“特征地震”的概念提供新的证据，而“特征地震”在过去一直是地震危险性估计的基石。这项研究是国家减少地震危害计划的一个组成部分。＊＊＊

9405490 McGill This research collaboration is to test the hypothesis that geomorphic features offset the same amount formed in the same number of earthquakes, and that features offset different amounts along the same segment of the fault were offset in different numbers of earthquakes. The area of study will be the Garlock Fault in southern California. Previously, these hypotheses were used to estimate the number of earthquakes associated with features offset different amounts along the Garlock fault. However, lessons learned from the 1992 Landers, California earthquake show violations of these hypotheses. A more detailed study of offsets and dating of features along the Garlock fault should provide new evidence relating to the idea of "characteristic earthquakes" which has in the past been a cornerstone of seismic hazard estimation. This research is a component of the National Earthquake Hazard Reduction Program. ***