Résumé
190
Fig. 11Seafront of Boumerdes between 1980 and 2021.
- The coastline of Zemmouri El Bahri
The recession of the coastline from 1957 to 1980 has been moderate and irregular along the
coastline of Zemmouri El Bahri (-0.5 to -2.8 m / year). From 1973 to 2006 the recession was
maximum (locally more than 5 m/year). Since 2006 the erosion has weakened (on average 0.7
to 1.2 meters per year), but it has become very irregular along the coast of Zemmouri El
Bahri. Some stations of the coast have experienced, on the contrary, between 1980 and 2006
of the contributions of sand leading to the fattening of the coast, this is the case of the stations
of the beaches of Sghirette and Figuier East. From 2006 to 2014, the trend of the recession
continues virtually on the entire coast (see Fig.12).
The net rate of change of the coastline between 1957 and 2017 has been stable; we note an
average change of -0.17 m / year.
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