Release Time:2019-03-09  Hits:

Indexed by: Journal Article

Date of Publication: 2011-09-01

Journal: EARTHQUAKE ENGINEERING AND ENGINEERING VIBRATION

Included Journals: EI、SCIE、Scopus

Volume: 10

Issue: 3

Page Number: 393-402

ISSN: 1671-3664

Key Words: apparent velocity; P-SV ratio; equivalent incident angle; rotational ground motion

Abstract: The apparent velocity of the incident wave is an important parameter for simulating rotational ground motion with theoretical methods, but it is difficult to estimate effectively when there is only a single record. This paper discusses a P-SV ratio method based on elastodynamic theory in a multi-layer isotropic elastic half space. The apparent velocities of four earthquakes in the SMART array are calculated with this method. The result is close to a method that uses travel time analysis. Furthermore, the factors that impact the apparent velocity and equivalent incident angle are considered according to records from the Chi-Chi earthquake. There is no obvious relationship between the equivalent incident angle and epicenter. distance. However, the equivalent, incident angle is obviously dependent on the site conditions.