Pérdidas de vidas, viviendas, infraestructura y embarcaciones por el tsunami del 27 de Febrero de 2010 en la costa central de Chile

Contreras, Manuel; Winckler, Patricio

doi:10.4067/s0718-28132013000200001

Cited by 35 publications

(18 citation statements)

References 16 publications

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“…The last earthquake in the Concepcion area took place on 27 February 2010, at 6:34 UTC (Delouis et al, ; Lorito et al, ). The earthquake generated a destructive tsunami which affected several coastal settlements in the region 33–39° S, causing loss of life and significant damage to housing and public infrastructure (Contreras & Winckler, ; Fritz et al, ). One of the interesting features of the tsunami was the disparity of the impact in the Biobio Region (Fritz et al, ).…”

Section: Study Areamentioning

confidence: 99%

Tsunami Resonance and Spatial Pattern of Natural Oscillation Modes With Multiple Resonators

et al. 2019

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Tsunami resonance and coupled oscillation of shelf and bays modes has been reported to be important in tsunami wave amplification. The main objective of this work is to study the spatial pattern of natural oscillation modes and to analyze the influence of several resonators on the coast of the central Chile, which has a complex morphology with several bays, submarine canyons, and a wide continental shelf. First, natural oscillation modes were computed by means of modal analysis of local and regional domains. Second, a dense network of tide gauges and pressure sensors was analyzed to obtain background spectra inside bays. Third, tsunami spectra were computed from both tsunami records and numerical simulations. The results show that the use of modal analysis and background and tsunami spectra is effective for identifying natural oscillation modes. In addition, a dense network of tide gauges is useful to validate the spatial pattern of these natural modes. It was observed that larger resonators and the shelf are important in coupling oscillation with local bays, such that large amplification can be observed. Finally, this analysis allowed the diverse effects of 2010 and 2011 tsunamis in the bays of central Chile to be explained, making it possible to better address tsunami mitigation measures and the preparedness of coastal communities.

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Section: Study Areamentioning

confidence: 99%

Tsunami Resonance and Spatial Pattern of Natural Oscillation Modes With Multiple Resonators

et al. 2019

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“…The tsunami depth was 3.1 m in front of the forest, but houses located behind the forest did not suffer the impact of the tsunami and were not damaged by the tsunami. However, in the area that was not protected by coastal forests, 56.6 ha were inundated, and this area suffered the greatest devastation; 95 houses were washed away and destroyed (Contreras and Winckler 2013). Again, no damage to the P. radiata trees was observed; they resisted the tsunami without suffering any breaks to their stems or uprooting (Fig.…”

Section: Beaches Of the City Of Araucomentioning

confidence: 94%

“…3 Graphical representation of the effect of forest protection on houses in Arauco City, BioBio Region, during a tsunami. In the figure, the unforested area corresponds to the beaches of Curaquilla, and the depth of the inundation varied between 1.4 and 2.5 m. The area located between Curaquilla and Arauco City with houses and the area behind the forest were not flooded destroyed 20 houses (Contreras and Winckler 2013). In the inland area without forest, the tsunami reached a height of 2.5 m on the beach, while the height behind the forest was only 0.3-0.5 m (Fig.…”

Section: The Coastal Town Of Pingueralmentioning

confidence: 99%

Field study on planted forest structures and their role in protecting communities against tsunamis: experiences along the coast of the Biobío Region, Chile

et al. 2015

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A field study using satellite images was carried out to analyze the effect of coastal vegetation in mitigating the impact of a catastrophic tsunami on coastal villages in the Biobío Region, Chile, in February 2010. Two types of stand, Pinus radiata D. Don forests and Cupressus macrocarpa Hartw. shelterbelts, appear to have protected coastal areas behind them from the direct impact of the tsunami. The impacts of the horizontal and vertical structures of these coastal forests on the drag forces were analyzed by observing the characteristics of Pinus radiata forests and Cupressus macrocarpa shelterbelts. The stands absorbed the impact of the tsunami without incurring broken stems or uprooted trees due to their diverse horizontal structure, as they contained short trees with various diameters. However, small areas of the stands were damaged by salinity after the tsunami. For this tsunami, which was less than 3 m high, the horizontal and vertical structures of the P. radiata and C. macrocarpa stands provided effective protection for coastal villages since they reduced the velocity and height of the tsunami. A shelterbelt consisting of three rows of C. macrocarpa in front of the tsunami and a P. radiata forest with a density of 11 trees/100 m 2 and a width of[50 m immediately behind the shelterbelt are suggested as a means of protecting communities along the coastline of the Biobío Region against tsunamis.

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“…El tsunami generado por el terremoto generó daños significativos en puertos, edificios, carreteras y diversa infraestructura residencial, comercial y productiva (Fritz et al, 2011;Contreras & Winckler, 2013;Edge, 2013). Estos daños se percibieron con mayor magnitud en las localidades ubicadas en las regiones del Maule y Biobío.…”

Section: Introductionunclassified

Rehabilitacion de centros urbanos afectados por el tsunami 2010 en la Comuna de Pelluhue, Chile

Igualt¹,

Breuer²,

Winckler³

et al. 2017

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RESUMEN. La Comuna de Pelluhue fue una de las más afectadas durante el terremoto y tsunami del 27 de febrero de 2010 en Chile central, registrando 47 fallecidos, el mayor número de muertes per-cápita del país. Este estudio se orienta a analizar la resiliencia de los centros urbanos de la comuna, desde sus principales instancias: preparación, resistencia, recuperación y adaptación. Los daños generados por el tsunami se estudian mediante un levantamiento in-situ, complementado con levantamientos efectuados en 2013 y 2015, consulta de percepción de seguridad y un análisis del impacto de los instrumentos de planificación territorial en la rehabilitación de los centros urbanos. De estos estudios se concluye que la comuna experimentó una rápida recuperación de infraestructura entre 2010 y 2012. Las modificaciones incorporadas en la ordenanza del Plan Regulador Comunal a finales de 2012 promovieron el uso de una nueva tipología estructural adaptada al riesgo de tsunami en la Zona Turística de Borde Costero (ZTBC-1). El uso de marcos estructurales de madera y hormigón en el primer piso, se adoptó en respuesta al bajo coeficiente de ocupación de suelo sugerido en la ordenanza del Plan Regulador Comunal para dicha zona, sin necesariamente cumplir con criterios de diseño estructural. En otras zonas ubicadas en el área inundada, no obstante, se reconstruyó sin adoptar criterios de adaptación. Aun cuando se implementó una consulta, que no tiene la representación adecuada de toda la población, el sondeo indica que el plan de emergencia implementado por ONEMI, por su parte, generó una mejor percepción de seguridad en las zonas de riesgo por parte de los residentes, pero los visitantes desconocen las medidas de evacuación vigentes. Palabras clave: rehabilitación urbana, resiliencia, adaptación, levantamiento post-tsunami, zonificación, percepción de seguridad. Coastal settlements rehabilitation affected by the 2010 tsunami in PelluhueCounty, Chile ABSTRACT. The Pelluhue country was one of the most affected during the earthquake and tsunami of February 27, 2010 in central Chile, with 47 deaths, the highest number of per-capita deaths in the country. This study is oriented to analyze the resilience of the urban centers of the commune, from its principal instances: preparation, resistance, recovery and adaptation. The damage generated by the tsunami is studied through an on-site survey, supplemented by surveys conducted in 2013 and 2015, a safety perception consultation and an analysis of the impact of territorial planning instruments in the rehabilitation of urban centers. From these studies it is concluded that the commune experienced a rapid infrastructure recovery between 2010 and 2012. The modifications incorporated in the ordinance of the Community Regulatory Plan at the end of 2012 promoted the use of a new structural typology adapted to the tsunami risk in the Coastal Tourist Zone (ZTBC-1). The use of wood and concrete structural frames on the first floor was adopted in response to the low coefficient of soil occupation su...

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Pérdidas de vidas, viviendas, infraestructura y embarcaciones por el tsunami del 27 de Febrero de 2010 en la costa central de Chile

Cited by 35 publications

References 16 publications

Tsunami Resonance and Spatial Pattern of Natural Oscillation Modes With Multiple Resonators

Tsunami Resonance and Spatial Pattern of Natural Oscillation Modes With Multiple Resonators

Field study on planted forest structures and their role in protecting communities against tsunamis: experiences along the coast of the Biobío Region, Chile

Rehabilitacion de centros urbanos afectados por el tsunami 2010 en la Comuna de Pelluhue, Chile

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