Earthquake Engineering & Structural Dynamics · 1979 · 156 citations · 12 references
Natural SciencesEarth SciencesOcean EngineeringApplied GeophysicsDigital Elevation ModelingOcean WavesGround Motion CharacterizationGround Wave PropagationIntegral Equation FormulationsSurface Wave DynamicsWave ReflectionDiscretizationFredholm Integral EquationsGround Motion ModelingNumerical DiscretizationNumerical Methods For Ground-wave ModelingScatteringScattering AmplitudesScattering Simulation
Abstract A method for calculating the two‐dimensional scattering of incident SH waves by canyons of arbitrary shape is presented. The problem is formulated in terms of a Fredholm integral equation of the first kind with the integration path outside the boundary. Point‐source discretization and a least‐squares scheme are used. Numerical results are compared with the known analytic solution for a semi‐cylindrical canyon. Spatial variations of surface amplitudes are computed for triangular and half‐cycle sinusoidal canyons as well.
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