Research Outputs

Permanent URI for this communityhttps://hdl.handle.net/20.500.14288/2

Browse

Filters

20211

Advanced Search

Filter by

Settings

Department: search.filters.department.Department of PhysicsSubject: search.filters.subject.Women

Search Results

Now showing 1 - 1 of 1
  • Placeholder
    PublicationMetadata only
    Characterizing the aperiodic behavior of seismic waves using the scale index analysis
    (Springer Science and Business Media Deutschland GmbH, 2021) Department of Physics; Yılmaz, Nazmi; Teaching Faculty; Department of Physics; College of Sciences; 178427
    The scale index analysis determines the degree of aperiodicity and chaos in nonlinear dynamical systems. The scale index parameters provide quantitative information on the aperiodicity and chaos in a system in the interval between 0 and 1. Aperiodicity and chaotic behavior of the seismic waves can be studied by this wavelet-based method. In this work, the method is applied firstly to the Duffing oscillator for calibration and secondly to the time series of selected seismic waves to determine and classify their aperiodic and chaotic characteristics. The results indicate that the method is efficient in distinguishing aftershocks from independent earthquakes. The scale index parameters computed from the time series of 23 October 2011, 10:41:21 Van-Tabanlı (ML:6.6) earthquake are in the range of 0.67–0.98, indicating relatively strong aperiodicity hence strong chaotic behavior. On the other hand, the parameters computed from the time series of 09 November 2011, 19:23:33 Van-Edremit (ML:5.6) earthquake are in the range of 0.27–0.62, showing relatively weak aperiodicity hence weak chaotic behavior. The scale index analysis is presented as a unique quantitative approach in seismic wave comparison, complementary to the established seismological analysis techniques.