OCCURRENCE OF TRANSPORT PROCESS LITTORAL

Transport  coastwise (Longshore Transport) 

Good morning and congratulations on the move, this time it will discuss about what Sediment Transport. Sediment transport is divided into two, namely : 

1. Sediment transport blade shape on the shoreline, and 
2. Transport along the beach in the surf zone 

Said to be shaped blade because at the time the waves to the shore at an angle to the shoreline, the waves will rise to the beach and will form an angle. So that the mass of water that rises Markowitz a trajectory shaped blade and accompanied transported sediment along the coast. 

OCCURRENCE OF TRANSPORT PROCESS LITTORAL 

Transport along the beach surf zone is the sediment transport caused by the currents along the coast are generated by breaking waves. Sediment transport occurs in the surf zone. One man named Zenkovichh, Sleath, 1982 measuring sediment transport along the coast. There are two peak concentrations of sediment suspension caused by a breaking wave in the vicinity of a breaking wave and on the shoreline. High concentration near the shoreline may be caused by the motion of water shaped like a description of the shape of the saw blade. In the area of breaking waves most of the sediment transport occurs in the suspension being outside the breaking waves as bedload.
Cause trasnport sediment along the coast include : 

• Silting in the harbor. 
• Coastal erosion. 
• And so forth 

Ways that can be used to predict sediment transport along the coast: 

1. Measuring sediment discharge at the site of interest. 
2. The measurements show the basic elevation change in a given period that may provide clues about sediment transport. 
3. Well if the area has a review of the building that can capture sediment transport along the coast, such as the groin, break water, and so forth. The formula for calculating the sediment transport along the coast based on the measurement data and prototype models on the sandy beach. mentioned formula is the relationship between sediment transport and wave energy flux component along the coast of the following form : 

             Qs = K P1ⁿ

             P1 = ρ g Hb² Cb αb sin cos αb

where Is:

Qs = sediment transport along the coast (m³ / day)

P1 = component of the wave energy flux along the coast at the time of rupture (Nm / d / m)

ρ = mass density of sea water (kg / m³)

Hb = high breaking waves (m)

Cb = breaking wave propagation speed (m / d)

αb = angle dating wave rupture

K, n = constant

That's it for this time about explanation Sediment Transport and hopefully with this article is increasing knowledge on the transport of sediment. Thanks Hopefully Helpful

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Ditulis oleh Iampsh pada tanggal Tuesday, 23 December 2014