Collaborative Research: RAPID: Deployment of a Nodal Array to Capture Aftershocks of the 2023 Kahramanmaras Earthquake Sequences in Turkey

合作研究：RAPID：部署节点阵列捕获 2023 年土耳其卡赫拉曼马拉斯地震序列的余震

• 批准号: 2322460
• 负责人: Zhigang Peng
• 金额: $ 4.31万
• 依托单位: Georgia Tech Research Corporation
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2023
• 资助国家: 美国
• 起止时间: 2023-04-15 至 2025-03-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2322460&HistoricalAwards=false
• 关键词: Collaborative; Research; RAPID; Deployment; Nodal

Zhigang Peng and Eric Sandvol will install over 100 seismometers in southeastern Turkey to measure aftershocks following the deadly earthquakes of February 6, 2023. The seismometers should detect all aftershocks with magnitudes greater than 1, and over the ten-month deployment around 100,000 are likely to be recorded. It is important that these seismometers be installed and making measurements soon after the major quakes because the number of aftershocks per day decreases over time. The recorded earthquake data will be uploaded to a website and freely shared with other scientists and the interested public. Using these data, Peng, Sandvol, and other scientists can estimate the geometry of all active faults in the region, image properties of the crust in 3D, and develop models to help with forecasting earthquakes. The data will also be used to map out where local soils amplify shaking, so building codes can be improved in these areas. Three U.S. graduate students will go to Turkey to help Peng, Sandvol, and their Turkish collaborators with field work and data analysis.Zhigang Peng and Eric Sandvol propose to deploy seismometers in southeastern Turkey to record aftershocks from the February 6, 2023 M 7.8 and M 7.5 earthquakes. The instruments will include ten broadband seismometers with a high dynamic range, 100 5 Hz SmartSolo three-component seismometers, and six short-period instruments, all from from Earthscope’s RAPID pool. The PIs expect to record about 100,000 aftershocks and the catalogue should be complete down to M = 0.5 to 1. Machine learning and template matching techniques will be applied to the new aftershock catalogue to delineate the geometry of the East Anatolian and Dead Sea faults, the Cyprian Arc, and intraplate faults in this tectonically complex region. These data can also be used to image the crustal velocity structure, using body wave travel time data and surface wave dispersions analysis from large aftershocks and ambient noise. Data from nodal instruments will also be used to quantify site amplification for a range of frequencies. This project will strengthen ties between US and Turkish scientists at TUBITAK. Three graduate students from the PIs' institutions will participate in the fieldwork and gain valuable training, as well as collaboration experience with Turkish scientists and students. Following the NSF RAPID data policy, all of the data will be uploaded to Earthscope Inc.’s Data Management Center (DMC).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.

彭志刚和埃里克·桑德沃尔将在土耳其东南部安装 100 多个地震仪，以测量 2023 年 2 月 6 日致命地震后的余震。地震仪应检测到所有震级大于 1 的余震，在十个月的部署中可能会检测到约 100,000 次余震。重要的是，在大地震发生后立即安装这些地震仪并进行测量，因为余震的次数很多。每天记录的地震数据将上传到网站并与其他科学家和感兴趣的公众免费共享，利用这些数据，Peng、Sandvol 和其他科学家可以估计该地区所有活动断层的几何形状，地壳的 3D 图像特性，并开发模型来帮助预测地震。这些数据还将用于绘制当地土壤加剧震动的区域，以便改进这些地区的建筑规范。三名美国研究生将前往土耳其。帮助Peng、Sandvol 及其土耳其合作者进行现场工作和数据分析。彭志刚和 Eric Sandvol 提议在土耳其东南部部署地震仪，以记录 2023 年 2 月 6 日 M 7.8 和 M 7.5 地震的余震。这些仪器将包括 10 个宽带地震仪。具有高动态范围、100 个 5 Hz SmartSolo 三分量地震仪和六个短周期仪器，全部来自Earthscope 的 RAPID 池预计将记录大约 100,000 次余震，目录应完整到 M = 0.5 到 1。机器学习和模板匹配技术将应用于新的余震目录，以描绘东安纳托利亚和死区的几何形状。该构造复杂区域的海洋断层、西普里安弧和板内断层也可用于对地壳速度结构进行成像。来自大型余震和环境噪声的体波传播时间数据和表面波离散分析也将用于量化一系列频率的现场放大。该项目将加强 TUBITAK 的三名毕业生之间的联系。来自 PI 机构的学生将参与实地工作并获得宝贵的培训以及与土耳其科学家和学生的合作经验。遵循 NSF RAPID 数据政策，所有数据都将上传到 Earthscope Inc. 的数据管理。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。