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A comparative study of seismic land data near-surface velocity model building derived by 3d traveltime tomography and dispersion curves inversion techniques / Karim Gamal Amin Mohamed Ghanem ; Supervised Sharaf Eldin Mahmoud Sharaf Eldin , Walid Mohamed Mabrouk , Ahmad Awad Saleh

By: Contributor(s): Material type: TextTextLanguage: English Publication details: Cairo : Karim Gamal Amin Mohamed Ghanem , 2017Description: 129 P. : charts , facsimiles , maps ; 25cmOther title:
  • دراسة مقارنة لاستنتاج سرعات الطبقات القريبة من سطح الأرض من المعلومات السيزمية باستخدام طريقتي التوموجرافية ثلاثية الأبعاد ومنحنيات التشتت [Added title page title]
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  • Issued also as CD
Dissertation note: Thesis (M.Sc.) - Cairo University - Faculty of Science - Department of Geophysics Summary: In an attempt to reconstruct the near-surface velocity for the shallow subsurface in the area under study using two different approaches: 3D Traveltime Tomography and Dispersion Curves Inversion (DCI), a total of 26286 shot records were used from Matruh 3D onshore seismic survey. The results clearly demonstrated that both models showed similar velocity behavior in the first 100m, however, DCI output model exhibited a high velocity layer (100 m thick) with velocities up to 5000 m/s between depth (-100 m and 0 m) compared to slower ones in the tomographic model within this depth interval. The validity of the two output near-surface models was tested through direct calculation of static corrections and running pre-stack depth migration (PSDM) on seismic test line(s)
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Item type Current library Home library Call number Copy number Status Barcode
Thesis Thesis قاعة الرسائل الجامعية - الدور الاول المكتبة المركزبة الجديدة - جامعة القاهرة Cai01.12.16.M.Sc.2017.Ka.C (Browse shelf(Opens below)) Not for loan 01010110074539000
CD - Rom CD - Rom مخـــزن الرســائل الجـــامعية - البدروم المكتبة المركزبة الجديدة - جامعة القاهرة Cai01.12.16.M.Sc.2017.Ka.C (Browse shelf(Opens below)) 74539.CD Not for loan 01020110074539000

Thesis (M.Sc.) - Cairo University - Faculty of Science - Department of Geophysics

In an attempt to reconstruct the near-surface velocity for the shallow subsurface in the area under study using two different approaches: 3D Traveltime Tomography and Dispersion Curves Inversion (DCI), a total of 26286 shot records were used from Matruh 3D onshore seismic survey. The results clearly demonstrated that both models showed similar velocity behavior in the first 100m, however, DCI output model exhibited a high velocity layer (100 m thick) with velocities up to 5000 m/s between depth (-100 m and 0 m) compared to slower ones in the tomographic model within this depth interval. The validity of the two output near-surface models was tested through direct calculation of static corrections and running pre-stack depth migration (PSDM) on seismic test line(s)

Issued also as CD

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