This study examines the possibility of ambient noise seismic interferometric applications to the Philippines, consisting of many large and small islands. We explored the use of conventional data processing methods and their effectiveness in generating dispersion measurements in the period from 5 s to 50 s. We used 10 months of data for 27 broadband seismic stations. The component rotation was also performed for the extraction of Rayleigh waves from body wave contaminated cross-correlation functions. Dispersion measurements were conducted, although there were still several challenges to the application of interferometry. Parameters such as signal-to-noise ratio, stack number, interstation distance, power spectral density plots and cross-correlation symmetry were analyzed in relation to the feasibility of obtaining dispersion measurements. The Rayleigh-wave phase velocities were stably estimated for selected station pairs in comparison to group velocities. The phase velocities were also obtained regardless of azimuth, indicating that the directional dependency of seismic ambient noise is small.
Keywords: ambient noise, interferometry, dispersion measurements, Rayleigh wave, the Philippines.