INSTITUTE OF APPLIED & COMPUTATIONAL INSTITUTE OF APPLIED & COMPUTATIONAL MATHEMATICSMATHEMATICS

FOUNDATION OF RESEARCH AND TECHNOLOGYFOUNDATION OF RESEARCH AND TECHNOLOGYCRETE-HELLASCRETE-HELLAS

CONTRIBUTION OF IACM/FORTH IN PHASE C OF MEASURE 2.1

- Kokkinos Pyrgos shoreline evolution trend- Research solutions

Al. Pantazis (pantazis_al@yahoo.gr)

N. A. Kampanis (kampanis@iacm.forth.gr),

Th. V. Karambas (karambas@marine.aegean.gr),

KOKKINOS PYRGOS COAST

Comparison between Dossier de Candidature M2.1 and work done until now.

Face A: “Application de nouvelles methodes pour le suivi de l‘ erosion et rechargement cotier.”

Face B: “Indentification des plages en erosion en Creteet des lieux d’ accumulation de sable, optimisation du sediment disponible, creation de modeles numeriques (propagation d’ onde, courants par onde, transport de sediment quasi 3D, evolution du lit).”

Face C: “Application des modeles numeriques pour estimer les taux d’erosion et deposition, l’evolution du profil apres le rechargement a propos du transport offshore, l’evolution de la plateforme et ligne de rivage a propos del mouvemants lateraux.”

OK Bibliographical investigation of numerical models.

OK Application of Als (Hs contours, current velocities), beach processes understanding.

OK Solutions testing with beach nourishment and brakewaters.

KOKKINOS PYRGOS COAST

600 800 1000 1200 1400 1600 1800 2000 2200 2400

200

400

600

800

1000

1200

0.8 N

Current status: Wave induced current velocities for West direction winds.

KOKKINOS PYRGOS COAST

Current status - Coast evolution trend

(sequence of S, SW and W waves)

500 1000 1500 2000 2500

500

1000

Υφιστάμενη ακτογραμμήΤάση εξέλιξης ακτογραμμής

Initial coastlineEvolution trend

N

S and SW winds Accretion in the bottom of the jetties

W winds Erosion 1km east from lee jetty

KOKKINOS PYRGOS COAST

Solutions under investigation

Beach nourishment with submerged breakwaters

KOKKINOS PYRGOS COAST

Hs contours for South direction winds

600 800 1000 1200 1400 1600 1800 2000 2200 2400

200

400

600

800

1000

1200

0

0.2

0.4

0.6

0.8

1

1.2

1.4

1.6

1.8

2

Wave propagation behind breakwaters and partial reflection

KOKKINOS PYRGOS COAST

600 800 1000 1200 1400 1600 1800 2000 2200 2400

200

400

600

800

1000

1200

0.8

N

Wave induced current velocities for South direction winds with the submerged breakwaters.

KOKKINOS PYRGOS COAST

600 800 1000 1200 1400 1600 1800 2000 2200 2400

200

400

600

800

1000

1200

0.8

N

Wave induced current velocities for South - West direction winds with the submerged breakwaters.

KOKKINOS PYRGOS COAST

600 800 1000 1200 1400 1600 1800 2000 2200 2400

200

400

600

800

1000

1200

0.8

N

Wave induced current velocities for West direction winds with the submerged breakwaters.

KOKKINOS PYRGOS COAST

Solution 1 - Coast evolution trend

(sequence of S, SW and W waves)

Erosion control with accretion in the area of the structures.

But erosion trend at about 500m east from the port.

500 1000 1500 2000 2500

500

1000

Υφιστάμενη ακτογραμμήΤάση εξέλιξης ακτογραμμής

Initial coastlineEvolution trend

N

KOKKINOS PYRGOS COAST

Other combinations of solutions are running

CONCLUSIONS

West winds are prevail.

It is possible to examine various scenarios concerning construction of coastal structures and beach nourishment.

Possible construction in the future of big trade port in the area.

More combinations of submerged breakwaters will be tested.

The sand for the nourishment will be taken from the accretion areas.

Thank you