how are tombolos produced? a. they are produced when an island or other object b
ID: 235910 • Letter: H
Question
how are tombolos produced?
a. they are produced when an island or other object blocks the wave action behind it. This disrupts or slows the longshore current and sand is deposited. Eventually the sand reaches out to the object to create a tombolo.
b. stream deposit sediments(mostly sand) out to islands offshore. when the sand deposit is big enough to extend above sea level it is called tombolo.
c. they are created when sand bars extend completely accross the mouth of a bay
d. tombolos are the result of an emergent coast. what was a near shore island upon uplift becomes connected to the land by a broad flat surface, called a tombolo.
Explanation / Answer
a.They are produced when an island or other object blocks the wave action behind it.This disrupts or slows the longshore current and sand is deposited. Eventualy the sand reaches out of the object to create a tombolo
When an island is connected to mainland through a narrow piece of land eg spit or bar known as tombolo and is a depositional landform. It is formed when the sand accretion takes place in the lee of the island and the shoreline move towards the island. Here the sand deposition occurs due to decrease in energy of wave and longshore drift. The sediment distribution in the tombolo are fining upward sequence or fine towards the surface. They are formed by wave refraction and diffraction as well as unidirectional long shore drift.
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