PEMODELAN NUMERIK PERAMBATAN GELOMBANG SEISMIK DALAM MEDIUM ANISOTROP MENGGUNAKAN METODE FINITE DIFFERENCE STUDI KASUS : LAPISAN BATUBARA TERSESARKAN DAN DANGKAL-DALAM

The crustal rocks in the earth are mostly anisotropic medium. However, they are usually assumed to be isotropic because isotropy modelling is much simpler than anisotropy. There are different characters on every direction of seismic wave propagation in anisotropic medium. On the other hand, anisotro...

全面介紹

Saved in:
書目詳細資料
Main Authors: , AGUSTINA ARIYANTI, , Drs. Waluyo, M.Sc., Ph.D.
格式: Theses and Dissertations NonPeerReviewed
出版: [Yogyakarta] : Universitas Gadjah Mada 2014
主題:
ETD
在線閱讀:https://repository.ugm.ac.id/128927/
http://etd.ugm.ac.id/index.php?mod=penelitian_detail&sub=PenelitianDetail&act=view&typ=html&buku_id=69302
標簽: 添加標簽
沒有標簽, 成為第一個標記此記錄!
實物特徵
總結:The crustal rocks in the earth are mostly anisotropic medium. However, they are usually assumed to be isotropic because isotropy modelling is much simpler than anisotropy. There are different characters on every direction of seismic wave propagation in anisotropic medium. On the other hand, anisotropy modelling requires more parameter and more complicated calculation than isotropy. Nevertheless, anisotropy modelling is needed to produce more realistic seismic data. A computer program of seismic wave propagation in 2D anisotropic medium was carried out using staggered-grid fourth order finite difference method by MATLAB. This program was verified by comparing the seismogram with the analytical result. Then this program was applied in two models of coal bed, which are faulted and shallow-deep coal beds. Both of the models were built to be anisotropic and isotropic medium. Anisotropic coal bed indicated that there are differences between arrival times of seismic wave in both medium. This condition could influence processing and interpretation of seismic data result. Anisotropic medium produced higher AVO and wave dispersion effect than isotropic medium. Keywords: anisotropy, isotropy, finite difference, seismic wave