Efficiency of complex trace analysis to attenuate ground-roll noise from seismic data
JOURNAL OF APPLIED GEOPHYSICS, cilt.106, ss.50-59, 2014 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 106
- Basım Tarihi: 2014
- Doi Numarası: 10.1016/j.jappgeo.2014.04.013
- Dergi Adı: JOURNAL OF APPLIED GEOPHYSICS
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.50-59
- Karadeniz Teknik Üniversitesi Adresli: Hayır
Özet
Ground-roll, characterized by low frequency and high amplitude, is one of the most important issues in seismic data processing. Common methods to eliminate ground-roll noise from seismic data include frequency-based methods which pose filtering the whole signal. In addition, assuming being stationary signal which attended in filter is another disadvantage of those methods: however, in this paper a new method based on using Hilbert transform to address high-amplitude, low-frequency coherent noise is proposed. In this respect the conventional seismic trace can be viewed as the real component of a complex trace. Therefore, its envelope and normalized phase, as the input of running average, are easily calculated. On the other hand, complex trace-based filtering is approached to be a method distinguishing between coherent noise and reflections overlapping each other. This is done by setting a suitable length of window on running average in order to extract low frequency components from data. (C) 2014 Elsevier B.V. All rights reserved.