In this research, we have conducted a numerical simulation to obtain the seismic source, coseismic deformation field, and the tsunami propagation of the great Lima-Peru 1940 earthquake and tsunami, based on macroseismic information and focal mechanism from the literature. The seismic dimensions of our preferred model were set at 162 km×71 km according to VIII isoseismal intensity. The slip distribution is homogeneous with a mean value of 2.7 m. The fault plane orientation was set at strike = 330^∘, dip = 20^∘, and rake = 90^∘. The maximum simulated uplift was 1.27 m and the maximum subsidence was 0.36 m. Due to the proximity of the seismic source to the coast, the city of Huacho was uplifted around 11 cm. The fault plane of the 1940 earthquake was located in the updip near the coast. The maximum tsunami height simulated in Huacho was 1.80 m. We suggest that there is a high tsunamigenic potential near the trench to generate a shallow earthquake.

中文翻译：

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1940年利马-秘鲁地震和海啸（Mw 8.0）的数值模拟

在这项研究中，我们根据宏观地震信息和文献中的震源机制，通过数值模拟获得了利马－秘鲁1940年大地震和海啸的震源，同震形变场以及海啸传播。根据VIII等震强度，我们的首选模型的地震维数设置为162 km×71 km。滑移分布是均匀的，平均值为2.7 m。断层平面方向设置为走向= ^330∘，倾角= ^20∘和前角= ^90∘。最大模拟隆起为1.27 m，最大沉降为0.36 m。由于地震源靠近海岸，Huacho市隆起了约11厘米。1940年地震的断层平面位于海岸附近的上倾。华乔模拟的最大海啸高度为1.80 m。我们建议在海沟附近具有很高的海啸发生潜力，以产生浅地震。