NUMERICAL SIMULATION OF A CATASROPHIC EARTHQUAKE AND STRONG TSUNAMI OF APRIL 1, 2014 NEAR THE NORTHWESTERN PART OF THE CHILEAN COAST

Abstract

Catastrophic seismic events off the coast of Chile and the tsunami caused by them on April 1, 2014 north of Iquique with a magnitude of 8.2 are analyzed. Possible causes of moderate tsunami strength at a sufficiently large earthquake magnitude have been investigated. Within the framework of the keyboard block model of the subduction zone, based on the data on the localization of the main shock and aftershocks, the structure of the seismic source was selected. It was found that the computation results for the tsunami run-up noticeably exceed the observational data, which may be associated with the complex dynamics of the source. Comparison with the data of computations of other authors is performed.

Keywords

• tsunami
• seismic and tsunami dangers
• tsunamigenic earthquakes
• tsunami waves
• numerical simulation
• chilean coast