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Journal of Applied Sciences
  Year: 2007 | Volume: 7 | Issue: 2 | Page No.: 175-181
DOI: 10.3923/jas.2007.175.181
 
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Dispersion Patterns of Ground Roll (Seismic Noise) in Northern Niger Delta, Nigeria

I. Aigbedion

Abstract:
All seismic waves will exhibit dispersive character in a medium which displays attenuation and the most important cause of Raleigh wave dispersion is the presence of velocity layering. Results obtained shows that the Niger Delta is not a homogeneous half-space but exhibits non-homogeneous character with unequal phase and group velocities. Hence the predominance of dispersive waves in the Niger Delta is due to its non-homogeneous character. The complex topographic nature of the Niger Delta, Nigeria give rise to scattered Raleigh waves and these can be attenuated by use of field arrays that attenuates scattered Raleigh waves from all azimuths. Frequency-wave-number transform of time-offset records can be interpreted in terms of Raleigh wave dispersion. This has been utilized in this study as dispersion curves of the ground roll in areas of study are presented and interpretation of ground roll dispersion patterns made with this.
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How to cite this article:

I. Aigbedion , 2007. Dispersion Patterns of Ground Roll (Seismic Noise) in Northern Niger Delta, Nigeria. Journal of Applied Sciences, 7: 175-181.

DOI: 10.3923/jas.2007.175.181

URL: https://scialert.net/abstract/?doi=jas.2007.175.181

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