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Detection of subsurface faults with seismic and magnetic methods

تحديد الفوالق التحت سطحية باستخدام طريقتي السيزمية الانكسارية و المغناطيسية الأرضية

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Abstract

In this work, we used seismic refraction and magnetic methods to find the extension of a known subsurface fault and delineate for the existence of many others. Combination of both seismic refraction and magnetic method give a better subsurface view, where both seismic and magnetic methods can detect fault locations; however, fault thrown and subsurface layering will be better detected by seismic method, while magnetic method will provide a better lateral view of the faulting system in the study area. Seismic refraction shows that at least two fault plans exist in the subsurface; magnetic results supported seismic results and suggested the existence of several small fault plans in the study area.

الملخص

في هذه الدراسة تم استخدام طريقتي السيزمية الانكسارية و المغناطيسية الأرضية لإيجاد و تحديد امتداد احد الفوالق الطبيعية الموجوده تحت سطح الأرض و محاولة تحديد فوالق أخري إن وجدت. مزيج من كلا من طريقتي السيزمية الانكسارية و المغناطيسية الأرضية تعطي صورة أفضل و أوضح لما تحت السطح . حيث أنه يمكن لكلا من الطريقتين تحديد أماكن الصدوع و الفوالق التحت سطحية . يمكن تحديد رمية الفالق بطريقة أكثر وضوحا" و سهولة باستخدام الطريقة السيزمية الانكسارية . بينما تقوم الطريقة المغناطيسية الأرضية بتوفير صورة أفضل عن التوزيع الأفقي للفوالق الممكن تواجدها تحت سطحيا" . و لقد أوضحت الدراسة السيزمية الانكسارية وجود على الأقل وجود فالقين تحت سطحيين في منطقة الدراسة و قد عضتت قياسات المغناطيسية الأرضية نتائج القياسات السيزمية الانكسارية كما ارجحت وجود مجموعة أخري من الفوالق الطبيعية التي يمكن تواجدها في منطقة الدراسة

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Authors and Affiliations

  1. Department of Geophysics, Faculty of Science, Cairo University, Cairo, Egypt

    Sherif M. Hanafy

  2. National Research Institute of Astronomy and Geophysics, Helwan, Cairo, Egypt

    Essam Aboud & H. S. A. Mesbah

Authors
  1. Sherif M. Hanafy
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  2. Essam Aboud
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  3. H. S. A. Mesbah
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Correspondence to H. S. A. Mesbah.

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Hanafy, S.M., Aboud, E. & Mesbah, H.S.A. Detection of subsurface faults with seismic and magnetic methods. Arab J Geosci 5, 1163–1172 (2012). https://doi.org/10.1007/s12517-010-0255-6

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  • DOI: https://doi.org/10.1007/s12517-010-0255-6

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