globalchange  > 气候变化与战略
DOI: 10.1007/s11069-020-04462-2
论文题名:
Extreme sea levels at Rapa Nui (Easter Island) during intense atmospheric rivers
作者: Carvajal M.; Winckler P.; Garreaud R.; Igualt F.; Contreras-López M.; Averil P.; Cisternas M.; Gubler A.; Breuer W.A.
刊名: Natural Hazards
ISSN: 0921030X
出版年: 2021
卷: 106, 期:2
起始页码: 1619
结束页码: 1637
语种: 英语
中文关键词: Atmospheric rivers ; Easter Island ; Integrated water vapor ; Meteotsunamis ; Rapa Nui ; Sea level ; Seiches ; Shelf resonance ; Storm surge
英文关键词: atmospheric dynamics ; extreme event ; field survey ; hazard assessment ; photography ; sea level ; sea level change ; seiche ; storm surge ; time series ; tsunami ; vulnerability ; water vapor ; wind wave ; Easter Island ; Pacific Ocean ; Pacific Ocean (Southeast)
英文摘要: In addition to the tsunami hazard posed by distant great earthquakes, Rapa Nui (Easter Island), in the Southeast Pacific Ocean, is exposed to frequent and intense coastal storms. Here, we use sea-level records and field surveys guided by video and photographic footage to show that extreme sea levels at Rapa Nui occur much more frequent than previously thought and thus constitute an unrecognized hazard to the inland’s maritime supply chain. We found that extreme sea-level events, including the two most extreme (March 5th and May 5th, 2020) in our 17-month-long analyzed period (from January 1st, 2019, to May 31st, 2020), resulted from constructive superpositions of seiches on the shelf, storm surges and high tides. By further analyzing time series of atmospheric and wind-generated wave data, we conclude that these extreme sea levels are ultimately driven by the breaking of large waves near the coastline (i.e., wave setup), with lesser contribution of barometric setup and even less of wind setup. We also propose that these large waves were mainly generated from strong, long-lasting, NW winds associated with intense atmospheric rivers (long, narrow regions in the atmosphere that transport abundant water vapor) passing over Rapa Nui. Given that the intensity of atmospheric rivers and sea level are thought to increase as climate changes, a deeper understanding of the relation between meteorological and oceanographic processes at Rapa Nui is strongly needed. © 2021, The Author(s), under exclusive licence to Springer Nature B.V. part of Springer Nature.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/168938
Appears in Collections:气候变化与战略

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作者单位: Programa de Doctorado en Ciencias Geológicas, Facultad de Ciencias Químicas, Universidad de Concepción, Concepción, Chile; Millennium Nucleus the Seismic Cycle along Subduction Zones (CYCLO), Valparaíso, Chile; Escuela de Ingeniería Civil Oceánica, Universidad de Valparaíso, Valparaíso, Chile; Centro de Investigación Para La Gestión Integrada del Riesgo de Desastres (CIGIDEN), Santiago, Chile; Centro de Observación Marino Para Estudios de Riesgos del Ambiente Costero (COSTAR-UV), Valparaíso, Chile; Department of Geophysics and Center for Climate and Resilience Research (CR2), Universidad de Chile, Santiago, Chile; Escuela de Arquitectura y Diseño, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile; Instituto de Geografía, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile; Facultad de Arquitectura y Diseño, Universidad Andrés Bello, Viña del Mar, Chile

Recommended Citation:
Carvajal M.,Winckler P.,Garreaud R.,et al. Extreme sea levels at Rapa Nui (Easter Island) during intense atmospheric rivers[J]. Natural Hazards,2021-01-01,106(2)
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