Center Operations: The Coupled Evolution of Earthquakes, Faults, and Geohazards of the San Andreas Fault System

中心运作：圣安德烈亚斯断层系统地震、断层和地质灾害的耦合演化

• 批准号: 2225216
• 负责人: Yehuda Ben-Zion
• 金额: $ 609.01万
• 依托单位: University of Southern California
• 依托单位国家: 美国
• 项目类别: Cooperative Agreement
• 财政年份: 2023
• 资助国家: 美国
• 起止时间: 2023-10-01 至 2026-09-30
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2225216&HistoricalAwards=false
• 关键词: Center; Operations; Coupled; Evolution; Earthquakes

The rapidly deforming Pacific-North America plate boundary in California contains an evolving network of hundreds of active faults organized around the main San Andreas Fault. Many of these faults have dimensions large enough to generate hazardous earthquakes. The San Andreas fault system has an excellent field access that allows detailed studies of properties and dynamics of earthquakes and faulting processes. The Statewide California Earthquake Center (SCEC) is a multi-disciplinary collaboration that enables the development of system-level models of earthquakes and their hazards. The Center advances the frontiers of earthquake research and hazard analysis, and related STEM education and engagement, through five Major Activities: (1) System Science Research, (2) Research Computing, (3) Community Engagement (4) Workforce Development, and (5) Collaboration Planning and Program Evaluation. The focus of this Geohazard Center on coupled evolution of earthquakes and faults facilitates the development of quantitative relations between diverse features that can be used for validation and improved hazard assessment. Advanced research computing for building and testing software and models is used to validate results, improve uncertainty estimates, and assess the efficacy of research activities toward improving earthquake science and impacts on society. This project is co-funded by the Directorate for Geosciences to support AI/ML advancement in the Geosciences.The Center aims to identify emergent phenomena and future behavior of earthquakes and faults using the San Andreas plate-boundary system as a natural laboratory. The research addresses five key questions on i) the loading of faults, ii) the response of fault and crustal materials to loading, iii) the evolution of the active fault network, iv) how the evolving properties affect ongoing deformation and ground motion, and v) the forecasting of strong ground motion and large earthquakes. Addressing these questions could revolutionize earthquake science and hazard estimation. The Center’s shared research computing activities and community models provide unique pathways for physics-based modeling of earthquakes and the ground motions they generate. SCEC interacts with federal and state agencies to support seismic risk reduction and promote community resilience. The Center’s working groups, workshops, field activities, and annual meetings enable a diverse group of scientists to interact over sustained periods, building deep scientific collaborations and interpersonal networks. In addition, the Center promotes intellectual exchange and amplify the support for students and early-career scientists, while broadening their participation in STEM fields. Conducting the research, community engagement and education activities within the organizational structure of SCEC facilitates productive activities that often lead to a larger impact than the sum of individual parts.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

加利福尼亚州快速变形的太平洋-北美板块边界包含一个不断演变的网络，该网络由数百个活动断层组成，这些断层围绕主要的圣安德烈亚斯断层组织起来。许多断层的尺寸足以引发危险的地震。圣安德烈亚斯断层系统具有良好的现场访问能力，可以对地震和断层过程的特性和动力学进行详细研究。全州加州地震中心 (SCEC) 是一个多学科合作机构，致力于开发地震及其危害的系统级模型。该中心通过五项主要活动推进地震研究和灾害分析以及相关 STEM 教育和参与的前沿：(1) 系统科学研究，(2) 研究计算，(3) 社区参与，(4) 劳动力发展，以及 (5) 合作规划和项目评估。该地质灾害中心的重点是地震和断层的耦合演化，促进了不同特征之间定量关系的发展，可用于验证和改进灾害评估。用于构建和测试软件和模型的高级研究计算用于验证结果、改进不确定性估计并评估研究活动对改进地震科学及其对社会影响的有效性。该项目由地球科学理事会共同资助，以支持地球科学领域人工智能/机器学习的进步。该中心旨在利用圣安地列斯板块边界系统作为天然实验室，识别地震和断层的突发现象和未来行为。该研究解决了五个关键问题：i) 断层载荷；ii) 断层和地壳物质对载荷的响应；iii) 活动断层网络的演化；iv) 演化特性如何影响持续变形和地震动；v) 强地震动和大地震的预测。解决这些问题可能会彻底改变地震科学和灾害评估。该中心的共享研究计算活动和社区模型为基于物理的地震及其产生的地面运动建模提供了独特的途径。 SCEC 与联邦和州机构互动，支持减少地震风险并提高社区复原力。该中心的工作组、研讨会、实地活动和年度会议使不同的科学家群体能够持续互动，建立深入的科学合作和人际网络。此外，该中心还促进知识交流，加大对学生和早期职业科学家的支持，同时扩大他们对 STEM 领域的参与。在 SCEC 的组织结构内开展研究、社区参与和教育活动可促进富有成效的活动，这些活动往往会产生比各个部分总和更大的影响。该奖项反映了 NSF 的法定使命，并通过使用基金会的智力价值和更广泛的影响审查标准进行评估，被认为值得支持。