Frequency-Energy Characteristics of Local Earthquakes using Discrete Wavelet Transform(DWT)

The wavelet transform is one of the most important method used in signal processing. In this study, we have introduced frequency-energy characteristics of local earthquakes using discrete wavelet transform. Frequency-energy characteristic was analyzed depend on difference between P and S wave arrival time and noise within records. We have found that local earthquakes have similar characteristics. If frequency-energy characteristics can be found accurately, this gives us a hint to calculate P and S wave arrival time. It can be seen that wavelet transform provides successful approximation for this. In this study, 100 earthquakes with 500 records were analyzed approximately.

Authors:

• O. H. Colak
• T. C. Destici
• S. Ozen
• H. Arman
• O. Cerezci

Keywords:

• Discrete Wavelet Transform
• Frequency-EnergyCharacteristics
• P and S waves arrival time.

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