The document covers the processes influencing coastal landforms, including waves, tsunamis, tides, and storm surges. It details coastal erosional landforms such as shore platforms and cliffs, as well as depositional landforms like beaches, dunes, and coral reefs. The lecture aims to provide an understanding of the coastal and marine environment through these geological features.

1. COASTAL LANDFORMS
GEE-513 Coastal and Marine Environment
Course Coordinator:
Md. Tariqul Islam
Lecturer
Department of GEE,SUST
Prepared by: Sudipta Roy

2. IN THIS LECTURE
Processes that Influence Coastal Landforms
Coastal Erosional Landforms
Coastal Depositional Landforms

3. PROCESSES THAT INFLUENCE COASTAL
LANDFORMS
 Waves
 Tsunamis
 Tides
 Storm Surges

4. WAVES
Fig: Terms Associated with Waves

5. WAVES
Fig: Kinds of Breaking Waves From
High Speed moving Picture

6. TSUNAMIS
Tsunamis are commonly
produced by faulting of
the sea floor, and much
less commonly by
volcanic eruptions,
landslides or slumping,
or by impacting asteroids
and comets.

7. TIDES
Tides are the movement
of water bodies set up by
the gravitational
interaction between
celestial bodies, mainly
the Earth, the Moon, and
the Sun.

8. GLOBAL PATTERN OF TIDAL RANGE (SPRING TIDE)

9. STORM
SURGES
Storm surges occur
when strong onshore
winds build up coastal
water to an
exceptionally high level
for a few hours or days,
and are most
pronounced when they
coincide with high
springtides.
(Fig: Storm Surges in
Port Hedland, New
Australia

10. COASTAL EROSIONAL LANDFORMS
 Shore Platforms and Plunging Cliffs
1. Sloping Shore Platforms
2. Horizontal Shore Platforms
3. Plunging Cliff
 Landforms of Cliffs and Platforms
1. Cliffs
2. Caves
3. Stack
4. Arch

11. COASTAL EROSIONAL LANDFORMS

12. SHORE PLATFORMS AND PLUNGING CLIFFS

13. SLOPING SHORE PLATFORM YORKSHIRE,
ENGLAND

14. HORIZONTAL SHORE PLATFORM KAIKOURA
PENINSULA, NEW ZEALAND

15. LANDFORMS OF CLIFFS AND PLATFORMS
1. Cliff

16. 2. CAVES

17. 3. SEA ARCH AT FLAMBOROUGH HEAD,
YORKSHIRE

18. 4. SEA STACK AT FLAMBOROUGH,
YORKSHIRE

19. COASTAL DEPOSITIONAL LANDFORMS
 Beaches
 Splits, Barriers and Related Forms
 Coastal Sand Dunes
 Cheniers
 Estuaries
 Marine Deltas
 Coral Reefs and Atolls

20. COASTAL DEPOSITIONAL LANDFORMS

21. CHENIERS

22. ESTUARIES

23. COASTAL SAND DUNES

24. MARINE DELTA

25. CORAL REEFS AND ATOLLS

26. THANK YOU