EAR-PF Late Quaternary slip rates and paleoseismicity of the Sevier Desert Detachment: earthquake hazards of a low-angle normal fault

EAR-PF 塞维尔沙漠支队的晚第四纪滑移率和古地震活动：低角度正断层的地震危害

• 批准号: 1451466
• 负责人: Timothy Stahl
• 金额: $ 8.7万
• 依托单位: Stahl Timothy A
• 依托单位国家: 美国
• 项目类别: Fellowship Award
• 财政年份: 2015
• 资助国家: 美国
• 起止时间: 2015-07-01 至 2017-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1451466&HistoricalAwards=false
• 关键词: EAR; PF; Late; Quaternary; slip

Dr. Timothy Stahl has been awarded an NSF EAR Postdoctoral Fellowship to conduct a research and field-based education program through the University of Michigan. He will investigate the paleoseismicity and seismogenic potential of the Sevier Desert Detachment (SDD)- a low-angle normal fault (LANF) in central Utah. This project aims to (1) establish the long-term slip rates of the SDD; (2) determine the timing and magnitude of past earthquakes on the SDD; (3) model the probability of multi-segment or multi-fault ruptures on the SDD and faults soling into it at depth. Dr. Stahl will use a combination of field mapping, terrestrial laser scanning, cosmogenic surface exposure-age dating, paleoseismic trenching, and numerical modeling to meet the above research aims.This is the first study to examine field evidence for the timing and magnitude of prehistoric earthquakes on a LANF. The research will elucidate the controversial and potentially devastating seismic hazard posed by these faults in the US and worldwide. The fellowship supports the development of field-based, collaborative research projects for undergraduates at the U. Michigan and Snow College, a two-year undergraduate college in central Utah. Dr. Stahl will also lead a one-month field camp for U. Michigan students in New Zealand, the host country of his PhD studies, aimed at broadening knowledge of different tectonic settings around the world and establishing international connections between USA and New Zealand undergraduate students.

蒂莫西·斯塔尔（Timothy Stahl）博士被授予NSF耳朵博士后奖学金，以通过密歇根大学进行研究和现场教育计划。他将调查塞维尔沙漠脱离（SDD）的古s和地震生成潜力 - 犹他州中部的低角度正常断层（LANF）。该项目旨在（1）建立SDD的长期滑动率； （2）确定SDD上过去地震的时机和幅度； （3）对SDD上的多段或多损伤的概率进行建模，并在深度溶于其内的故障。 Stahl博士将结合现场映射，陆地激光扫描，宇宙源性表面暴露年龄，古震震式挖沟和数值建模来满足上述研究的目的。这是第一个研究史上史史上史前史上史前地震的现场证据的研究。这项研究将阐明这些断层在美国和全球范围内带来的有争议的毁灭性地震危害。该奖学金支持在犹他州中部为期两年的本科学院的美国密歇根州和雪学院的本科生的基础，合作研究项目。 Stahl博士还将在其博士学位研究的东道国为新西兰的美国密歇根州学生带领一个月的野外营地，旨在扩大世界各地不同构造环境的知识，并在美国和新西兰本科生之间建立国际联系。