LARSE II: A Seismic Profile Through the 1994 Northridge Earthquake Epicentral Region and Central Transverse Ranges

LARSE II：1994 年北岭地震震中地区和中央横断山脉的地震剖面

• 批准号: 9725413
• 负责人: Thomas Henyey
• 金额: $ 12.5万
• 依托单位: University of Southern California
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-12-01 至 1999-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9725413&HistoricalAwards=false
• 关键词: LARSE; II; Seismic; Profile; Through

9725413 Henyey This research involves the completion of a regional seismic profile from Santa Catalina Island in the southern California Continental Borderland to the western Mojave Desert that began as part of LARSE I (Los Angeles Region Seismic Experiment) in 1994. This will fund of the cost of the experiment with the remainder to come from the Southern California Earthquake Center and U.S. Geological Survey. The new profile, LARSE II, crosses the inner continental borderland, Santa Monica Mountains, Northridge earthquake epicentral region, Santa Susana Mountains, and the San Andreas fault. The survey parameters will allow the determination of both the upper mantle and lower crustal structure, as well as the structure and velocities of the mountains and basins. In the first case, the relationship between the subcrustal lithosphere and upper mantle high-velocity anomaly detected by earthquake tomography is of particular interest. The primary crustal targets include the buried Northridge earthquake fault, and the thrust faults beneath the Santa Monica and Santa Susana Mountains, as well as the velocity structure of the San Fernando basin. This research is a component of the National Earthquake Hazard Reduction Program. ***

小行星9725413 这项研究包括完成从加州大陆边界南部的圣卡塔利纳岛到西部莫哈韦沙漠的区域地震剖面，该剖面是1994年作为LARSE I（洛杉矶区域地震实验）的一部分开始的。 这将资助 实验费用的一半来自南加州地震中心和美国地质调查局。 新的剖面，LARSE II，穿越内大陆边界，圣莫尼卡山脉，北岭地震震中区，圣苏珊娜山脉和圣安德烈亚斯断层。 测量参数将有助于确定上地幔和下地壳结构以及山脉和盆地的结构和速度。 在第一种情况下，由地震层析成像检测到的地壳下岩石圈和上地幔高速异常之间的关系特别令人感兴趣。 主要的地壳目标包括北岭地震断层、圣莫尼卡和圣苏珊娜山脉下的逆冲断层以及圣费尔南多盆地的速度结构。 这项研究是国家地震减灾计划的一个组成部分。 ***