284
channel. This generated a change in the marine dynamic since before of the construction, the system could be considered, from the morpho-dynamics perspective,
as in stable equilibrium.
After the mentioned event, the coastal system presents the natural tendency to
adjust to new physical conditions trying to restore its state of equilibrium, but when
it is altered, the feeding mechanism does not allow returning to the initial condition.
This entails to the new configuration with a coastal bar and body of water in its upper
part, with islands and internal lagoons generated during the events of Magdalena
River rise. However, the fact of losing the main source of sediment brings associated
unexpected effects since the marine environment lost its capacity of self-generation
and it is erode continuously; so it can define that until now, the beach of Mallorquín
Lagoon presents a metastable equilibrium. This is an indicator of the close relation
between the river and the coastal zone near to the estuary, including the lagoon.
The physical parameters, which intervene in the formation of the configuration
in plant for the wetland bar, are very different; but it could demonstrate that the
longitudinal transport and the washing material in transversal direction are more
relevant elements for the configuration of a costal system.
At present, the coastline of all nations that have border with the ocean is subject
to erosion and sedimentation. As it was mentioned before, the coastal zone is a
dynamic environment where many processes from the environmental, physical and
biological perspectives occur. In consequence, any intervention made will produce
Fig. 9.3 Hystoric coastline modifications (Source: Martínez et al. 1990)
G.D. Rivillas-Ospina et al.
channel. This generated a change in the marine dynamic since before of the construction, the system could be considered, from the morpho-dynamics perspective,
as in stable equilibrium.
After the mentioned event, the coastal system presents the natural tendency to
adjust to new physical conditions trying to restore its state of equilibrium, but when
it is altered, the feeding mechanism does not allow returning to the initial condition.
This entails to the new configuration with a coastal bar and body of water in its upper
part, with islands and internal lagoons generated during the events of Magdalena
River rise. However, the fact of losing the main source of sediment brings associated
unexpected effects since the marine environment lost its capacity of self-generation
and it is erode continuously; so it can define that until now, the beach of Mallorquín
Lagoon presents a metastable equilibrium. This is an indicator of the close relation
between the river and the coastal zone near to the estuary, including the lagoon.
The physical parameters, which intervene in the formation of the configuration
in plant for the wetland bar, are very different; but it could demonstrate that the
longitudinal transport and the washing material in transversal direction are more
relevant elements for the configuration of a costal system.
At present, the coastline of all nations that have border with the ocean is subject
to erosion and sedimentation. As it was mentioned before, the coastal zone is a
dynamic environment where many processes from the environmental, physical and
biological perspectives occur. In consequence, any intervention made will produce
Fig. 9.3 Hystoric coastline modifications (Source: Martínez et al. 1990)
G.D. Rivillas-Ospina et al.