Résumé
179
the dynamic balance of the coastal environments (Daniel et al. 1996). Understanding coastal
kinetics is essential in the following areas: the coastline's development because this coveted
but fragile area is home to a large part of the population and economic activities.
The Algerian coastline of 1600 km is not immune from erosion. Several authors have studied
this phenomenon (Boutiba 2006, Boutiba et al. 2006, Boutiba et al. 2009, Boutiba et al. 2011).
The coast of the bay of zemmouri is an excellent site for its geographical context and the
anthropic pressure which reigns there, translated by various constructions and tourist and
industrial infrastructures. This coast, which stretches over 50km, mainly includes sandy
beaches, not exempt from this regression.
Understanding coastal evolutionary trends are necessary for coastal zone environmental
monitoring and management. (Natesan et al. 2015). Currently, it is easier to generate accurate
coastline positions using GIS software. This study analyzed the coastline evolution for 60
years of the Zemmouri Bay coastline from 1957 to 2017, using geospatial techniques with an
automatic calculation tool (DSAS). In this study, several statistical approaches were used to
determine shoreline change rates, including Endpoint Rate (EPR), Linear Regression Rate
(LRR), and Weighted Linear Rate (WLR) (Himmelstoss 2009, Moussaid et al. 2015, Natesan
et al. 2015, Ayadi et al. 2015). This work's main objective consists of mapping and
quantifying areas of erosion and accretion and assessing long-term rates of shoreline change
along the bay's coast.
2.Materials and methods
2.1.Study area
The bay of Zemmouri (e.g., bay of Courbet) is located to the Bay of Algiers' immediate east.
Widely open towards the north, it extends over some sixty kilometers (53.7 km), bounded to
the west by Cap Matifou Est and the east by Cap Djenat (see Fig.1).
The shoreline is oriented SW-NE, and its Lambert coordinates are:
* 3°13 ′ 18 ′ and 3°43 ′ 24 ′ ′ East longitude.
* 36°52 ′ 45 ′ ′ and 36°48 ′ 48 ′ ′ North Latitude.
Fig. 1 The situation of the Zemmouri bay
179
the dynamic balance of the coastal environments (Daniel et al. 1996). Understanding coastal
kinetics is essential in the following areas: the coastline's development because this coveted
but fragile area is home to a large part of the population and economic activities.
The Algerian coastline of 1600 km is not immune from erosion. Several authors have studied
this phenomenon (Boutiba 2006, Boutiba et al. 2006, Boutiba et al. 2009, Boutiba et al. 2011).
The coast of the bay of zemmouri is an excellent site for its geographical context and the
anthropic pressure which reigns there, translated by various constructions and tourist and
industrial infrastructures. This coast, which stretches over 50km, mainly includes sandy
beaches, not exempt from this regression.
Understanding coastal evolutionary trends are necessary for coastal zone environmental
monitoring and management. (Natesan et al. 2015). Currently, it is easier to generate accurate
coastline positions using GIS software. This study analyzed the coastline evolution for 60
years of the Zemmouri Bay coastline from 1957 to 2017, using geospatial techniques with an
automatic calculation tool (DSAS). In this study, several statistical approaches were used to
determine shoreline change rates, including Endpoint Rate (EPR), Linear Regression Rate
(LRR), and Weighted Linear Rate (WLR) (Himmelstoss 2009, Moussaid et al. 2015, Natesan
et al. 2015, Ayadi et al. 2015). This work's main objective consists of mapping and
quantifying areas of erosion and accretion and assessing long-term rates of shoreline change
along the bay's coast.
2.Materials and methods
2.1.Study area
The bay of Zemmouri (e.g., bay of Courbet) is located to the Bay of Algiers' immediate east.
Widely open towards the north, it extends over some sixty kilometers (53.7 km), bounded to
the west by Cap Matifou Est and the east by Cap Djenat (see Fig.1).
The shoreline is oriented SW-NE, and its Lambert coordinates are:
* 3°13 ′ 18 ′ and 3°43 ′ 24 ′ ′ East longitude.
* 36°52 ′ 45 ′ ′ and 36°48 ′ 48 ′ ′ North Latitude.
Fig. 1 The situation of the Zemmouri bay