GROUND PENETRATING RADAR DATA ANALYSIS BY USING MODELLING WITH FINITE DIFFERENCE METHOD: CASE STUDY IN BELAWAN PORT

  • Hans Elmaury Andreas Siregar Bidang Batubara - PSDMBP
Keywords: Ground Penetrating Radar, numerical simulation, finite difference, processing technique

Abstract

Ground Penetrating Radar (GPR) is one of non destructive geophysics methods which is appropriate used to identify subsurface object with depth penetration less than 70 meter. High data resolution as well as relatively unprolonged and manageable data acquisition make this method becoming convenient supporting method to increase near surface data for other geophysics methods.  The depth penetration of GPR varies with the frequency of antenna. Getting optimum depth penetration before field acquisition data some numerical simulation should be accomplished in order to perceive antenna frequency and processing technique that used, so the depth of target zone can be achieved. The Finite Difference (FD) is one one of numerical anaysis technique that mostly used to determine differential equation. By using FD method, the solution of electromagnetic waves equation can be obtained and the image of numerical simulation can be displayed. In line with this radar image from numerical simulation, the relationship of frequency and depth penetration on the media used is acquired.  Media used in this simulation are sand, clay, sandy clay, clayey sand and concrete. Through numerical simulation from this research, we conclude that GPR method able to distinguish boundary layer among each medium. Processing technique is accomplished to comprehend suitable  processing stages for high resolution radar image that can be interpreted. Data acquisition and processing technique from simulation have been implemented in field experiment and very helpful to apprehend GPR characteristic signal in subsurface map in Belawan port.

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References

Annan, A.P., 2003, Ground Penetrating Radar Principles, Procedures & Applications. Sensors & Software Inc., Canada, 278 h.

Annan, A.P. and Davis, 1989, Ground Penetrating Radar. Workshop Notes: Sensor & Software Inc., Canada.

Baker, G. S. and Harry, 2007, Stratigraphic Analysis Using GPR: Geological Society of America.

Buchanan, W.J., 1996. Analysis of Electromagnetic Wave Propagation using the 3D Finite-Difference Time-Domain Method with Parallel Processing. Thesis for the degree of Doctor of Philosophy at Napier University, h. 1-12.

Joll, H.M., 2001, Ground penetrating radar: theory and application, Elsevier Publication.

McCann, et al., 1988, The Geology of Central Europe: The Geological Society.

Müller, K., 2005, Modelling of GPR Wave Propagation and Scattering in Inhomogeneous Media. Thesis for the degree of Master at University of Oslo, h. 13-16.

Reynold, J. M., 1997, An Introduction to Applied and Evironmental Geophysics : Jhon Wiley & Sons, Chicester, England.

Sandmeier, K. J., 1998, ReflexW Version 5 Reference manual.

Siregar, H.E.A., 2012. Identifikasi dan Analisis Pemodelan Fisik Pada Struktur Caisson Dermaga dan Struktur Beton Rumah Tinggal Dengan Menggunarakan Metode Ground Penetrating Radar (GPR). Skripsi Sarjana di Program Studi Teknik Geofisika Fakultas Teknik Pertambangan dan Perminyakan Institut Teknologi Bandung, h. 31-33.

Sulaiman, A., dan Taufik, M., 2010, Pemodelan georadar 2D dengan metode beda hingga domain waktu. Jurnal Sains dan Teknologi Kebumian Indonesia,1, h. 31-41.

Published
2016-05-10
Section
Buletin Sumber Daya Geologi