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Reconstructing the pattern and depth of flow onshore in a palaeotsunami from associated deposits |
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| Authors: | DE Smith IDL Foster D Long S Shi |
| Institution: | aOxford University Centre for the Environment, South Parks Road, Oxford OX1 3QY, UK bSchool of Business and the Environment, Coventry University, Coventry CV1 5FB, UK cDepartment of Geography, Rhodes University, Grahamstown 6140, South Africa dBritish Geological Survey, West Mains Road, Edinburgh EH9 3LA, UK eResearch and Development Centre, National Laboratory for Information Surveying, Mapping and Remote Sensing, ShenZhen, Guangdong 518051, China |
| Abstract: | The widespread sheets of fine particulate sediment frequently deposited by tsunami constitute valuable evidence from which to reconstruct tsunami inundation. This is illustrated with evidence from three sites near Montrose, in eastern Scotland, U.K., where a horizon of mainly sand, laid down during the Holocene Storegga Slide palaeotsunami of circa 8000 BP is examined. The horizon is remarkably consistent in its distribution, morphology, stratigraphy, and particle size characteristics. These properties allow inferences to be made on the nature of tsunami flow onshore and run-up. It is suggested that estimates can be made of the possible depth of water involved from the characteristics of the sediment, and thus of the extent of inundation involved in the tsunami at these sites. |
| Keywords: | Tsunami Particle size Tsunami run-up Sediment run-up Settling rates |
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