Velocity Dispersion Analysis of Shallow Crustal Structures North of Bukit Bunuh, Lenggong, Perak

In the Earth there is no such perfectly elastic medium. In an elastic medium, wave particles that travel through the medium could be distorted due to velocity dispersion and attenuation. Velocity dispersion is highly depends on several factors. The factors could be: porosity, fractures, fluid mob...

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Main Author: Binti Muhammad Termizi, Sarah
Format: Final Year Project
Language: English
Institution: Universiti Teknologi Petronas
Record Id / ISBN-0: utp-utpedia.18256 /
Published: Universiti Teknologi PETRONAS 2015
Subjects:
G Geography (General)
Online Access: http://utpedia.utp.edu.my/18256/1/Final%20Dissertation_16551_SarahMuhammadTermizi.pdf
http://utpedia.utp.edu.my/18256/
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spelling utp-utpedia.182562018-11-22T14:41:19Z http://utpedia.utp.edu.my/18256/ Velocity Dispersion Analysis of Shallow Crustal Structures North of Bukit Bunuh, Lenggong, Perak Binti Muhammad Termizi, Sarah G Geography (General) In the Earth there is no such perfectly elastic medium. In an elastic medium, wave particles that travel through the medium could be distorted due to velocity dispersion and attenuation. Velocity dispersion is highly depends on several factors. The factors could be: porosity, fractures, fluid mobility and also the scale of heterogeneities. In 2012, number of core samples was taken from Bukit Bunuh, Lenggong, Perak to measure the velocity P-waves and S-waves of the cores in the laboratory. One seismic reflection line was acquired in the outcrop back in May 2014. From the previous final year project shows ‘hockey-stick’ effect once applied the specific velocity ranges obtained in the laboratory for granite in velocity analysis for deep area. A series of experiments will be conducted to determine the velocity variation of granite formation at West of Bukit Bunuh over as wide a frequency range as possible. This project will cover two aspects; the geological structure of Bukit Bunuh as well as the geophysical aspect whereby seismic data processing is the main focus in this project. The experiments that will be conducted fall into two categories: (1) Reflection survey measurement (10-250Hz) with dominant frequency of. 35Hz and (2) Laboratory measurement (300-900kHz) with dominant frequency of 700kHz. Difference ranges of frequencies applied in both field and laboratory measurement are the main reason for velocity dispersion. Further analysis of the velocity dispersion will show that the laboratory velocity measurement cannot be directly applied to the reflection seismic data during the velocity picking since both experiment were acquired by using different frequency range. The application of the velocity obtained in laboratory to the reflection data will show the hockey-stick effect instead of flattening the layers in gathers. Universiti Teknologi PETRONAS 2015-01 Final Year Project NonPeerReviewed application/pdf en http://utpedia.utp.edu.my/18256/1/Final%20Dissertation_16551_SarahMuhammadTermizi.pdf Binti Muhammad Termizi, Sarah (2015) Velocity Dispersion Analysis of Shallow Crustal Structures North of Bukit Bunuh, Lenggong, Perak. Universiti Teknologi PETRONAS. (Submitted)
institution Universiti Teknologi Petronas
collection UTPedia
language English
topic G Geography (General)
spellingShingle G Geography (General)
Binti Muhammad Termizi, Sarah
Velocity Dispersion Analysis of Shallow Crustal Structures North of Bukit Bunuh, Lenggong, Perak
description In the Earth there is no such perfectly elastic medium. In an elastic medium, wave particles that travel through the medium could be distorted due to velocity dispersion and attenuation. Velocity dispersion is highly depends on several factors. The factors could be: porosity, fractures, fluid mobility and also the scale of heterogeneities. In 2012, number of core samples was taken from Bukit Bunuh, Lenggong, Perak to measure the velocity P-waves and S-waves of the cores in the laboratory. One seismic reflection line was acquired in the outcrop back in May 2014. From the previous final year project shows ‘hockey-stick’ effect once applied the specific velocity ranges obtained in the laboratory for granite in velocity analysis for deep area. A series of experiments will be conducted to determine the velocity variation of granite formation at West of Bukit Bunuh over as wide a frequency range as possible. This project will cover two aspects; the geological structure of Bukit Bunuh as well as the geophysical aspect whereby seismic data processing is the main focus in this project. The experiments that will be conducted fall into two categories: (1) Reflection survey measurement (10-250Hz) with dominant frequency of. 35Hz and (2) Laboratory measurement (300-900kHz) with dominant frequency of 700kHz. Difference ranges of frequencies applied in both field and laboratory measurement are the main reason for velocity dispersion. Further analysis of the velocity dispersion will show that the laboratory velocity measurement cannot be directly applied to the reflection seismic data during the velocity picking since both experiment were acquired by using different frequency range. The application of the velocity obtained in laboratory to the reflection data will show the hockey-stick effect instead of flattening the layers in gathers.
format Final Year Project
author Binti Muhammad Termizi, Sarah
author_sort Binti Muhammad Termizi, Sarah
title Velocity Dispersion Analysis of Shallow Crustal Structures North of Bukit Bunuh, Lenggong, Perak
title_short Velocity Dispersion Analysis of Shallow Crustal Structures North of Bukit Bunuh, Lenggong, Perak
title_full Velocity Dispersion Analysis of Shallow Crustal Structures North of Bukit Bunuh, Lenggong, Perak
title_fullStr Velocity Dispersion Analysis of Shallow Crustal Structures North of Bukit Bunuh, Lenggong, Perak
title_full_unstemmed Velocity Dispersion Analysis of Shallow Crustal Structures North of Bukit Bunuh, Lenggong, Perak
title_sort velocity dispersion analysis of shallow crustal structures north of bukit bunuh, lenggong, perak
publisher Universiti Teknologi PETRONAS
publishDate 2015
url http://utpedia.utp.edu.my/18256/1/Final%20Dissertation_16551_SarahMuhammadTermizi.pdf
http://utpedia.utp.edu.my/18256/
_version_ 1741195321514393600
score 11.62408

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