The effect of dynamic topography changes on the coastal area along the Southern Levantine sub-basin off Egypt

Abstract EN

The current study analyzes recent changes in the daily gridded dynamic topography (DT) along the southern Levantine subbasin over the period 1993-2010.

Daily DT is correlated with sea surface temperature to evaluate the surface thermal effect on DT changes.

Moreover, highly accurate digital elevation data is used to study the land elevation above the mean sea level to monitor the most threat places to the projected scenarios of DT changes.

The result indicate that sea level rise is possible a nd that it would impact the Nile Delta region significantly due to the joint occurrence of significant sea level increasing trend (current trend=3.5 cm decade-1 and expected to continue in future) and low landed (25% of its area especially to north east is equal or under mean sea level).

Generally, increasing of 0.5 m of DT is expected in the early 22nd century and will act to destroy 25% of Nile Delta region in case of no adaption action is taking.