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The Application of Shallow Seismic Refraction Method to Study the Dynamics Properties of Soil in Atbara Area, Sudan
Current Issue
Volume 5, 2018
Issue 3 (September)
Pages: 117-124   |   Vol. 5, No. 3, September 2018   |   Follow on         
Paper in PDF Downloads: 21   Since Sep. 13, 2018 Views: 234   Since Sep. 13, 2018
Khalda Yassin Ibrahim, Department of Seismology, Remotesensing and Seismology Authority, National Centerfor Research, Khartoum, Sudan.
Abd Alhafiz Gad El Mula, Department of Geology, Faculty of Science, Khartoum University, Khartoum, Sudan.
Abu Elela Amin Mohamed, Department of Seismology, National Institute of Astronomyand Geophysics, Cairo, Egypt.
Insaf Babiker Sanhouri, Department of Geology, Faculty of Science, Khartoum University, Khartoum, Sudan.
Atbara is located at the confluence of the river Atbara which descends from the Ethiopian highlands and the main Nile. This region witnessed in the last few decades development regarding buildings of many industrial activities specially regarding a lot of cement factories around the town. Shallow seismic refraction measurements are carried out in Atbara area to define subsurface layering and dynamics characteristics of soil. In this paper ABEM TERRA LOC MK6 system is used and a set of profiles with a 24 channel for vertical geophones was used to generate P-waves. The data were recorded on a seismograph and later downloaded to computer for analysis of the first-arrival times to the geophones from each shot position using recent software. Travel-time versus distance graphs were constructed, velocities and the depth to the layers were computed. The P-wave for the subsurface layer was determined and also the S-wave velocities in m/s was calculated based on the P-wave velocity. Interpolation map and histogram were constrcted for the wave velocity. Finally, it could be conclude that the shallow seismic refraction is one of the most important techniques that used to study the soil dynamics and mechanics properties of the subsurface layers.
Shallow Seismic Refraction, P-wave Velocity, S-wave Velocity, Travel Time Dictanse Curve, Velocity Model, Interpolation Map
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