Collaborative Research: GEER Post Disaster Reconnaissance

合作研究：GEER 灾后勘察

• 批准号: 1826458
• 负责人: Jonathan Stewart
• 金额: $ 6.22万
• 依托单位: University of California-Los Angeles
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2018
• 资助国家: 美国
• 起止时间: 2018-08-15 至 2023-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1826458&HistoricalAwards=false
• 关键词: Collaborative; Research; GEER; Post; Disaster

Documenting and learning from observations after "extreme events" is central to advancing the state-of-art in multi-hazards infrastructure engineering. Recorded observations serve as benchmarks of the effects of these events, their underlying causative mechanisms, and for validation of design procedures. Capturing key lessons learned from extreme events constitutes an important task for advancing research in geotechnical engineering since many design procedures are based on empirical methods that require continuous re-evaluation as important new case histories emerge. The NSF-sponsored Geotechnical Extreme Events Reconnaissance (GEER) Association organizes and supports the reconnaissance efforts of geotechnical researchers and develops techniques to capture perishable data to learn from these events. The scope of GEER reconnaissance activities includes earthquakes, landslides, and debris flows, and associated impacts such as liquefaction, and fault rupture, building and bridge foundation failures, as well as dam, levee and retaining structure collapses. The primary objectives of GEER include: documenting geotechnical effects of important extreme events to identify important topics in need of research; employing innovative technologies for post-event reconnaissance; and advancing the capabilities of individuals performing research based on field observations. Much of the data generated during extreme events is perishable and therefore must be collected soon after the event. The challenge is to develop the most effective approaches for documenting the results of "full-scale experiments" that often occur with limited advance warning, if any. Since 2015, GEER has successfully documented the geotechnical effects of 18 extreme events, including hurricanes Irma and Harvey, floods in South Carolina, Illinois, and Texas, and earthquakes in Mexico, New Zealand, Equador, Nepal and USA, amongst others. Many GEER efforts have led to follow-on funded projects, reflecting that GEER reconnaissance efforts are identifying important research issues that can lead to advancements in science and engineering. Many of the innovative techniques employed in reconnaissance efforts over the past decade or so, such as the utilization of GoogleEarthTM, GPS devices, remote sensing, and LIDAR, were initiated by GEER members. GEER is well positioned to continue making similar advancements with respect to the use of new technology and data communication and sharing approaches for field reconnaissance. This award provides funds for continuation of GEER activities to enable rapid, responsive geotechnical investigations after natural and human-induced disasters. It is expected that two to four investigations after moderate-sized events will be conducted each year. An important aspect of the work is to leverage the benefits of the recently established NSF NHERI initiative and to enhance the interactions between GEER and the other existing and future elements of the NHERI initiative. In particular, a strong focus to coordinate interactions between GEER and the NSF RAPID facility at the University of Washington has been identified as a priority. To ensure that this important interaction is accomplished, the PI will assume direct responsibility for coordinating these critical activities including development and delivery of training efforts. If a larger event occurs, GEER will recommend submission of a RAPID proposal to NSF by an identified GEER team leader to respond effectively to the event. Unfortunately, extreme events will continue to happen. It would be even more unfortunate if the engineering profession did not capture the perishable data that enables it to understand which design procedures result in good engineering performance and which procedures still need improvement. GEER with its engaged and expert geo-professional participants will continue to help "turn disasters into knowledge".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.

“极端事件”之后的观察记录和学习对于推进多危害基础设施工程中的最先进是至关重要的。 记录的观察结果是这些事件影响的基准，它们的基本原因机制以及验证设计程序。 从极端事件中汲取的关键课程构成了推进岩土工程研究的重要任务，因为许多设计程序都是基于需要连续重新评估的经验方法，因为它是重要的新病例历史。 NSF赞助的岩土技术极限事件侦察协会（GEER）协会组织并支持岩土技术研究人员的侦察工作，并开发技术以捕获可腐烂的数据以从这些事件中学习。 Geer侦察活动的范围包括地震，滑坡和碎屑，以及相关的影响，例如液化，断层破裂，建筑物和桥梁基础失败，以及大坝，堤坝和保留结构崩溃。 Geer的主要目标包括：记录重要极端事件的岩土技术效应，以确定需要研究的重要主题；采用创新技术进行事件后侦察；并促进基于现场观察进行研究的个人的能力。 极端事件期间生成的许多数据都是可腐烂的，因此必须在事件发生后不久收集。 面临的挑战是开发最有效的方法，以记录通常在有限的预警（如果有）的情况下发生的“全尺度实验”结果。 自2015年以来，盖尔（Geer）成功地记录了18种极端事件的岩土工程影响，包括飓风艾尔玛（Irma）和哈维（Harvey），南卡罗来纳州，伊利诺伊州和德克萨斯州的洪水以及墨西哥，新西兰，埃博尔，尼泊尔，尼泊尔和美国等墨西哥的地震。盖尔（Geer）的许多努力都导致了后续资助的项目，反映出盖尔（Geer）侦察工作正在确定可以导致科学和工程发展的重要研究问题。 在过去的十年左右的时间里，侦察工作中使用的许多创新技术，例如Geer成员启动了GoogleArthtm，GPS设备，遥感和激光局的利用。 盖尔（Geer）在使用新技术和数据通信以及用于现场侦察的方法方面继续取得了类似的进步。该奖项为继续进行Geer活动提供了资金，以实现自然和人类引起的灾难后快速，响应式的岩土研究。预计每年将进行中等大小的事件后进行两到四次调查。 这项工作的一个重要方面是利用最近建立的NSF NHERI倡议的好处，并增强Geer与NHERI倡议的其他现有和未来要素之间的互动。 特别是，已确定华盛顿大学的Geer和NSF快速设施之间的相互作用的重点是当务之急。 为了确保完成这一重要互动，PI将承担协调这些关键活动，包括开发和提供培训工作的直接责任。 如果发生更大的事件，Geer将建议通过已确定的Geer团队负责人向NSF提交一项快速提案，以有效地对该事件做出反应。 不幸的是，极端事件将继续发生。 如果工程专业未捕获使其能够了解哪些设计程序导致良好的工程性能以及哪些程序仍然需要改进的可腐烂数据，那将是更不幸的。 盖尔（Geer）具有敬业和专家的地理专业参与者将继续帮助“将灾难变成知识”。该奖项反映了NSF的法定任务，并且使用基金会的知识分子优点和更广泛的影响审查标准，被认为值得通过评估来获得支持。

项目成果

Ground Deformation Data from GEER Investigations of Ridgecrest Earthquake Sequence

• DOI: 10.1785/0220190291
• 发表时间: 2020-07-01
• 期刊: SEISMOLOGICAL RESEARCH LETTERS
• 影响因子: 3.3
• 作者: Brandenberg, Scott J.;Stewart, Jonathan P.;Yi, Zhengxiang
• 通讯作者: Yi, Zhengxiang

Liquefaction and Related Ground Failure from July 2019 Ridgecrest Earthquake Sequence

• DOI: 10.1785/0120200025
• 发表时间: 2020-07
• 期刊: Bulletin of the Seismological Society of America
• 影响因子: 3
• 作者: P. Zimmaro;C. Nweke;Janis L. Hernandez;K. Hudson;M. B. Hudson;Sean K. Ahdi;M. Boggs;C. Davis;C. Goulet;S. Brandenberg;K. Hudnut;J. Stewart

Engineering characteristics of ground motions recorded in the 2019 Ridgecrest Earthquake Sequence

2019年里奇克莱斯特地震序列记录的地震动的工程特征

• DOI: 10.1785/0120200036
• 发表时间: 2020
• 期刊: Bulletin of the Seismological Society of America
• 影响因子: 3
• 作者: Ahdi, SK;Mazzoni, S;Kishida, T;Wang, P;Nweke, CC;Kuehn, NM;Contreras, V;Rowshandel, B;Stewart, JP;Bozorgnia, Y
• 通讯作者: Bozorgnia, Y

Intersectional Impacts of the 2021 Mw 7.2 Nippes, Haiti, Earthquake from Geotechnical and Social Perspectives

从岩土工程和社会角度看 2021 年海地尼普斯 7.2 级地震的交叉影响

• DOI: 10.1785/0120220118
• 发表时间: 2023
• 期刊: Bulletin of the Seismological Society of America
• 影响因子: 3
• 作者: Cabas, Ashly;Lorenzo-Velazquez, Cristina;Ingabire Abayo, Nancy;Ji, Chunyang;Ramirez, Jenny;Garcia, Fernando E.;Pérodin, Joanne;Hwang, Yu-Wei;Dashti, Shideh;Ganapati, Nazife Emel
• 通讯作者: Ganapati, Nazife Emel

The role of site effects on elevated seismic demands and corollary structural damage during the October 30, 2020, M7.0 Samos Island (Aegean Sea) Earthquake

• DOI: 10.1007/s10518-021-01265-z
• 发表时间: 2021-11-09
• 期刊: BULLETIN OF EARTHQUAKE ENGINEERING
• 影响因子: 4.6
• 作者: Cetin, Kemal Onder;Papadimitriou, Achilleas G.;Mylonakis, George
• 通讯作者: Mylonakis, George