Journal
SEISMOLOGICAL RESEARCH LETTERS
Volume 87, Issue 2, Pages 358-362Publisher
SEISMOLOGICAL SOC AMER
DOI: 10.1785/0220150192
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Funding
- U.S. Geological Survey (USGS), Department of the Interior, under USGS Award [G14AP00056]
- National Science Foundation [EAR-1114228, EAR-1246975, EAR-1411779]
- National Basic Research Program of China (973 Program) [2014CB845900]
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Stacking is an efficient approach to increase signal-to-noise ratio, which is a key issue in seismic data processing. The time-frequency domain-phase weighted stack (tf-PWS) that uses coherency of instantaneous phase as a weighting function can significantly improve the stacked signal quality of many data-sets. A graphics processing unit implementation was developed to reduce the heavy computational cost of tf-PWS. Synthetic tests suggest the speed-up factor is up to 20. Our real-data test shows that the convergence of noise cross-correlation functions can be substantially improved by tf-PWS without a computational cost increase.
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