how is a beach formed

how is a beach formed  ? It is also known as the beach, consisting of sediments along the sea or Lake shore, the form and borders of the sea processes, the type of sediment and the accumulation rate of the Sandbox region. There are three main types of beaches. Firstly, a sediment strips extending along the rocky shores are in the form of the blade; Secondly, the outer edges of the plains consisting of the deposits carried by the sea or streams (open beaches); The third kind of sandy beaches, which represent quite a different characteristic, are in the form of narrow sediment sets, extending dozens, even sometimes hundreds of kilometers along the shore. These sets separates the lagoons from the open sea and are cut with small games created by the tides. Some sedimentary front areas, such as Tomb Olo (which connects a candidate to the mainland), are also defined as sandy beaches (foreign).

What is sandy beach, what does the beach mean


The upper border of a lively sandy beach is the most load ¬ SEK level that reaches the sea during large storms. The lower border of the beach is below the water level, but it can be determined if there is a distinct boundary between the sediment layer and the bare surface of the rocky floor. If the area occupied by the sediments extends to the distant depth, the bottom of the sand is the cut, where even the most powerful waves cannot be dragged. This limit is approximately one third of the approximate wavelength or ten times the depth of the wave height.


The profile of a lively beach shows great changes. It depends on the shape and size of many factors, e.g. wave parameters, Tidal heights, Tortuiîann composition and distribution. But there are some beach forms that I often come across. The is located on a coastal redwood with the remaining rear incision above the sea level; A number of backsides can also be found on the coastal ridge or high flatness, which is caused by Daigalann during large storms. The surface of this slope is inclined towards the sea. Another common type of profile is the relatively steep front slope form; If this is the lower part of the slope (over 2 m), there may be more than 1 km of front slopes with plenty of sandy and relatively shallow-based sandy beaches. Another type of sandy beach is in the form of one or many submarine coastal sets, which stretches along the sandy shore and is cut in place with potholes.

There is also a secondary level of surface form in the sand. These are oscillating waves, the tide grooves, or the small creek, which is often seen in the sand (concave) hooks to the sea.

In places where strong waves are perpendicular to the shore and on a regular basis, the submarine sets (cord) sometimes disperse and the convex to the sea wins a large structure in half-moon form. Such surface forms point to the large vortex of vertical axis, consisting of the result of the water-back movement in the region. The retreat of the water often occurs in turbulent linear currents in the mower. These can be strong enough to wear deep grooves on the submarine slopes and sometimes cause the entire system to dissipate the submarine sets.

In most countries, the wind influences the dynamics of the beach in a strong way. The sandy beach is open to the influence of the sea winds and the sand by the wind creates the dunes in the back of the beach. After a while, they combine to form the front dunes; If there is enough sand on the beach, there are a number of dunes in this way. When the amount of sand is too large, the dunes change and end up in the low plains and can cover fertile lands, forests and buildings.


When sand stone stops in the region where the dunes occur, gaps occur on the ridges parallel to the shore. In such areas, the hills of parabolic dunes facing the shore emerge. After a long period of time when the Bunlann position is secured, the peaks of the Parabat can be disrupted by the wind and thus a series of ridges parallel to the direction of the wind.


The sand of sandy beaches in temperate enema contains mainly quartz, base-, feldspar and heavy minerals that are small. In tropical regions, the Kalkerli sandy beaches consisting of the skeletal residue of the sea creatures and the sediments such as oolites are quite Sagittarius.


Sometimes, the ground layers of the sand are bonded to each other (cement), which is deposited from the underground sultans. This usually leads to the leaking of fresh water from the connection behind the beach. If the beach is worn and retracted, the cement layer emerges; These areas, called Rocky beach, are common in tropical regions, on the shores of the Mediterranean, the Black Sea and the Caspian Sea.

The practical significance of the sand is not limited to the use of coastal protection or holiday destinations. The mechanism of separation of the waves and currents of the shore by the grain of the load, the heavy mineral (the specific weights above 2.7) allows the detorization of the Derishki. Each beach has a thin, dark-colored sand cover visible to the eye; This cover contains precious metals such as some heavy minerals, Titan, zirconium, German ¬ ium, tin, uranium and gold. In many regions, these precious metals are a very important proportion to the mik industry. India, Brazil, Japan, Australia. In Russia and Alaska, these alluvial sediments are processed to obtain valuable me ¬ tal. Heavy mineral derişki can also be removed from submarine slopes with comb vessels.

How the beach occurs, what is the nature of the beach


Note: This page has been translated. Could be a word error. Please consult your specialist

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