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

ÇOLAK Ö. H., Destici T. C., ÖZEN Ş., Arman H., Cerezci O.

Conference of the World-Academy-of-Science-Engineering-and-Technology, Prague, Czech Republic, 25 - 27 August 2006, vol.14, pp.305-306 identifier

  • Publication Type: Conference Paper / Full Text
  • Volume: 14
  • City: Prague
  • Country: Czech Republic
  • Page Numbers: pp.305-306
  • Keywords: Discrete Wavelet Transform, Frequency-Energy Characteristics, P and S waves arrival time
  • Akdeniz University Affiliated: Yes

Abstract

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.

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.