气候变化领域集成服务门户(CCPortal): The 6–7 July 2010 meteotsunami along the coast of Portugal: insights from data analysis and numerical modelling

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DOI	10.1007/s11069-020-04335-8
	The 6–7 July 2010 meteotsunami along the coast of Portugal: insights from data analysis and numerical modelling
	Kim J.; Omira R.
发表日期	2021
ISSN	0921030X
起始页码	1397
结束页码	1419
卷号	106 期号:2
英文摘要	On 6 and 7 July 2010, uncommon sea waves were observed along the coast of Portugal. The Portuguese tide gauge network recorded the sea-level signals showing tsunami-like waves of heights varying from 0.14 to 0.6 m (crest-to-trough) and of periods in the range of 30 to 60 min. Analysis of both oceanic and atmospheric data revealed the occurrence of a meteotsunami in the night of July 6th that propagated from Lagos, south, up to Viana, north. Here, we present the first investigation of the 2010 meteotsunami that struck the coast of Portugal. We use the atmospheric pressure data to force the sea surface and numerically generate the 2010 meteotsunami. We then simulate the 2010 meteotsunami propagation over high-resolution bathymetric models using a validated nonlinear shallow water code. The comparison of the simulated waveforms with the records shows satisfactory agreement of wave heights and periods in most stations. Taking the 2010 event as a reference of meteotsunamis along the Portuguese coast, we further provide an insight into the meteotsunami hazard posed by events propagating from south to north of the country. This is done by considering a 2D Gaussian-shape pressure disturbance that propagates along the shelf under varying conditions of speed and incident angle. This allows identifying “hot spots” on the coast of Portugal where the focus of meteotsunami energy is favourable. Our results suggest that meteotsunamis present a real threat on the highly occupied Portuguese coast and therefore should be considered in tsunami hazard and forecasting strategies of the NE Atlantic countries. © 2020, Springer Nature B.V.
关键词	2010 event Hazard assessment Meteotsunami Numerical modelling Portugal
英文关键词	computer simulation; data set; forecasting method; hazard assessment; numerical model; tide gauge
语种	英语
来源期刊	Natural Hazards
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/206328
作者单位	Instituto Português Do Mar E da Atmosfera, IPMA, Rua C Do Aeroporto, Lisbon, Portugal; Instituto Dom Luiz – IDL, Faculdade de Ciências da Universidade de Lisboa, Lisbon, Portugal
推荐引用方式 GB/T 7714	Kim J.,Omira R.. The 6–7 July 2010 meteotsunami along the coast of Portugal: insights from data analysis and numerical modelling[J],2021,106(2).
APA	Kim J.,&Omira R..(2021).The 6–7 July 2010 meteotsunami along the coast of Portugal: insights from data analysis and numerical modelling.Natural Hazards,106(2).
MLA	Kim J.,et al."The 6–7 July 2010 meteotsunami along the coast of Portugal: insights from data analysis and numerical modelling".Natural Hazards 106.2(2021).