Real-time ground-motion tools for seismic hazard management

用于地震灾害管理的实时地面运动工具

• 批准号: 412216-2011
• 负责人: Atkinson, Gail
• 金额: $ 9.66万
• 依托单位: University of Western Ontario
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=573434
• 关键词: Real; time; ground; motion; tools

There is a need for rapid access to information on earthquake ground shaking and its potential effects immediately after the occurrence of any significant earthquake that is felt at Ontario's nuclear power plants. This need has been brought to public awareness by the devastating 2011 M9 Tohoku Japan earthquake and, to a much lesser extent, by moderate regional earthquakes in eastern Canada, such as the 2010 M5 earthquake near Ottawa. Nuclear utilities need to be able to determine the motions that a plant has experienced within minutes of the earthquake's occurrence, so that appropriate steps can be taken to assess the situation and determine what action, if any, is required. In the event of very strong shaking the plant would shut down automatically. However, in the event of "felt shaking", the utility must be able to determine how the level of shaking compares to the design basis and capacity of the plant and assess whether a shutdown for inspection is required. It is important to avoid unnecessary shutdowns, because a shutdown, inspection and restart costs millions of dollars. It is also important to have this information quickly so that the utility can provide timely information to the public and regulatory authorities. In this project, we take advantage of the real-time seismographic data provided by the Southern Ontario Seismographic Network, operated for Ontario Power Generation (OPG) by the University of Western Ontario, to develop real-time data tools for earthquake hazard management. We will develop web-based algorithms that allow OPG to obtain processed and instrument-corrected evaluations of the shaking at Pickering, Darlington and Bruce, Ontario within minutes of the occurrence of any regional earthquakes strong enough to be felt (about M3 and greater). Shaking estimates and potential effects throughout southern Ontario will also be mapped and made available via a web interface to inform other users, including other businesses and emergency management agencies. The data products will be integrated into rapid analysis procedures to aid in the management of seismic hazards in Ontario.

在安大略省核电站发生任何重大地震后，需要立即快速获取有关地震地面震动及其潜在影响的信息。 2011 年日本东北地区发生的毁灭性 M9 级地震以及加拿大东部的中度区域性地震（如 2010 年渥太华附近的 5 级地震）使公众认识到了这一需求。 核设施需要能够确定核电站在地震发生后几分钟内经历的运动，以便采取适当的措施来评估情况并确定需要采取什么行动（如果有）。 如果发生强烈震动，工厂将自动关闭。然而，如果发生“感觉到晃动”，公用事业公司必须能够确定晃动程度与工厂的设计基础和容量相比如何，并评估是否需要停机检查。 避免不必要的停机非常重要，因为停机、检查和重启的成本高达数百万美元。 快速获取这些信息也很重要，以便公用事业公司能够及时向公众和监管机构提供信息。 在这个项目中，我们利用西安大略大学为安大略发电公司（OPG）运营的南安大略地震网络提供的实时地震数据，开发用于地震灾害管理的实时数据工具。 我们将开发基于网络的算法，使 OPG 能够在发生任何强度足以感觉到的区域地震（大约 3 级或更大）的几分钟内，获得对安大略省皮克林、达灵顿和布鲁斯震动的经过处理和仪器校正的评估。整个安大略省南部的震动估计和潜在影响也将被绘制出来，并通过网络界面提供给其他用户，包括其他企业和应急管理机构。 这些数据产品将被整合到快速分析程序中，以帮助管理安大略省的地震灾害。