1887

Abstract

Contrary to conventional idea, predominant SH-waves are sometimes radiated from vertical impacts on the ground surface. Systematic field experiments were carried out to investigate the mechanism. The experiments revealed that the SH-waves are excited by waves incident on the boundary of a lower rigidity portion in the near-surface ground close to the impact positions. Accordingly inhomogeneities in the ground are considered to be the main cause of such SH-wave radiation that we encounter incidentally in usual seismic works using vertical forces as their sources.

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/content/papers/10.3997/2214-4609.201410361
1992-06-01
2020-09-28
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http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.201410361
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