TY - JOUR

T1 - Fast evaluation of tsunami waves heights around kamchatka and kuril islands

AU - Lavrentiev, Mikhail

AU - Lysakov, Konstantin

AU - Marchuk, Andrey

AU - Oblaukhov, Konstantin

AU - Shadrin, Mikhail

PY - 2019/2/1

Y1 - 2019/2/1

N2 - In this paper, we consider the problem of fast wave heights numerical evaluation of hypothetical tsunami along Pacific coast of Kamchatka Peninsula and the Kuril Islands. We focus on PC-based fast numerical calculation of tsunami wave propagation according to the classical shallow water approximation. Valuable performance gain is achieved by using the advantages of the modern computer architectures, namely the Field Programmable Gates Arrays (FPGAs). The Mac-Cormack finite difference scheme of the second order approximation to solve the shallow water system (Titov V. and Gonzalez F. 1997) has been implemented to the FPGA-based Calculator, specially designed by the authors for this task (Lavrentiev et al., 2017; Lysakov et al., 2018). Numerical tests show that it takes only a few seconds to calculate tsunami wave propagation over approximately 2000x2000 km (3120x2400 knots) water area with about 900 m step gridded bathymetry for the given realistic tsunami wave source. The FPGA calculator was also tested on the exact analytical solution obtained by Marchuk (2017) for model bottom topography.

AB - In this paper, we consider the problem of fast wave heights numerical evaluation of hypothetical tsunami along Pacific coast of Kamchatka Peninsula and the Kuril Islands. We focus on PC-based fast numerical calculation of tsunami wave propagation according to the classical shallow water approximation. Valuable performance gain is achieved by using the advantages of the modern computer architectures, namely the Field Programmable Gates Arrays (FPGAs). The Mac-Cormack finite difference scheme of the second order approximation to solve the shallow water system (Titov V. and Gonzalez F. 1997) has been implemented to the FPGA-based Calculator, specially designed by the authors for this task (Lavrentiev et al., 2017; Lysakov et al., 2018). Numerical tests show that it takes only a few seconds to calculate tsunami wave propagation over approximately 2000x2000 km (3120x2400 knots) water area with about 900 m step gridded bathymetry for the given realistic tsunami wave source. The FPGA calculator was also tested on the exact analytical solution obtained by Marchuk (2017) for model bottom topography.

UR - http://www.scopus.com/inward/record.url?scp=85063681274&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:85063681274

VL - 38

SP - 1

EP - 13

JO - Science of Tsunami Hazards

JF - Science of Tsunami Hazards

SN - 8755-6839

IS - 1

ER -