Mud and Sand Suspension

Oral

1129 - Formation, Transport And Breakdown Of Near-Bed High-Concentrated Mud Suspension Within The North Passage Of The Changjiang Estuary

Presenting Author(s)

• JG

  Jianzhong Ge

  Associate Professor
  East China Normal University

Additional Author #1(s)

• ZZ

  Zaiyang Zhou

Additional Author #2(s)

• PD

  Pingxing Ding

We applied a comprehensive tripod system integrated with multiple instruments to measure the near-bed processes of hydrodynamics and sediments at two locations near the stratified channel in the Changjiang Estuary. Our aim was to observe the formation and breakdown of CBS. The measurements detected a significant dominance of high sediment concentration in the near-bed 1-m layer: ~20 g/L at the southern site and ~45 g/L at the northern site. Strong CBS occurred under the weak tidal mixing condition and was closely related to sediment-induced suppression of turbulent kinetic energy (TKE) and enhanced stratification due to saltwater intrusion and sediment suspension.