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Abstract
The northern Red Sea Rift including the Suez Rift constitutes an active rift in the last stages of continental rifting which is beginning to undergo to oceanic seafloor spreading. The main targets of this work are studying the local active seismic zones of the northern Red Sea region and their focal mechanism solutions for some selected large recent earthquakes. A high-resolution 3-dimensional gravity and magnetic modeling supplemented with the seismic information has been used to establish a possible crustal thickness and density distribution between the upper part of the crystalline basement and the Moho. Moreover, the magnetic evidence for understanding the sea floor spreading process along the Northern Red Sea Rift is discussed.