Abstract To fully understand tsunami hazards along Canada’s Pacific coast we must consider all potential sources including local and region-wide earthquakes, volcanic activity, slope failure events and bolide impacts. Furthermore, as climate changes, future extreme meteorological conditions will exacerbate slope failures on steep and over-steepened slopes, and potentially augment the magnitude and frequency of earthquake-generated tsunamis. There have been numerous reviews of the geological records of palaeotsunamis along the Cascadia margin, but as yet there has been no attempt made to pull together all data related to palaeotsunamis along the Pacific coast of Canada. We summarise all geological data related to palaeotsunamis reported in the region, all relevant non-geological data, and other information concerning potential tsunamigenic sources. Evidence for between 10 and 22 palaeotsunamis (prior to European arrival) have been documented, with the Cascadia Subduction Zone Y event (AD1700) being the most widely recognised. Geological, archaeological and anthropological data all indicate a complex, multi-sourced, prehistory of seismic/tsunami activity that is poorly understood. A clustering of potential activity off the SE coast of Vancouver Island suggests that we should also attempt to better understand locally generated events along Canada’s Pacific coast.

中文翻译：

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加拿大太平洋沿岸的古海啸

摘要 为了充分了解加拿大太平洋沿岸的海啸灾害，我们必须考虑所有潜在的来源，包括当地和区域范围的地震、火山活动、斜坡崩塌事件和火流星撞击。此外，随着气候变化，未来的极端气象条件将加剧陡峭和过陡斜坡上的斜坡失稳，并可能增加地震引发海啸的强度和频率。对沿 Cascadia 边缘的古海啸地质记录进行了大量审查，但尚未尝试将所有与加拿大太平洋沿岸的古海啸相关的数据汇总在一起。我们总结了该地区报告的与古海啸有关的所有地质数据、所有相关的非地质数据以及有关潜在海啸源的其他信息。已经记录了 10 到 22 次古海啸（在欧洲到达之前）的证据，其中最广为人知的是卡斯卡迪亚俯冲带 Y 事件（AD1700）。地质、考古和人类学数据都表明，人们对地震/海啸活动的复杂、多源、史前史知之甚少。温哥华岛东南海岸附近潜在活动的聚集表明，我们还应该尝试更好地了解加拿大太平洋沿岸当地产生的事件。