Atmospherically induced large amplitude sea-level oscillations on October 29, 2019 at Santa Catarina, Brazil

Araújo, Carlos Eduardo Salles de; Boll, Matias Guilherme; Garbossa, Luis Hamilton Pospissil; Vanz, Argeu; Candella, Rogério Neder

doi:10.1007/s11069-020-04375-0

Cited by 3 publications

(5 citation statements)

References 11 publications

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“…Recently, the tide gauge of Imbituba was adapted to perform measurements with 1-min intervals and redundancy to comply with the recommendations from the IOC for the sea level monitoring facility 24 . This tide gauge registered a meteotsunami event (Araujo et al, 2020), not previously recorded in the region, probably due to the lack of compatible monitoring. A recent partnership between EPAGRI and the Brazilian Sea Observatory (BSO, see below) allowed the validation of a numerical model for the Babitonga Bay, and is enabling the implementation of an operational modeling system for the entire Santa Catarina coast, which can support maritime activities, such as aquaculture and port operations.…”

Section: Santa Catarina Tide Gauges Network (Sctgn)mentioning

confidence: 87%

Coastal Ocean Observing and Modeling Systems in Brazil: Initiatives and Future Perspectives

et al. 2021

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Coastal ocean observing and modeling systems (coastal observatories), connected with regional and global ocean systems, improve the quality of information and forecasts for effective management of safe and sustainable maritime activities. The public availability of systematic and long-term information of the ocean is an engine for the Blue Economy, boosting economic growth, employment, and innovation. An overview of some Brazilian initiatives is presented in this paper, involving universities, private companies, federal and state agencies, covering institutions from south to north of Brazil. Although these initiatives focus mainly on ocean physics, integrated efforts can extend the scope to include biogeochemistry and marine biodiversity, helping to address interdisciplinary problems. Existing initiatives can be connected, and new ones fostered, to fill in the gaps of temporal and spatial coverage of ocean monitoring in the vast oceanic area under Brazilian jurisdiction (nationally referred to as the Blue Amazon, in reference to the similar richness of the Amazon Forest). The alignment among national and regional initiatives, as well as with international programs, can be promoted if coordinated by a national-level organization, maximizing the return of public investment and socioeconomic benefits. In light of international examples, possible future institutional arrangements are discussed, leveraging from existing national public policies and international cooperation that Brazil is taking part. The United Nations Decade of Ocean Science for Sustainable Development is a timely opportunity to encourage an institutional arrangement to support and articulate an integrated network of coastal observatories in Brazil.

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Section: Santa Catarina Tide Gauges Network (Sctgn)mentioning

confidence: 87%

Coastal Ocean Observing and Modeling Systems in Brazil: Initiatives and Future Perspectives

et al. 2021

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“…3.6 Event 6: October 29, 2019-Imbituba, state of Santa Catarina So far, this was certainly the best documented event in Brazil, and it is described in detail by Araujo et al (2020). An intense cyclone in the south of the region (Fig.…”

Section: Event 5: October 16 2016-araranguá State Of Santa Catarinamentioning

confidence: 93%

“…12). A high-resolution representation of the recorded waves at Imbituba is given by Araujo et al (2020).…”

Section: Event 5: October 16 2016-araranguá State Of Santa Catarinamentioning

confidence: 99%

Meteotsunamis in Brazil: an overview of known occurrences from 1977 to 2020

Candella

Araújo

2020

Nat Hazards

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From 1977 to March 2020, eight atmospherically induced tsunami-like events have been observed in Brazil. Six of them occurred in the southern region of the country, where the atmosphere tends to be more unstable due to the passage of low-pressure systems, which often move from the south to the north along the coast. This trajectory combined with the shallow continental shelf in the region can favor the occurrence of resonance and, consequently, the amplification of the waves. Most events resulted only in material losses, sometimes severe, but at least one fatal victim was registered. On the vast majority of the occasions, seven in eight, the tsunami-like waves happened on the open coast, and half of them under bad-weather situations. The sparse tide gauge network and its low sampling frequency surely prevented them from being recorded, and mostly the only references about these events came only from the media.

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“…Most of the meteotsunami events were relatively local (S = 1-2); the spatial coverage S = 3 was mainly associated with hurricanes (Okal 2021; Titov and Moore 2021) and typhoons (Heidarzadeh and Rabinovich 2021;Lin and Wu 2021) and also with intensive squall lines propagating along the coast (Sibley et al 2021;Araujo et al 2021). The chain of events on 23-27 June 2014 (S = 4) observed in many bays and harbours of the Mediterranean and Black seas (Rabinovich 2020;Vilibić et al 2021;Zemunik et al 2021;Okal 2021) was probably unique.…”

Section: Overview Of the Special Issue And Meteotsunami Cataloguingmentioning

confidence: 98%

“…A thorough analysis of known meteotsunamis along the Brazilian coastline between 1977 and 2020 was done by Candella and Araujo (2021) based on media reports and documents describing the impact of extreme waves on coastal communities. One such event (October 2019) has been investigated in detail by Araujo et al (2021). At least two tsunami-like waves with heights greater than 0.7 m and periods around 15 min generated by a squall line spread northwards along the coast of Santa Catarina.…”

Section: Meteotsunamis In South Americamentioning

confidence: 99%