Profile Characteristics of the Beaches Adjacent to Muddy Seabed in the Headland Bays
HUANG Shi-chang
YAO Wen-wei
LIU Xu
WU Chuang-shou
Abstract：T he investigations of typical beach profiles in the headland bays along the Zhe‐jiang coast show that a clear boundary of sand and mud is present between beach and muddy seabed .The surface material of the beaches shows little change in grain size from north to south ,with a medium diameter ranging between 0 .15 and 0 .25mm .The beach face shows a single slope ,ranging from 1∶15 to 1∶30 .The slope of the beaches is re‐lated to the wave power .If the wave is strong in the front of the beaches ,the beach face is gentle ,and otherwise ,it is steep .The degradation of the beaches is reflected by trun‐cating ,coarsening and argillization .T he truncation of the beaches causes the decrease of beach area and the undersupply of middle and fine sands .T he digging of fine sand or the local coastal engineering w hich causes the change in dynamic conditions of sediment transport can lead to the coarsening of the beach surface .The weakening of the hydro‐dynamic conditions in the headland bays can easily make the sand‐mud boundary line up‐lifting and cause local argillization .The excessively digging of sands can cause the bea‐ches to disappear and become mud flats .
Keywords：Headland bay beachprofilesand diggingdegradation
Publication Date：2016-01-01
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：9( 1-9 )