Coastal Processes ~ erosion, transport & deposition

Slides:



Advertisements
Similar presentations
Features of EROSION & Features of DEPOSITION
Advertisements

Wave Erosion 16.2 Review.
CH 16 The Dynamic Ocean Ocean water is in constant motion and powered by many forces Forces include wind, Coriolis, gravity, density differences Ocean.
Coastal Erosion and Management At Reculver In Kent
Wave action is the primary means of erosion along coastlines.
Waves, Beaches, and Coasts Prepared by Betsy Conklin for Dr. Isiorho.
COASTAL LANDFORMS.
Chapter 15 Section 3 By- Robert Sterling, Sam Dixon, Ryan McCarthy, Mikaela Cormier, and Sarah Fournier.
FEATURES OF SEA EROSION AND DEPOSITION
The Sea Creator and Destroyer.
Section 2: Wave Erosion Preview Key Ideas Shoreline Erosion Beaches
1.5Understand how ocean waves and currents change the face of coastal areas.
Shores and coastal processes. Goal To understand how coastal processes shape shores and coastlines and how these processes affect people.
Oceans Ocean Topography Physical Structure of the Ocean.
16.3 Shoreline Processes and Features
WAVES. HOW DO WAVES FORM =The energy in waves come from wind that blows across the water’s Surface.
Glacier Landforms Wave Erosion Shorelines are being constantly eroded by waves, tides, and chemical weathering. Sea cliffs are produced.
Welcome to Science 11/29 Come up to the cart and carefully select a cup of water.
Coastlines. I. Waves A. Wave anatomy I. Waves A.Wave anatomy B. Wave Erosion Corrosion, 2) Abrasion, 3) Hydraulic Action.
Erosion by Wind and Waves Ch. 16. Wind Deposition when the wind stops, it drops its load.
By Wind and Waves. Review Any natural process that removes sediments and carries them away from one place to another is called erosion. Gravity is the.
Wind and Wave Erosion. How is wind abrasive? It carries sand grains that grind and scour anything that they hit.
Wave Erosion and Deposition
Chapter 16 The Marine Environment. Longshore currents Waves usually approach the beach at an angle Water recedes parallel to the beach. Waves usually.
Waves and Coasts waves Agents of erosion as get closer to shore: –wavelength decreases –velocity decreases –amplitude increases –in shallow water,
Erosion and Deposition
Coasts.
Coastal Processes. - Creating waves - Constructive waves - Destructive waves - Processes of erosion - Processes of transportation - Longshore drift -
Coastal Features Headlands and Bays A headland is an area of land which juts out to sea and is surrounded by sea on three sides. Headlands form in coastlines.
Coastal Regions. Waves cause coastal features such as Arches, Caves and Inlets. Headlands (shorelines that project into the ocean) erode much faster compared.
What are sub-aerial processes and why are they important? What processes of erosion operate at the coast? What landforms are created by erosion? What.
Chapter 16 The Marine Environment. BEACHES SLOPING BAND OF LOOSE SEDIMENTS THAT IS MOVED AND DEPOSITED BY WAVES. –BEACH DIFFERENCES: HAWAII - BLACK BEACHES.
Coasts Areas where the land meets the sea…... A shore (or shoreline) is the place where the land meets water (between low tide line and high tide line),
Warm Up 1)Which of the following is a tidal current? a. spring tidec. neap tide b. flood tided. both a and c 2)The smallest daily tidal range occurs during.
What forces shape a shoreline?
COASTAL EROSIONAL AND DEPOSIONAL FEATURES
Coasts. Wave erosion coasts formed by the force of waves as they strike the land the waves strike the land and pieces of rock are broken off the wave.
Coastal landforms LS: Explain the formation of erosional coastal landforms using vast key words. Describe the process of longshore drift and describe the.
Erosion and Deposition
Headlands and Bays Coastal Features
Wave action and coastal landforms
Shoreline Features and Processes
CH 16 The Dynamic Ocean Ocean water is in constant motion and powered by many forces Forces include wind, Coriolis, gravity, density differences Ocean.
Coastal Processes WHAT am I?
Warm-up Week 4 The vertical distance between trough and crest is called the ____. a. wave height c. fetch b. wavelength d. wave period A fetch is _________.
Theme 2. The natural environment 2. 1 Plate tectonics 2
Waves and the Shore.
Shoreline Processes and Features
16.3 – Shoreline Processes and Features
What do we call the area where land and a body of water meet?
Wave refraction and waves breaking into surf
Shoreline Features.
How do waves erode and deposit sediment?
Warm-up Week 4 The vertical distance between trough and crest is called the ____. a. wave height c. fetch b. wavelength d. wave period A fetch is _________.
The Restless Ocean.
“Shoreline Processes”
Transportation and deposition
L.O: To know and explain how features of deposition are formed.
Erosion by Wind and Waves
Coastal Zones: Erosion
Wave Trains Waves that travel in groups.
10.1 Shoreline Erosion and Deposition.
Headlands and Bays Coastal Features
Wave Erosion Chapter 4.3.
Shoreline Processes and Features Outline
Shoreline Processes and Features
Coastal Processes.
Presentation transcript:

Coastal Processes ~ erosion, transport & deposition 12.1 CA NC

Erosion http://geobytesgcse.blogspot.com/2007/08/coastal-processes-erosion-transport-and.html

Erosional processes Abrasion = continuous tumbling reduces rock to sand grains Solution = salt dissolves some of the rock Scouring = wave swirls at base of cliff & loosens rock

Erosion Erosional processes in action http://www.bbc.co.uk/schools/gcsebitesize/geography/coastal/coastalprocessesrev3.shtml

Erosional Features Sea cliff Sea cave Sea arch Sea stack Terrace

Sea cliff Navassa Island, Caribbean Sea Forms when waves erode rock http://coastal.er.usgs.gov/navassa/photos/ep/hike/CliffE.jpg

Sea cave Short Sands Beach, Oregon Hole eroded at base of cliff http://web.cecs.pdx.edu/~walpole/pics/kayak/falcon/cave3.jpg

Sea arch Hawaii Sea cuts through headland http://upload.wikimedia.org/wikipedia/commons/e/eb/SeaArchHawaii.jpg

Sea stack County Mayo, Ireland Isolated column of rock http://ts1.mm.bing.net/images/thumbnail.aspx?q=1023555809064&id=45685568345e0ba48cec1d6807ea14ba&url=http%3a%2f%2fwww.visualphotos.com%2fphoto%2f2x4004071%2fdoonbristy_sea_stack_downpatrick_head_ballycastle_1813001.jpg

Sea terraces Haiti Flat platforms at water height http://www.amishkin.com/wp-content/uploads/2010/03/P1000346-Large.jpg

Features

Transport Material eroded by the sea is moved along the beaches.

Longshore drift Longshore drift illustration http://www.bbc.co.uk/schools/gcsebitesize/geography/coastal/coastalprocessesrev4.shtml Waves approach beach at angle Sand moves in zig zag motion Creates longshore current Current keeps sand moving until it hits a change or structure, then it drops out.

Longshore drift diagram http://cgz.e2bn.net/e2bn/leas/c99/schools/cgz/accounts/staff/rchambers/GeoBytes%20GCSE%20Blog%20Resources/Images/Coasts/Longshore_Drift.jpg

Deposition Sand deposits form where amount of rock moving toward shore is greater than amount moving away.

Depositional Features Beach Lagoon Tombolo Barrier island

Beach Emerald Isle, NC http://www.tripadvisor.com/LocationPhotos-g49113-Emerald_Isle_North_Carolina.html

Lagoon Vegetation is red; water is blue (satellite image)

Tombolo Bar that extends out into ocean, but remains connected to mainland. web.macam.ac.il web.macam.ac.il

Barrier Island http://www.frf.usace.army.mil/outerbanksaerialflight/Index.htm

Barrier Islands Occur on east coast of USA Isolated dunes become islands Parallel to shore Associated features: Sound (also called bay or lagoon) Tidal inlets Tidal flats Estuaries

HUMAN EFFECTS ON COASTLINES

Homework Read pages 342 - 347

Output Draw a block diagram of the east coast and include the features of the beaches. Draw a block diagram of the west coast and include the features of the beaches.