#TITLE_ALTERNATIVE#
Various methods have been developed to obtain information about the layer of earth. One method that is developed is seismic tomography. This method requires an accurate forward modeling to produce a good image. To improve accuracy, wave is not considered to propagate in straight line but scattered....
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| Format: | Final Project |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/10399 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | Various methods have been developed to obtain information about the layer of earth. One method that is developed is seismic tomography. This method requires an accurate forward modeling to produce a good image. To improve accuracy, wave is not considered to propagate in straight line but scattered. Method used in the travel time modeling on this fmal project is finite difference using expanding wave front. These methods have high accuracy and apply the Fermat principles in the process of modeling the wave propagation. Then the value Rytov scattering and Fresnel zone at each point on the grid is calculated from the results of this travel time.<p>Modeling of Rytov scattering and Fresnel zone is done in the frequency range from low to high frequency. Solutions of this calculation will shape ellipsoids depend on the frequency of the waves. When the frequency is higher, solution of Rytov scattering become smaller and Fresnel zone will be more like a narrow ray path. To test the performance of the program in the Rytov scattering and Fresnel zone modeling, the geological model used was the two-layer model with a high velocity contrast. |
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