Inherent Characteristics of 2D Alluvial Formations Subjected to In-Plane Motion

Chuanbin Zhu*, David Thambiratnam, Chaminda Gallage

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)


We investigate the inherent characteristics of 2D basins subjected to vertically propagating P-SV waves using the finite difference approach. The ratio of fundamental frequencies between an inhomogeneous basin (f0) and its equivalent flat layers (fh) is found to be a function of both its outer overall geometry and inner geometric formation. 2D resonance can occur in inhomogeneous basins under certain conditions, and the f0/fh can be used to demarcate deep from shallow basin behaviors. With other conditions remaining the same, changing a basin from homogeneity to inhomogeneity results in a lower f0/fh and makes 2D resonance less likely to occur.

Original languageEnglish
Pages (from-to)1512-1530
Number of pages19
JournalJournal of Earthquake Engineering
Issue number9
Publication statusPublished - 2019
Externally publishedYes

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