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 issue65Retrospective analysis of the Limón earthquake of April 22, 1991 (Mw 7.7) and its triggered seismicity in the Ayil, Pacuare, Atirro, División and Navarro faultsThe earthquakes of Cuericí of April 24, 1994 (Mw 6.1) and of Buenavista of July 3, 1983 (Ms 6,3): two contiguous ruptures of the División fault, central Costa Rica author indexsubject indexarticles search
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Revista Geológica de América Central

On-line version ISSN 0256-7024Print version ISSN 0256-7024

Abstract

CAMPOS-DURAN, Daniela; QUINTERO-QUINTERO, Ronnie  and  ABARCA-ROJAS, Tatiana. Valle de La Estrella earthquake: seismic analysis, disaster cascade and update of economic losses in present value (2020). Rev. Geol. Amér. Central [online]. 2021, n.65, pp.169-192. ISSN 0256-7024.  http://dx.doi.org/10.15517/rgac.v0i65.47079.

Seismicity and focal mechanisms in the of North Panama Deformed Belt (NPDB) indicate a compressional environment associated with the overthrusting of the Panama Block (PB) on the Caribbean plate; crustal PB strike-slip focal mechanisms are observed in the Talamanca and Central Volcanic Cordillera. The hypocenters reach maximum depths between 50-60 km at the foot of the Talamanca mountain range and are shallow near the Caribbean coast. The 1991, Valle de la Estrella earthquake (Mw 7.6) triggered aftershocks in an area of ~140x70 km; landslides and liquefaction were the secondary events that caused most damage and losses in infrastructure (housing, bridges, railroad network, road network and aqueducts); its effects were concentrated in coastal cities, such as Limón and Bocas del Toro. The economic losses in present 2020 value correspond to $3 433 266 937.41.

Keywords : Earthquake; Limon; 1991; Liquefaction; Landslides; Focal Mechanisms; South Caribbean.

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