Proposal for a new meteotsunami intensity index

C. Lewis, Tim Smyth, Jessica Neumann, H. Cloke
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Abstract

Abstract. Atmospherically generated coastal waves labelled as meteotsunami are known to cause destruction, injury, and fatality due to their rapid onset and unexpected nature. Unlike other coastal hazards such as tsunami, there exist no standardised means of quantifying this phenomenon, which is crucial to understand shoreline impacts and to enable researchers to establish a shared language and framework for meteotsunami analysis and comparison. In this study, we present a new five-level Lewis Meteotsunami Intensity Index (LMTI) trialled in the United Kingdom (UK) but designed for global applicability. A comprehensive dataset of meteotsunami events recorded in the UK was utilised, and the index's effectiveness was evaluated, with intensity level and spatial distribution of meteotsunami occurrence derived. Results revealed a predominant occurrence of Level 2 moderate intensity meteotsunami (69 %) in the UK, with distinct hotspots identified in south-western England and Scotland. Further trial implementation of the LMTI in a global capacity revealed its potential adaptability to other meteotsunami-prone regions, facilitating the comparison of events and promoting standardisation of assessment methodologies.
关于新的海啸强度指数的建议
摘要众所周知,由大气产生的海岸波被称为气象海啸,由于其来势迅猛和突发性,会造成破坏、人员伤亡。与海啸等其他沿海灾害不同,目前还没有量化这种现象的标准化方法,而这对于了解海岸线的影响以及使研究人员能够建立一种用于元海啸分析和比较的共同语言和框架至关重要。在本研究中,我们提出了一个新的五级刘易斯海啸强度指数(LMTI),该指数在英国试用,但设计用于全球范围。研究利用了英国记录的流海啸事件综合数据集,并对该指数的有效性进行了评估,得出了流海啸发生的强度级别和空间分布。结果表明,英国主要发生 2 级中等强度的流海啸(69%),英格兰西南部和苏格兰有明显的热点地区。LMTI 在全球范围内的进一步试运行表明,它具有适应其他流啸多发地区的潜力,有助于事件比较和促进评估方法的标准化。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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