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.

加拿大最大的一个地震危险区包括海达-格伦登、温哥华岛和邻近的不列颠哥伦比亚省的低地大陆。 该地区约有300万人口，包括沿着海岸分布的10个原住民社区。该提案的目标是将学术地震研究人员与加拿大自然资源部（NRCan）的同行合作，以实现一个雄心勃勃的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灾害。这一目标的实现是通过国家地震成像设施实现的，该设施是加拿大创新基金会最近资助的一项1 500万美元的倡议，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个目标和知之甚少的部分。每个断层段具有不同的地震特性，能够产生（或已经产生）7-8+级地震。通过这种学术-NRCan伙伴关系的研究将导致新的科学见解板块构造力的方式形成的变形和不列颠哥伦比亚省近海断层的演变和地震，海啸和海底滑坡灾害的准确评估在加拿大太平洋领土沃茨。这些信息将通过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。国家地震灾害模型支持国家研究理事会的国家建筑规范，该规范将地震风险和抗震设计要求传达给多个利益相关者（例如，应急管理规划人员、省级监管人员、市政建筑检查员、工程师、承包商、建筑师、社区团体），以造福所有加拿大人，包括生活在西海岸的加拿大人。