Show simple item record

dc.contributor.authorGuimaraes P.V.
dc.contributor.authorFarina L.
dc.contributor.authorToldo E.E.
dc.date.accessioned2016-06-13T13:11:53Z
dc.date.available2016-06-13T13:11:53Z
dc.date.issued2014-12-31
dc.identifier.issn1561-8633
dc.identifier.urihttp://hdl.handle.net/20.500.11824/114
dc.description.abstractUsing the wave model SWAN (simulating waves nearshore), high waves on the southwestern Atlantic generated by extra-tropical cyclones are simulated from 2000 to 2010, and their impact on the Rio Grande do Sul (RS) coast is studied. The modeled waves are compared with buoy data and good agreement is found. The six extreme events in the period that presented significant wave heights above 5 m, on a particular point of interest, are investigated in detail. It is found that the cyclogenetic pattern between the latitudes 31.5 and 34 S is the most favorable for developing high waves. Hovmöller diagrams for deep water show that the region between the south of Rio Grande do Sul up to a latitude of 31.5 S is the most energetic during a cyclone's passage, although the event of May 2008 indicates that the location of this region can vary, depending on the cyclone's displacement. On the other hand, the Hovmöller diagrams for shallow water show that the different shoreface morphologies were responsible for focusing or dissipating the waves' energy; the regions found are in agreement with the observations of erosion and progradation regions. It can be concluded that some of the urban areas of the beaches of Hermenegildo, Cidreira, Pinhal, Tramandaí, Imbé and Torres have been more exposed during the extreme wave events on the Rio Grande do Sul coast, and are more vulnerable to this natural hazard.
dc.formatapplication/pdf
dc.languageeng
dc.publisherNatural Hazards and Earth System Sciences
dc.relationinfo:eu-repo/grantAgreement/EC/FP7/295217
dc.rightsinfo:eu-repo/semantics/openAccess
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/3.0/es/
dc.subjectcoastal zone
dc.subjectextreme event
dc.subjectnatural hazard
dc.subjectnearshore dynamics
dc.subjectocean wave
dc.subjecttropical cyclone
dc.subjectwave modeling
dc.subjectBrazil
dc.subjectCidreira
dc.subjectHermenegildo
dc.subjectRio Grande do Sul
dc.subjectTramandai
dc.titleAnalysis of extreme wave events on the southern coast of Brazil
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:eu-repo/semantics/publishedVersion
dc.identifier.doi10.5194/nhess-14-3195-2014
dc.relation.publisherversionhttp://www.nat-hazards-earth-syst-sci.net/14/3195/2014/


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record

info:eu-repo/semantics/openAccess
Except where otherwise noted, this item's license is described as info:eu-repo/semantics/openAccess