Estimation of Crustal Structure Beneath Nile Delta Region from the Spectrum of P Wave
 
Ali Ahmed Gharib, Professor
National Research Institute of Astronomy and Geophysics, Egypt
 
Gaber Hassan Hasseip, Professor
National Research Institute of Astronomy and Geophysics, Egypt
 
Ahmed Ali Hosnney, Associate Professor
National Research Institute of Astronomy and Geophysics, Egypt
 
Gad El Kareem Mohmed, Associate Professor
National Research Institute of Astronomy and Geophysics, Egypt
 
Iman Farag Hassan, Associate Professor
National Research Institute of Astronomy and Geophysics, Egypt
 
Yaseen Mahmoud Mostfa, Ph.D.
National Research Institute of Astronomy and Geophysics, Egypt

Abstract: 

The crustal velocity structure beneath Nile Delta region is derived using the spectral ratio of P-wave. The applied tool result shows three major crustal parts: upper crustal part followed by middle crustal part underlain by lower crustal part followed by most upper mantle part.

This study is Aiming to construct crustal structure models beneath accelerometers sensors in Nile Delta region in order to obtain general crustal structure model beneath Nile Delta region using transfer function tool.

However, Transfer function tool (TF) could be applicable with accelerometer seismic data where it is first time for any seismologist to use acceleration seismic data for modeling crustal structure in Egypt.

The obtained crustal model shows three major )upper, middle and lower crustal parts)  with four distinguishable  layers above  the upper most mantle part where the  p-wave velocity is 3.43 km/sec for the first 2.4 km as a soft sediment underlain by thicker and hard rock (Hard deposits) with P- wave velocity of 4.97 km/sec. The thickness of the second layer (basement) is 6.8 km. Those two layers represent upper crustal part which is unconsolidated material. The third layer shows P-wave velocity of 5.92 km/sec with 7.15 km thickness which presented the Middle crustal part. The fourth layer shows P-wave velocity of 6.8 km/sec with thickness of 16.33 km as a lower crustal part above MOHO DIS. part at depths ranging from 27 to 36.5 KM.

 

 

Journal of American Academic Research 

© 2019  Copyright by Journal of American Academic Research. All rights reserved.

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