Two-dimensional scattering of in-plane body waves due to a discontinuity in bedrock

✍ Scribed by Heymsfield, Ernest

• Publisher: John Wiley and Sons
• Year: 1999
• Tongue: English
• Weight: 258 KB
• Volume: 28
• Category: Article
• ISSN: 0098-8847
• DOI: 10.1002/(sici)1096-9845(199912)28:12<1651::aid-eqe887>3.0.co;2-2

✦ Synopsis

The direct boundary integral equation technique is used to study in-plane surface ampli"cation of in-plane seismic body waves for the case of an inhomogeneity in a bedrock half-space. In the studied soil con"guration, a soil layer rests on a rock half-space which includes a rock inclusion. The rock inclusion considered is a semi-in"nite horizontal rock layer in which its upper boundary borders the soil layer. Materials in the soil}rock con"guration are considered viscoelastic except for the section of the rock half-space below the level of the rock inclusion which is considered elastic. A parametric study is performed to determine controlling factors for surface displacement due to in-plane body waves. The study investigates varying the sti!ness and the thickness of the rock inclusion for a range of frequencies and wave incidence angles. Anti-plane waves for this type of soil-rock con"guration have been addressed in a previous article by Heyms"eld (Earthquake