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Why don't longshore currents form in places were waves hit the shore head -on?
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Is longshore drift the cause or effect of a longshore current?
Angled waves create a current that runs parallel to the coatline. As waves repeatedly hit the beach, some of the beach sediment moves down the beach with the current.
If waves strike the beach what will produce?
Longshore current
What does Geosat measure?
a.the height of the ocean b. the change in the oceans land forms c.the direction and speed of the oceans currents or d.the velocity of the waves hitting the shore
What are the heavy waves caused by the hurricane called?
They are actually called a Storm Surge, and it is due to the low pressure associated with a hurruicane which causes a rise in sea surface level which is then whipped up by the strong hurricane force winds. (Rip tides, or rip currents, are strong surface currents flowing seaward from a shore in some places, and are not generally associated with hurricanes.)
What happen when surface currents meet a continent?
you get waves not tidal waves or tsunami's! You just get waves. how big they get would depend on air currents and storms
Why don't longshore currents form in places where waves hit the shore head-on?
Long-shore currents don't form in places where waves hit the shore head-on because the sand is moving in a zigzag pattern, making it at an angle.
Ocean water that moves almost parallel to shore?
This phenomenon is known as longshore currents. They are caused by the movement of waves hitting the shoreline at an angle, creating a current that flows parallel to the coast. Longshore currents can transport sediment along the coastline, affecting beach erosion and deposition.
Along what does longshore currents transport sediment?
Waves approach a shore obliquely (at an angle) due to the effects or the tides, currents the coriolis effect etc. and then retreat due to gravity straight. A good analogue is to roll a marble up a slope at an angle; it will fall more linearly on its return. Hope this helps.
Name and describe two kinds of currents that wave action can cause near shore?
Two kinds of currents that wave action can cause near shore are "Longshore Current", which is the overall direction and movement of the waves that strike the shore at an angle. The other kind of current is "Rip Currents", which are narrow streams of water that break through sandbars and drain rapidly back to sea.
What affects do water waves and currents have on beaches?
waves and currents make the shore bigger
Is longshore drift the cause or effect of a longshore current?
Angled waves create a current that runs parallel to the coatline. As waves repeatedly hit the beach, some of the beach sediment moves down the beach with the current.
Why do barrier islands run parellel to the shore?
Barrier islands form parallel to the shore due to longshore currents transporting sediments along the coast. These currents deposit sediment further away from the mainland, leading to the gradual formation of barrier islands. Over time, the islands stabilize and provide protection to the mainland from waves and storms.
How do longshore currents form?
beaches absorb waves and backwash in some areas of the coast
What creates longshore current?
Longshore currents create beaches.
Longshore current and longshore drift?
Longshore current is the movement of water nearest the coast. Usually caused by tides. Longshore drift is the movement of beach or coastal material, by longshore drift. The action of waves loosen the material, which is then moved by the current and deposited further down tide. The action is greater during storms.
How does a spit formed?
A spit or sandspit is a deposition landform found off coasts. At one end, spits connect to land, and extend into the sea. A spit is a type of bar or beach that develops where a re-entrant occurs, such as at cove's headlands, by the process of longshore drift. Longshore drift (also called littoral drift) occurs due to waves meeting the beach at an oblique angle, and backwashing perpendicular to the shore, moving sediment down the beach in a zigzag pattern. Longshore drifting is complemented by longshore currents, which transport sediment through the water alongside the beach. These currents are set in motion by the same oblique angle of entering waves that causes littoral drift and transport sediment in a similar process.
How does longshore drift happen?
The process of longshore drift is waves hit up against the sand and the sand grains are taken by the waves back into the sea and back to shore again, this is called swash ans backwash.
