The scattering of seismic waves from saturated river valley with water layer: Modelled by indirect boundary element method

Liu, Zhongxian; Ai, Tian-Chun; Huang, Lei; Yuan, Xiaoming; Zhang, Mingkai; Huang, Long

doi:10.1016/j.enganabound.2023.01.021

Engineering Analysis with Boundary Elements

2023

DOI: 10.1016/j.enganabound.2023.01.021

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The scattering of seismic waves from saturated river valley with water layer: Modelled by indirect boundary element method

Zhongxian Liu

Tian-Chun Ai

Lei Huang

et al.

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Cited by 11 publications

References 32 publications

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Analytical Solution for the Topographic Effect of an Offshore Circular‐Arc Canyon Under P‐Wave Incidence

He,

Huang,

Zhang

2024

Num Anal Meth Geomechanics

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This paper studies the dynamic response of a circular‐arc canyon topography in the seabed under a seawater layer subjected to vertically and obliquely incident P‐wave excitations. The seabed is assumed to be an isotropic elastic medium. The analytical solution of the problem is developed using the large circular arc assumption and the Fourier–Bessel series expansion technique. This study focuses mainly on analysing the influence of seawater on the topographic amplification effect of the canyon. The differences between offshore and onshore canyons are compared in both the frequency and time domains. In the frequency domain, the presence of a layer of water will amplify or suppress the vertical response of the canyon, depending on the frequencies of the incident P‐waves and the detailed point location within the canyon. This is in contrast to the flat seabed model. In addition, the effects of water depth, canyon depth‐to‐width ratio, and angle of incidence of the P‐waves on the W/L (water/land) spectral ratio are further analysed. The time domain results under both simple Ricker wavelets and real earthquake waves are then obtained, which show that the seawater layer amplifies the responses near the canyon edge, and the amplification effect mainly depends on the canyon depth‐to‐width ratio and incidence frequency.

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Analytical Solution for the Topographic Effect of an Offshore Circular‐Arc Canyon Under P‐Wave Incidence

He,

Huang,

Zhang

2024

Num Anal Meth Geomechanics

View full text Add to dashboard Cite

show abstract

Underwater half-space analysis to oblique 3D seismic waves based on exact free-field response

Yang,

Zhou,

Gao

et al. 2024

Applied Mathematical Modelling

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Semi-analytical solution for seismic response of circular lined tunnel in alpine valley composite site

Liang,

Zhou,

2024

Computers and Geotechnics

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The scattering of seismic waves from saturated river valley with water layer: Modelled by indirect boundary element method

Cited by 11 publications

References 32 publications

Analytical Solution for the Topographic Effect of an Offshore Circular‐Arc Canyon Under P‐Wave Incidence

Analytical Solution for the Topographic Effect of an Offshore Circular‐Arc Canyon Under P‐Wave Incidence

Underwater half-space analysis to oblique 3D seismic waves based on exact free-field response

Semi-analytical solution for seismic response of circular lined tunnel in alpine valley composite site

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