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多台地震仪，以测量2023年2月6日致命地震后的余震。地震仪应该能探测到所有震级大于1级的余震，在十个月的部署中，可能会记录到大约10万次。重要的是，这些地震仪必须在大地震发生后不久安装并进行测量，因为每天的余震次数会随着时间的推移而减少。记录的地震数据将被上传到一个网站上，并与其他科学家和感兴趣的公众免费分享。利用这些数据，彭、桑德沃尔和其他科学家可以估计该地区所有活动断层的几何形状，以3D方式拍摄地壳属性的图像，并开发有助于预测地震的模型。这些数据还将被用来绘制出当地土壤振动放大的地方，因此这些地区的建筑法规可以得到改善。三名美国研究生将前往土耳其，帮助彭、桑德沃尔和他们的土耳其同事进行实地工作和数据分析。彭志刚和埃里克·桑德沃尔提议在土耳其东南部部署地震仪，记录2023年2月6日7.8级和7.5级地震的余震。这些仪器将包括10台高动态范围的宽带地震仪、100台5赫兹SmartSolo三分量地震仪和6台短周期仪器，所有这些仪器都来自地球望远镜的快速池。PIS预计将记录约100,000次余震，目录应完整到M=0.5比1。新的余震目录将应用机器学习和模板匹配技术，以描绘这个构造复杂区域的东安纳托利亚和死海断层、塞浦路斯弧和板内断层的几何形状。这些数据还可以利用体波走时数据和来自大余震和环境噪声的面波频散分析来成像地壳速度结构。来自节点仪器的数据也将被用来量化一定频率范围内的站点放大。该项目将加强美国和土耳其在TUBITAK的科学家之间的联系。来自私人投资机构的三名研究生将参加实地考察工作，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。根据美国国家科学基金会的快速数据政策，所有数据将被上传到地球镜公司的S数据管理中心(DMC)。这一奖项反映了美国国家科学基金会的法定使命，通过使用基金会的智力优势和更广泛的影响审查标准进行评估，被认为值得支持。