Studi Automatic Picking Waktu Tiba Gelombang P dan S dengan Menggunakan Spektogram pada Obspy Python

Indriati Retno Palupi, Wiji Raharjo


One of important thing in locating hypocenter process is determine P and S arrival time of the seismogram. Beside that, frequency analysis by FFT method is needed to know the character of the seismogram, like dominant frequency. For further analysis, FFT method can be a good tools in determine P and S wave arrival time in the spectogram form. This process is called automatic picking.



Seismogram, P and S wave arrival time, hypocenter, FFT and Spectogram.

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J. Hedberg, “Spectrogram Evaluation of Seismic Risk in Managua, Nicaragua,” Engineering Geology. Lund University, Sweden, 2005.

C. Huerta-Lopez and Y. Shin, “Time-frequency analysis of earthquake records,” … Earthq. …, 2000.

P. Heckbert, “Fourier Transforms and the Fast Fourier Transform (FFT) Algorithm,” Notes Comput. Graph., 1995.

L. E. Upegui-Botero, F.M.; Huerta-López, C. I.; Caro-Cortes, J. A.; Martínez-Cruzado, J. A. ; Suarez-Colche, “Joint Time-Frequency Analysis of Seismic Records,” Proc. 15 WCEE 2012, 2012.

S. A. P. Rosyidi and M. Raihan, “Wavelet Spectrogram Analysis of Surface Wave Technique for Dynamic Soil Properties Measurement on Soft Marine Clay Site,” in Seismic Waves - Research and Analysis, 2012.


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