INVERSI FILTER Q UNTUK MENINGKATKAN FAKTOR KUALITAS DAN RESOLUSI DATA SEISMIK
Seismic waves travelling through media are attenuated by the conversion of elastic energy into heat. Upon being attenuated, the travelling wave changes: amplitude is reduced, travelling waveform is modified due to high-frequency content absorption, and phase is delayed. The effect of attenuation on...
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| Main Authors: | , |
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| Format: | Theses and Dissertations NonPeerReviewed |
| Published: |
[Yogyakarta] : Universitas Gadjah Mada
2012
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| Subjects: | |
| Online Access: | https://repository.ugm.ac.id/101009/ http://etd.ugm.ac.id/index.php?mod=penelitian_detail&sub=PenelitianDetail&act=view&typ=html&buku_id=57432 |
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| Summary: | Seismic waves travelling through media are attenuated by the conversion of elastic energy into heat. Upon being attenuated, the travelling wave changes: amplitude is reduced, travelling waveform is modified due to high-frequency content absorption, and phase is delayed. The effect of attenuation on seismic data can be reduced by applying inverse Q filter method.
In this case study, Quality factor Q was determined by spectral ratio method, then it was used in inverse Q filter process. Synthetic seismic data generated by MATLAB (Seislab) program and real seismic data recording from NPRA (National Petroleum Reserve- Alaska) USGS Central Alaska was processed using this invers method. Using invers Q filter, quality factor of seismic data has improved. The value of Q improved from 176 to 984. Inverse method also increased resolution of seismic data. |
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