Field measurements of bottom boundary layer processes and sediment resuspension in the Changjiang Estuary

被引：0

作者：

何青

李九发

李炎

金惜三

车越

机构：

来源：

Science China Chemistry | 2001年 / S1期

关键词：

bottom boundary layer; sediment resuspension; roughness; shear stress; Changjiang Estuary;

D O I：

暂无

中图分类号：

P737 [海洋地貌学];

学科分类号：

0707 ;

摘要：

A field observation of the hydrodynamics and the sediment resuspension in a bottom boundary layer was carried out in the Changjiang Estuary, during July-August 1997. Using bottom field research facilities, detailed measurements of near-bottom currents and suspended sediment concentration distribution within 1.0 m above bed have been obtained in the Changjiang Estuary——a high concentration estuary. An Acoustic Suspended Sediment Monitor (ASSM) wasused to observe near bed sediment resuspension processes. In addition, the log-profile method was applied to estimating hydraulic roughness Z0 and bottom shear stress values (or friction velocities u). Further understanding of sediment suspension mechanics and hydrodynamic characteristics will require the long-term measurements of near bed processes.

引用

页码：80 / 86

页数：7

共 6 条

[1]

Acoustic profiling of fine suspension concentration in the Changjiang estuary[J] . Z. Shi,L. F. Ren,L. J. Hamilton.Estuaries . 1999 (3)

[2]

Across-shelf variations in bed roughness, bed stress and sediment suspension on the northern California shelf[J] . L.D. Wright,S.-C. Kim,C.T. Friedrichs.Marine Geology . 1999 (1)

[3]

Biological mediation of bottom boundary layer processes and sediment suspension in the lower Chesapeake Bay[J] . L.D. Wright,L.C. Schaffner,J.P.-Y. Maa.Marine Geology . 1997 (1)

[4]

Tests of bed roughness models using field data from the Middle Atlantic Bight[J] . J.P. Xu,L.D. Wright.Continental Shelf Research . 1995 (11)

[5]

Understanding fluid mud in a dynamic environment[J] . Ashish J. Mehta.Geo-Marine Letters . 1991 (3)

[6]

Field observations of bed shear stress and sediment resuspension on continental shelves, Alaska and California .2 Drake,D. E. and Cacchione,D. A. Continental Shelf Research . 1986

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