Cepstral Depth Estimates for Sequences of Shallow Events
Abstract
In this study we demonstrate the capability of our recently improved cepstral program on estimating the depth of shallow events. Our procedure utilizes the Power and the Complex Cepstrums in performing these estimates. Our latest version incorporates a number of metrics that help optimize the overall process. The metrics include: power and complex cepstrum similarity, liftering adequacy, and success of the homomorphic deconvolution, which includes delay lag recovery, and deconvolved waveform comparison to the initial signal. Weights applied to each metric are set empirically, or based on the adequacy of the minimum phase signal approximation. In addition, optimization of a combination of processing techniques is discussed here. Arrays or networks are used to identify the depth phases. The algorithms are tested on a ground-truth database, with well-known depth events and on synthetic waveforms. The results are compared with those obtained by other techniques.
- Publication:
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AGU Fall Meeting Abstracts
- Pub Date:
- December 2018
- Bibcode:
- 2018AGUFM.S53E0454K
- Keywords:
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- 3355 Regional modeling;
- ATMOSPHERIC PROCESSESDE: 1040 Radiogenic isotope geochemistry;
- GEOCHEMISTRYDE: 6620 Science policy;
- PUBLIC ISSUESDE: 7219 Seismic monitoring and test-ban treaty verification;
- SEISMOLOGY