Seafloor Rayleigh ellipticity, measured from unoriented data, and its significance for passive seismic imaging in the ocean
Sanxi Ai,
Takeshi Akuhara,
Lipeng He
et al.
Abstract:Summary
Observations of the seafloor Rayleigh ellipticity contribute to seismic imaging in the ocean. To extract such observables from the arbitrarily oriented ocean-bottom seismometer (OBS) data, we develop an orthogonal-regression based approach to measure the waveform amplitude ratios of the unoriented horizontal and vertical components. The amplitude ratios are then used to calculate the Rayleigh ellipticity (and the sensor orientation angle). The robustness of our method is verified by appl… Show more
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