Earthquake Hazards on Canada's Pacific Coast

加拿大太平洋海岸的地震危险

• 批准号: 571215-2021
• 负责人: Bostock, MichaelG
• 金额: $ 21.86万
• 依托单位: University of British Columbia
• 依托单位国家: 加拿大
• 项目类别: Alliance Grants
• 财政年份: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=751255
• 关键词: Earthquake; Hazards; Canada; Pacific; Coast

The single largest region of elevated earthquake hazard in Canada comprises Haida Gwaii, Vancouver Island and the adjacent lower mainland in British Columbia. A population of ~3 million people resides in this region, including communities of 10 First Nations distributed along the coast. The goal of this proposal is to partner academic earthquake researchers with their counterparts at Natural Resources Canada (NRCan) to enable an ambitious 5-year program that exploits our collective expertise, resources and infrastructure to yield fundamental understanding of this earthquake hazard. Realization of this goal is made possible through the National Facility for Seismic Imaging, a $15 M initiative recently funded by the Canada Foundation for Innovation, that hosts 120 state-of-the-art broadband, ocean-bottom seismometers. Using funds from this proposal to support shiptime costs, drop fees and consumables, we will deploy these instruments at 5 targeted and poorly understood segments of the complex plate-tectonic fault system offshore western Canada over a 5-year period. Each fault segment possesses distinct seismic properties and is capable of producing (or has produced) magnitude Mw 7-8+ earthquakes. The research enabled by this academic-NRCan partnership will lead to new scientific insights into the ways plate tectonic forces shape the deformation and evolution of faults offshore BC and accurate assessments of seismic, tsunami and submarine landslide hazards in Canadian Pacific territorial waters. This information will be incorporated in future National Seismic Hazard Models by NRCan through its Public Safety Geoscience program. The National Seismic Hazard Model underpins the National Research Council's National Building Code which communicates seismic risk and resistance design requirements to multiple stakeholders (e.g., emergency management planners, provincial regulators, municipal building inspectors, engineers, contractors, architects, community groups) for the benefit of all Canadians, including those living on the west coast.

加拿大地震危险性最大的单一地区包括海达瓜伊、温哥华岛和邻近的不列颠哥伦比亚省低陆平原。 该地区居住着约 300 万人，其中包括分布在沿海的 10 个原住民社区。该提案的目标是让学术地震研究人员与加拿大自然资源部 (NRCan) 的同行合作，实施一项雄心勃勃的 5 年计划，利用我们的集体专业知识、资源和基础设施，从根本上了解这种地震危害。这一目标的实现是通过国家地震成像设施实现的，这是一项最近由加拿大创新基金会资助的 1500 万美元的计划，拥有 120 个最先进的宽带海底地震仪。利用该提案中的资金来支持运输成本、下降费用和消耗品，我们将在 5 年内将这些仪器部署在加拿大西部近海复杂板块构造断层系统的 5 个有针对性且知之甚少的部分。每个断层段都具有独特的地震特性，并且能够产生（或已经产生）Mw 7-8+ 地震。这项学术界与加拿大国家研究中心合作开展的研究将为板块构造力影响不列颠哥伦比亚省近海断层变形和演化的方式提供新的科学见解，并准确评估加拿大太平洋领海的地震、海啸和海底滑坡灾害。该信息将通过 NRCan 的公共安全地球科学计划纳入未来的国家地震灾害模型中。国家地震灾害模型是国家研究委员会国家建筑规范的基础，该规范向多个利益相关者（例如应急管理规划者、省级监管机构、市政建筑检查员、工程师、承包商、建筑师、社区团体）传达地震风险和抗震设计要求，以获取利益所有加拿大人，包括居住在西海岸的加拿大人。