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Meteotsunami-related flooding and drying: numerical modeling of four Adriatic events
Natural Hazards ( IF 3.3 ) Pub Date : 2021-01-03 , DOI: 10.1007/s11069-020-04444-4
Maja Bubalo , Ivica Janeković , Mirko Orlić

Meteotsunamis (localized ocean waves with periods similar to those of tsunamis but caused by meteorological phenomena) have been observed around the globe and are frequently observed in the Adriatic Sea. Numerous studies have focused on numerical modeling of meteotsunamis, but only a few have modeled flooding and drying of the coastal areas that play an important role in risk assessment. In this study, we model four historic meteotsunami events (Vela Luka Bay, June 21, 1978; Široka Bay, August 22, 2007; Mali Lošinj Bay August 15, 2008; Stari Grad Bay February 19, 2010) that occurred in the Adriatic Sea, using ADICRC, a flooding and drying capable ocean numerical model. Comparison of those results with similar simulations that do not use the flooding and drying algorithm was made to determine differences in modeled wave height. Three of the modeled events (Vela Luka, Široka and Mali Lošinj) are more accurately depicted if including the flooding and drying algorithm, suggesting that extreme events can be more realistically modeled than with the more commonly used cut-off depth (i.e., specifying minimum depth larger than expected maximum wave height). Modeling results for the fourth event (Stari Grad) confirm a previous assumption that flooding occurred due to the superposition of a storm surge and a meteotsunami, rather than a meteotsunami alone.



中文翻译:

与气象海啸有关的洪水和干旱:四个亚得里亚海事件的数值模拟

流星海啸(局部海浪,周期类似于海啸,但由气象现象引起)已在全球范围内观察到,并经常在亚得里亚海中观察到。许多研究都集中在对海啸的数值模拟上,但是只有少数几个模拟了在风险评估中发挥重要作用的沿海地区的洪水和干旱。在这项研究中,我们对发生在亚得里亚海的四次历史性海啸事件进行了建模(1978年6月21日,韦拉卢卡湾; 2007年8月22日,席罗卡湾; 2008年8月15日,马里洛辛吉湾; 2010年2月19日,斯塔里格拉德湾) ,使用ADICRC,这是一种具有洪水和干燥能力的海洋数值模型。将这些结果与不使用淹水和干燥算法的类似模拟进行比较,以确定建模波高的差异。如果包括淹没和干燥算法,则可以更准确地描绘出三个建模事件(Vela Luka,Široka和MaliLošinj),这表明与使用更常用的截断深度(即指定最小深度大于预期的最大波高)。第四次事件(Stari Grad)的模型结果证实了先前的假设,即洪水是由于风暴潮和气象海啸的叠加而发生的,而不是仅是气象海啸的叠加。

更新日期:2021-01-03
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