Observations of long period Rayleigh wave ellipticity

Journal article

We analyse phase shifts and amplitude ratios of horizontal to vertical components of T ∼ 150's fundamental Rayleigh waves. In the ray picture of surface wave propagation, it is expected that at a single station this ratio will be constant, being controlled only by the seismic velocity structure beneath the seismic station. In contrast, we observe substantial variability in the amplitude ratios measured at a number of stations from the Global Seismic Network. We discuss possible causes for the...

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Authors: Ferreira, A; Woodhouse, J

• Publication status: Published
• Journal: GEOPHYSICAL JOURNAL INTERNATIONAL
• Volume: 169
• Issue: 1
• Pages: 161-169
• Publication date: 2007-04-01
• DOI: 10.1111/j.1365-246X.2006.03276.x
• EISSN: 1365-246X
• ISSN: 0956-540X
• Language: English
• Keywords: amplitude ratios; lateral heterogeneity; Rayleigh waves; global seismic tomography