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Grupo de Investigación en Física, Facultad de Ingeniería Universidad San Ignacio de Loyola, Lima, Peru

Universidad Nacional Mayor de San Marcos, Lima, Peru

Corresponding author.

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Cesar Jimenez

https://orcid.org/0000-0002-3671-4748

Universidad Nacional Mayor de San Marcos, Lima, Peru

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J. C. Villegas-Lanza

https://orcid.org/0000-0002-2772-1508

Instituto Geofísico del Perú, Lima, Peru

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https://doi.org/10.1142/S1793431124500404Cited by:0 (Source: Crossref)

Abstract

In this research, we conducted the numerical simulation of the tsunami, and the static stress transfer of Coulomb for the 1960 northern Peru earthquake (Mw 7.6). The Tsunami numerical model was used to simulate the propagation and inundation processes. In the inundation grid, we used a high resolution bathymetry (30m resolution) from marine sounding. For the inundation grid (grid D), the results of simulated model are parameters such as arrival times of the first wave of the tsunami, maximum wave heights and inundation areas for each zone to be modeled. These results have been validated with information provided by the population that endured the effects of the earthquake and subsequent tsunami. The simulated arrival times of the leading wave for the areas of San José, Pimentel, Santa Rosa and Puerto Eten were 69.5, 69, 66.5 and 68min, respectively. The maximum inundation in San José was 2.78km away and the height of the wave reached approximately 6.2m. The Coulomb stress transfer indicates an increase in stress in the northern zone of the seismic source close to Piura coast, as well as an increase in stress between the Peruvian trench and the seismic source near the meridians $- 81 . 0^{\circ}$ and $- 81 . 5^{\circ}$ which implies an activation of seismicity and a potential zone for a next seismic event of similar or greater magnitude.

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