1. Erosion and Deposition Ryan, Jack, Brooke, Jordan, and Becca
Chapter 15 Section 3
Erosion and Deposition
Ryan, Jack, Brooke, Jordan, and Becca

2. Majestic Ocean Sounds

3. Erosional Features
Wave Cut Cliffs- a feature of the ocean that forms from the cutting motion of the surf against land on the coast
Wave Cut Platform- an ocean form that is composed of flat, bench-like surfaces that were left behind from receding cliffs
Marine Terraces are a type of wave cut platform that are uplifted

4. Erosional Features Sea Arches: an ocean feature that forms when a
headland is eroded and two
caves from opposite sides
join together
Sea Stacks: an ocean
feature that forms when the
top, or roof, of a sea arch
collapses

5. Depositional Features
Some depositional features originate when sediment is displaced by beach drift and longshore currents
Spits-elongated sand ridges that project from the land into the mouth of an adjacent bay
Baymouth Bars-sandbars that cross a bay entirely
Tombolos-sand ridges that connect an island to the mainland or to a different island

6. Depositional Features
swa
Sea Spit off Turtle Island, Taiwan
Tombolo in California

7. Barrier Islands:
These are low ridges of sand parallel to the coast at distances from 3 to 30 kilometers.
Most are from 1 to 5 kilometers wide and between 15 and 30 kilometers long.
Barrier Islands are formed in a few ways. Some were originated as spits and were separated from the mainland by wave erosion.
Others were formed when turbulent waters in the line of breakers piled up sand that had been scraped from the bottom.

8. Barrier Islands:
A marvelous picture of a barrier island

9. Shoreline Erosional Problems
1) Bursts of accelerated erosion
* impact the natural evolution of the coast
*impact the lives of the people living on the coast
-huge amounts of money are spent annually in order to repair erosional damage and to control erosion

10. Factors of Shoreline Erosion
These five factors influence the amount of destruction caused by shoreline erosion:
the proximity of a coast to sediment-laden rivers
the degree of tectonic activity
the topography and composition of the land
prevailing winds and weather patterns
the configuration of the coastline and nearshore areas

11. Hard Stabilization
Hard Stabilization is any form of man made structure built to protect a coast or to prevent the movement of sand along a beach. Examples include groins, breakwaters, and seawalls

12. Types of Hard Stabilization
Groin- a barrier built at a 90 degree angle to the beach to catch sand that is moving parallel to the shore
Breakwater- a structure guarding a nearshore area from breaking waves
Seawall- a barrier created to stop waves from reaching the area behind the wall. Its purpose is to defend property from the damaging power of breaking waves

13. Shoreline Erosional Problems
Alternatives to Hard Stabilization
Beach nourishment; is done by the addition of sand to replenish beaches that are eroding
Relocation; moving damaged and/or threatened buildings out of dangerous areas

14. Erosion Video

15. Works Cited
Bali Sea Arch. N.d. Photograph. Natural Arches. Web. 26 May < Indonesia-Bali.htm>.
Barrier Island. N.d. Photograph. Futurity. Web. 26 May < islands-more-abundant/>.
Baymouth Bar. N.d. Photograph. So. California. Coastal Processes. Web. 26 May <
Before and After Miami Beach Nourishment Program. N.d. Photograph. Rakontur. Web. 26 May < –>.
Erosion and Landforms Movie. YouTube. Dianarabstejnek, 11 Apr Web. 26 May <
Into the Blue Ocean Sounds:Underwater Sound Water Sounds Nature Sounds Music Sleep Music Relax. YouTube. Meditationrelaxclub, 11 Oct Web. 26 May <
Sea Spit. N.d. Photograph. Turtle Island, Taiwan. Dreamstime. Web. 26 May <
Stack. N.d. Photograph. Torre Sant'Andrea, Southern Italy. Wikipedia-The Free Encyclopedia. Web. 26 May <
Tarbuck, Edward J., and Frederick K. Lutgens. "The Dynamic Ocean." Earth Science. 11th ed. Upper Saddle River, NJ: Prentice Hall, N. pag. Print.
Tombolo California. N.d. Photograph. Tombolo California. Web. 26 May < –>.