COMPARATIVE ANALYSIS OF AMPLITUDE PRESERVED USING VELOCITY ANALYSIS OF DMO & CRS METHOD ON MARMOUSI II CASE STUDY

• Main Author: ADE KALYANA (NIM: 12313080), NGURAH
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/29611
• Institution: Institut Teknologi Bandung

Seismic processing has been a significant purpose which is to yield a subsurface <br /> <br /> imaging accurately. To obtain that particular result, the seismic data must follow a particular <br /> <br /> step called stacking, which can significantly increases signal-to-noise ratio at every trace <br /> <br /> gathers. In this research, the seismic data passes through two different stacking method, which <br /> <br /> are Common Reflection Surface (CRS) stack and Dip Move Out (DMO) stack on Marmousi II <br /> <br /> synthetic model. For th subsurface difficulties, the two stacking methods are used for overcome <br /> <br /> the conventional stacking lacks, and then the methods Post Stack Depth Migration section are <br /> <br /> compared. The methods also give better picking velocity than the conventional one, which then <br /> <br /> used for better spherical divergence correction and as an input to Amplitude versus Offset <br /> <br /> (AVO) and Amplitude versus Angle (AVA) analysis. The result section then evaluated from the <br /> <br /> reflector amplitudes. The amplitudes evaluation aims for knowing the consequences of every <br /> <br /> stacking methods that correlate to preserving amplitude. From this research, the CRS gather <br /> <br /> gives better amplitudes preserved characteristic than the DMO method.