Pregled bibliografske jedinice broj: 1266591
Strength in Numbers: The Tail End of Typhoon Songda Combines with Local Cyclones to Generate Extreme Sea Level Oscillations on the British Columbia and Washington Coasts during Mid-October 2016
Strength in Numbers: The Tail End of Typhoon Songda Combines with Local Cyclones to Generate Extreme Sea Level Oscillations on the British Columbia and Washington Coasts during Mid-October 2016 // Journal of Physical Oceanography, 53 (2023), 1; 131-155 doi:10.1175/jpo-d-22-0096.1 (međunarodna recenzija, članak, znanstveni)
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Naslov
Strength in Numbers: The Tail End of Typhoon
Songda Combines with Local Cyclones to Generate
Extreme Sea Level Oscillations on the British
Columbia and Washington Coasts during Mid-October
2016
Autori
Rabinovich, Alexander B. ; Šepić, Jadranka ; Thomson, Richard E.
Izvornik
Journal of Physical Oceanography (0022-3670) 53
(2023), 1;
131-155
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni
Ključne riječi
Extratropical cyclones ; Sea level ; Storm surges ; Tropical cyclones ; Ocean models
Sažetak
From 12 to 16 October 2016, a series of three major low pressure systems, including the tail end of Typhoon Songda, crossed the coasts of British Columbia (BC) and the state of Washington (WA). Songda was generated on 2 October and, after traveling northward along the coast of Japan, turned eastward toward North America. Once there, it merged with two extratropical cyclones moving along the coast of Vancouver Island. The combined lows generated pronounced storm surges, seiches, and infragravity waves off southern BC and northern WA. Here, we examine the event in terms of sea levels measured by tide gauges and offshore bottom pressure recorders, together with reanalysis data, and high-resolution air pressure and wind measurements from 182 meteorological stations. Surge heights during the event typically exceeded 80 cm, with maximum heights of over 100 cm observed at La Push (WA) and New Westminster (BC). At Tofino, on the west coast of Vancouver Island, there was a sharp 40-cm increase in sea level on 14 October in response to a marked air pressure disturbance ; slightly lower sea level peaks were also observed at other outer coast locations. In all cases, the sea level response was 1.5–2.5 times as great as that expected from the inverted barometer effect, consistent with local topographic amplification. The sea level oscillations at Tofino had the form of a forced solitary wave (“meteorological tsunami, ” or meteotsunami), whereas those on the southwestern shelf off Vancouver Island are well described by classical standing-wave theory. A numerical model closely reproduces the observed meteotsunami peaks and standing-wave oscillations.
Izvorni jezik
Engleski
Znanstvena područja
Geofizika
POVEZANOST RADA
Projekti:
--IP-2019-04-5875 - Snaga i varijabilnost ekstremnih razina Jadranskog mora u sadašnjoj i budućoj klimi (StVar-Adri) (Šepić, Jadranka) ( CroRIS)
EK-H2020-853045 - Procjena doprinosa oscilacija razine mora perioda kraćeg od jednog sata ukupnim ekstremima razine mora u promjenjivim klimatskim uvjetima (SHExtreme) (Šepić, Jadranka, EK - ERC-2019-STG) ( CroRIS)
Ustanove:
Prirodoslovno-matematički fakultet, Split
Profili:
Jadranka Šepić
(autor)
Citiraj ovu publikaciju:
Časopis indeksira:
- Current Contents Connect (CCC)
- Web of Science Core Collection (WoSCC)
- Science Citation Index Expanded (SCI-EXP)
- SCI-EXP, SSCI i/ili A&HCI
- Scopus
