Estudio de efectos de sitio en la Región de Coquimbo durante el terremoto de Illapel Mw 8.3 de 2015

Fernández, José; Pastén, Cesar; Ruiz, Sergio; Leyton, Felipe

doi:10.4067/s0718-28132017000100003

Cited by 5 publications

(6 citation statements)

References 2 publications

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“…Even though the damage to structure could be due to earthquake and tsunami, it was observed that the damage due to the earthquake was limited (Candia et al, 2017) and the most affected structures were made of adobe (Fernández et al, 2017). Therefore, the present work considered that the damage on flooded structures was only due to the tsunami.…”

Section: Building Damage and Tsunami Inundation Datamentioning

confidence: 97%

“…We first define a tsunami scenario, then we run the numerical simulation to obtain the inundation depth and, finally, we estimate the tsunami damage in Coquimbo. Since damage due to earthquake in Coquimbo Region was limited in 2015 (Candia et al, 2017;Fernández et al, 2017), it is assumed that the damage to structures is exclusively due to tsunami. 10…”

Section: Application Of Fragility Curve To Tsunami Damage Estimationmentioning

confidence: 99%

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Tsunami fragility curve using field data and numerical simulation of the 2015 tsunami in Coquimbo, Chile

Aránguiz

Urra

Okuwaki

et al. 2017

Preprint

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Abstract.The last earthquake which affected Coquimbo city took place in September 2015, with localized damage observed in low areas of the city. In addition, another seismic gap north of the 2015 earthquake rupture area has been identified; therefore, a significant earthquake and tsunami could occur in the near future. The present paper develops the tsunami fragility curve for the city of Coquimbo based on field survey data and tsunami numerical simulations. The inundation depth of the 2015 Chile tsunami in Coquimbo was estimated by means of numerical simulation with the NEOWAVE model and 5 nested grids with a 15 maximum grid resolution of 10 m. The fragility curve exhibited behavior similar to that of other curves in plain areas in Japan, where low damage was observed at relatively high inundation depths. The new fragility curve was used to estimate the damage by possible future tsunamis in the area. The damage assessment showed that ~50% of the structures in the lower area of Coquimbo have a high probability of damage in case of a tsunami generated off the coast of the study area if the city is rebuilt with the same type of structures. 20

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Section: Building Damage and Tsunami Inundation Datamentioning

confidence: 97%

Section: Application Of Fragility Curve To Tsunami Damage Estimationmentioning

confidence: 99%

Tsunami fragility curve using field data and numerical simulation of the 2015 tsunami in Coquimbo, Chile

Aránguiz

Urra

Okuwaki

et al. 2017

Preprint

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“…2f shows the remaining foundation of a washed-away structure. Even though the damage to the structure could be due to both the earthquake and tsunami, it was observed that damage due to the earthquake was limited (Candia et al, 2017) and the structures most affected by the earthquake were made of adobe (Fernández et al, 2017). In addition, the authors had the opportunity to compare damage to inundated and non-inundated houses in Coquimbo in order to verify that the structural damage to inundated houses was due to the tsunami.…”

Section: Building Damage and Tsunami Inundation Datamentioning

confidence: 99%

“…Coquimbo. Since earthquake damage in the Coquimbo Region was limited in 2015 (Candia et al, 2017;Fernández et al, 2017), it is assumed that the damage to structures is due exclusively to the tsunami.…”

Section: Application Of Fragility Curve To Tsunami Damage Estimationmentioning

confidence: 99%

Development and application of a tsunami fragility curve of the 2015 tsunami in Coquimbo, Chile

Aránguiz

Urra

Okuwaki

et al. 2018

Nat. Hazards Earth Syst. Sci.

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Abstract. The last earthquake that affected the city of Coquimbo took place in September 2015 and had a magnitude of M w = 8.3, resulting in localized damage in low-lying areas of the city. In addition, another seismic gap north of the 2015 earthquake rupture area has been identified; therefore, a significant earthquake (M w = 8.2 to 8.5) and tsunami could occur in the near future. The present paper develops a tsunami fragility curve for the city of Coquimbo based on field survey data and tsunami numerical simulations. The inundation depth of the 2015 Chile tsunami in Coquimbo was estimated by means of numerical simulation with the Non-hydrostatic Evolution of Ocean WAVEs (NEOWAVE) model and five nested grids with a maximum grid resolution of 10 m. The fragility curve exhibited behavior similar to that of other curves in flat areas in Japan, where little damage was observed at relatively high inundation depths. In addition, it was observed that Coquimbo experienced less damage than Dichato (Chile); in fact, at an inundation depth of 2 m, Dichato had a ∼ 75 % probability of damage, while Coquimbo proved to have only a 20 % probability. The new fragility curve was used to estimate the damage by possible future tsunamis in the area. The damage assessment showed that ∼ 50 % of the structures in the low-lying area of Coquimbo have a high probability of damage in the case of a tsunami generated off the coast of the study area if the city is rebuilt with the same types of structures.

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“…Tras el terremoto del Maule 2010 (M w 8.8), innumerables casos pusieron en evidencia cómo las propiedades dinámicas de los suelos jugaron un rol preponderante en la distribución del daño (Leyton et al, 2011(Leyton et al, , 2012(Leyton et al, , 2013. Similares observaciones se han tenido para los terremotos de Iquique 2014 (M w 8.1) (Becerra et al, 2016) e Illapel 2016 (M w 8.4) (Fernández et al, 2017). Ello motivó la incorporación de parámetros dinámicos para la clasificación de los suelos en la normativa chilena (por DOI: https://doi.org/10.21703/ 0718-2813.2024.35.2796Leyton, F., Montalva, G., Pastén, C., Ruz, F., Sáez, E., Taiba, O. y Tiznado, J.…”

Section: Introductionunclassified

Variabilidad de resultados de la exploración geofísica de sitios usando métodos de ondas superficiales

Leyton,

Montalva,

Pastén

et al. 2024

obrasypro

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Tras el terremoto del Maule 2010 (Mw 8.8), grandes cambios se produjeron en la normativa sísmica a nivelnacional. Uno de los aspectos interesantes fue el cambio en la metodología para la clasificación de suelos en la normaNCh433. En pocas palabras, se pasó del uso de parámetros de resistencia al uso de parámetros dinámicos del suelo,como el promedio armónico de la velocidad de propagación de ondas de corte en los 30 m superiores del terreno (Vs30)y el periodo predominante (Tg), que se evalúa incorporarlo. En este estudio, se comparan resultados obtenidos por4 equipos de trabajo que exploran seis sitios utilizando diversos sensores, geometrías y procedimientos, todos ellosusando Métodos de Ondas Superficiales (MOS). Se observa que, en general, la estimación de Vs30 y Tg son bastanterobustas, pero se encuentran importantes variaciones en los perfiles de velocidad obtenidos; es por ello que es necesariocontrarestar el resultado con la estratigrafia del sondaje. Estos resultados reflejan las limitaciones y potencialidadesde los MOS para estimar las propiedades dinámicas de sitios.

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Estudio de efectos de sitio en la Región de Coquimbo durante el terremoto de Illapel Mw 8.3 de 2015

Cited by 5 publications

References 2 publications

Tsunami fragility curve using field data and numerical simulation of the 2015 tsunami in Coquimbo, Chile

Tsunami fragility curve using field data and numerical simulation of the 2015 tsunami in Coquimbo, Chile

Development and application of a tsunami fragility curve of the 2015 tsunami in Coquimbo, Chile

Variabilidad de resultados de la exploración geofísica de sitios usando métodos de ondas superficiales

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