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Spatial and temporal variation of LURR and its implication for the tendency of earthquake occurrence in Southern California

机译：LURR的时空变化及其对南加州地震发生趋势的暗示

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摘要

Based on the theory of LURR and its recent development, spatial and temporal variation of Y/Y-c (value of LURR/critical value of LURR) in the Southern California region during the period from 1980 through March, 2001 was studied. According to the previous study on the fault system and stress field in Southern California, we zoned the Southern California region into 11 parts in each of which the stress field is almost uniform. With the time window of one year, time moving step of three months, space window of a circle region with a radius of 100 km and space moving step of 0.25 degree in latitude and longitude direction, the evolution of Y/Y-c were snapshot. The scanning results show that obvious Y/Y-c anomalies occurred before 5/6 of strong earthquakes considered with a magnitude of 6.5 or greater. The critical regions of Y/Y-c are near the epicenters of the strong earthquakes and the Y/Y-c anomalies occur months to years prior to the earthquakes. The tendency of earthquake occurrence in the California region is briefly discussed on the basis of the examination of Y/Y-c.
机译：基于LURR理论及其最新发展，研究了1980年至2001年3月南加州地区的Y / Y-c（LURR值/ LURR临界值）的时空变化。根据先前对南加州断层系统和应力场的研究，我们将南加州地区划分为11个部分，每个部分的应力场几乎是均匀的。以一年的时间窗，三个月的时间步长，半径为100 km的圆形区域的空间窗和经纬度方向的0.25度的空间步长，Y / Y-c的变化为快照。扫描结果表明，在强度为6.5或更高的5/6级强地震之前，出现了明显的Y / Y-c异常。 Y / Y-c的关键区域在强地震的震中附近，Y / Y-c异常发生在地震发生前的几个月到几年。在Y / Y-c检验的基础上，简要讨论了加利福尼亚地区的地震发生趋势。

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