Abstract
In order to speed up the calculation of tsunami wave propagation, the field-programmable gate array (FPGA) microchip is used. This makes it possible to achieve valuable performance gain with a modern regular personal computer. The two half-step MacCormack scheme was used herein for numerical approximation of the shallow water system. We studied the distribution of tsunami wave maximal heights along the coast of the southern part of Japan. In particular, the dependence of wave maximal heights on the particular tsunami source location was investigated. Synthetic 100 × 200 km sources have realistic parameters corresponding to this region. As observed numerically, only selected parts of the entire coast line are subject to dangerous tsunami wave amplitudes. The particular locations of such areas strongly depend on the location of the tsunami source. However, the extreme tsunami heights in some of those areas can be attributed to local bathymetry. The proposed hardware acceleration to compute tsunami wave propagation can be used for rapid (say, in a few minutes) tsunami wave danger evaluation for a particular village or industrial unit on the coast.
Highlights
To address the problem of timely reporting of the danger of a tsunami wave at a particular coastal zone location, we apply the facilities of modern computer architectures to accelerate the numerical simulation of tsunami wave propagation
1 we present a comparison of the shallow water system solutions obtained by our field-programmable gate array (FPGA)-based
In this paper we checked the possibility of very rapid numerical simulation of tsunami wave
Summary
To address the problem of timely reporting of the danger of a tsunami wave at a particular coastal zone location, we apply the facilities of modern computer architectures to accelerate the numerical simulation of tsunami wave propagation. The main goal of this paper is to demonstrate the advantages of a new super rapid method for modeling tsunami wave propagation. According to [1], rather strong earthquakes (and, dangerous tsunami waves) happen with an approximately 150-year period in the part of the Nankai subduction zone near Shikoku Island and Kii Peninsula. As the last high-impact event in the region was in 1854 (166 years ago), the one can be expected in the near future. We are running numerical experiments via digital bathymetry which approximates the real bottom topography of a corresponding water area
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