The Storegga tsunami, dated in Norway to 8150±30 cal. years BP, hit many countries bordering the North Sea. Run-ups of >30 m occurred and 1000s of kilometres of coast were impacted. Whilst recent modelling successfully generated a tsunami wave train, the wave heights and velocities, it under-estimated wave run-ups. Work presented here used luminescence to directly date the Storegga tsunami deposits at the type site of Maryton, Aberdeenshire in Scotland. It also undertook sedimentological characterization to establish provenance, and number and relative power of the tsunami waves. Tsunami model refinement used this to better understand coastal inundation. Luminescence ages successfully date Scottish Storegga tsunami deposits to 8100±250 years. Sedimentology showed that at Montrose, three tsunami waves came from the northeast or east, over-ran pre-existing marine sands and weathered igneous bedrock on the coastal plain. Incorporation of an inundation model predicts well a tsunami impacting on the Montrose Basin in terms of replicate direction and sediment size. However, under-estimation of run-up persisted requiring further consideration of palaeotopography and palaeo-near-shore bathymetry for it to agree with sedimentary evidence. Future model evolution incorporating this will be better able to inform on the hazard risk and potential impacts for future high-magnitude submarine generated tsunami events.

中文翻译：

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详细介绍苏格兰蒙特罗斯斯托雷加海啸的影响

Storegga 海啸，在挪威的日期为 8150±30 cal。多年来，BP 袭击了许多与北海接壤的国家。发生了超过 30 m 的爬升，并影响了 1000 公里的海岸。虽然最近的建模成功地生成了海啸波列、波高和波速，但它低估了波浪爬高。此处展示的工作使用发光直接确定了苏格兰阿伯丁郡马里顿类型地点的 Storegga 海啸沉积物的年代。它还进行了沉积学表征，以确定海啸波的来源、数量和相对功率。海啸模型改进使用它来更好地了解沿海洪水。发光年龄成功地将苏格兰斯托雷加海啸沉积物确定为 8100±250 年。沉积学显示，在蒙特罗斯，三个海啸波来自东北或东部，覆盖了沿海平原上原有的海砂和风化的火成岩基岩。结合淹没模型可以很好地预测海啸在复制方向和沉积物大小方面对蒙特罗斯盆地的影响。然而，对爬升的低估仍然存在，需要进一步考虑古地形和古近岸水深测量，才能与沉积证据一致。纳入这一点的未来模型演变将能够更好地了解未来高强度潜艇产生的海啸事件的危害风险和潜在影响。对爬升的低估仍然存在，需要进一步考虑古地形和古近岸测深，才能与沉积证据相一致。纳入这一点的未来模型演变将能够更好地了解未来高强度潜艇产生的海啸事件的危害风险和潜在影响。对爬升的低估仍然存在，需要进一步考虑古地形和古近岸测深，才能与沉积证据相一致。纳入这一点的未来模型演变将能够更好地了解未来高强度潜艇产生的海啸事件的危害风险和潜在影响。