DOI: 10.1007/s11069-020-04203-5
论文题名: The meteorological tsunami of 1 November 2010 in the southern Strait of Georgia: a case study
作者: Rabinovich A.B. ; Šepić J. ; Thomson R.E.
刊名: Natural Hazards
ISSN: 0921030X
出版年: 2021
卷: 106, 期: 2 起始页码: 1503
结束页码: 1544
语种: 英语
中文关键词: Atmospheric pressure
; Juan de Fuca Strait
; Meteorological tsunamis
; Numerical modelling
; Seiches
; Strait of Georgia
; Time series analysis
; Vancouver Island
; Victoria School-Based Weather Station Network
英文关键词: atmospheric pressure
; environmental disturbance
; numerical model
; sea level change
; seiche
; tide gauge
; time series analysis
; topography
; tsunami
; British Columbia
; Canada
; Juan de Fuca Strait
; Strait of Georgia
; Columbia
英文摘要: Tsunami-like sea level oscillations recently recorded by tide gauges located along the coasts of British Columbia (Canada) and Washington State (USA) have been identified as meteorological tsunamis. Globally, such events can create hazardous conditions in coastal areas, including the possible loss of life, and need to be taken into account in any assessment of risk to nearshore infrastructure. On 1 November 2010, a significant meteotsunami occurred in the southern Strait of Georgia, British Columbia. To examine this event, we have used all available sea level and air pressure data, including 1-min records from five Canadian Hydrographic Service and five USA National Oceanic and Atmospheric Administration tide gauges, as well as high-resolution time series from two Ocean Network Canada VENUS bottom pressure recorders and from 132 air pressure sensors within the Victoria School-Based Weather Station Network of southern British Columbia. The oceanic responses to four well-defined atmospheric disturbances (labelled D1–D4) were selected for analysis. Disturbance D3, which propagated toward ~ 100° True (eastward) at a speed of ~ 20 m/s, appears to have been responsible for generating the meteotsunami observed in the southern Strait of Georgia, while disturbance D4 that moved toward ~ 55° True at a speed of 24 m/s appears to have produced the meteotsunami observed in Juan de Fuca Strait that separates Vancouver Island from Washington State. We used the physical parameters derived for the four disturbances to force numerical simulations of the events and compared the results to observations from selected tide gauge sites. The numerical experiments revealed strongly individual sea level responses at each site to changing air pressure disturbance speed, direction and intensity, such that each location has its own set of “site-specific” air pressure characteristics that produce the strongest sea level response. Differences in the local topography and coastline geometry appear to be responsible for the different responses among sites. © 2020, Springer Nature B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/169313
Appears in Collections: 气候变化与战略
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作者单位: Institute of Ocean Sciences, Fisheries and Oceans Canada, Sidney, BC, Canada; P.P. Shirshov Institute of Oceanology, Russian Academy of Sciences, Moscow, Russian Federation; Faculty of Science, University of Split, Split, Croatia
Recommended Citation:
Rabinovich A.B.,Šepić J.,Thomson R.E.. The meteorological tsunami of 1 November 2010 in the southern Strait of Georgia: a case study[J]. Natural Hazards,2021-01-01,106(2)