An examination of estuarine lutocline dynamics /

Abstract

Location map of Jiaojiang estuary, China. Depths are in meters below lowest astronomical tide. Ml and M2 are mooring sites (Table 4.1); Cl, C2, C3 and C4 are velocity measurement and SSC profile sampling stations (Table 4.1); C6 is the site of ASSM (Table 4.1) and T1-T6 are tide stations. The region between double dotted lines is the modeled domain 4.2 A representative frequency distribution of suspended sediment (dispersed) size in the Jiaojiang estuary 81

Modeling Sediment Disposal in Inshore Waterways of British Columbia, Canada

“…τ is the critical shear stress for deposition, e τ is the critical shear stress for erosion, max M is the maximum erosion constant at is the temperature and sediment dependent fluid viscosity, and F(θ) is the temperature effect function on flocculation, F(θ)=1.777-0.0518θ, for θ=0-30 °C (Jiang, 1999). Two types of cohesive sediment beds are classified, namely newly-deposited and fully-consolidated beds.…”

“…These parameters were thus computed based on previous publications and studies. The cohesive sediment parameter were based on the works of Krone (1962), Parchure and Mehta (1985), Mehta and Li (1997), and Jiang (1999). The non-cohesive sediment parameters were based on the works of Shields (1936), Bagnold (1966), Rijn (1984aRijn ( , 1984bRijn ( , and 2001, and Wu, et al (2000).…”

Sediment Plume and Deposition Modeling of Removal and Installation of Underwater Electrical Cables on Roberts Bank, Strait of Georgia, British Columbia, Canada

“…COCIRM-SED consists of four integrated modules: circulation, wave, sediment transport and morphodynamics. The circulation module (COCIRM), developed over the past decade (Jiang, 1999;Fissel and Jiang, 2002;Jiang, et al, 2003;Jiang and Fissel, 2004;Jiang and Fissel, 2006), represents a computational fluid dynamics approach to the study of river, estuarine and coastal circulation regimes. The wave module is an adaptation of the third generation, nearshore transformation spectral wave model, SWAN.…”

3D Hydrodynamic Modeling of Sediment Dynamics on Roberts Bank, Fraser River Foreslope, Strait of Georgia Canada

“…COCIRM-SED consists of four integrated modules ( Figure 1): circulation, wave, sediment transport and morphodynamics. The circulation module (COCIRM), developed over the past several years (Jiang, 1999;Fissel, et al, 2002;Jiang, et al, 2003;Jiang and Fissel, 2004), represents a computational fluid dynamics approach to the study of river, estuarine and coastal circulation regimes. The wave module is an adaptation of the third generation, nearshore transformation spectral wave model, SWAN, developed by the Delft University of Technology.…”

“…where H [-] is a heavyside function which becomes zero if the quantity inside the square brackets becomes negative, otherwise is equal to one, cw is the bottom shear stress due to current and wave (Grant and Madsen, 1979), d is the critical shear stress for deposition, which is taken as 0.1 N/m 2 (Krone, 1962), e is the critical shear stress for erosion, max M is the maximum erosion constant at e cw 2 , , , a, b, and are the sediment-dependent empirical coefficients, is the temperature, k s, is the sediment granular density of k th sediment, ( ,s,c) is the temperature, salinity and sediment dependent fluid density, ) , ( c is the temperature and sediment dependent fluid viscosity, and F( ) is the temperature effect function on flocculation, F( )=1.777-0.0518 , for =0 30 C (Jiang, 1999). Two types of cohesive sediment beds are classified, namely newly-deposited and fully-consolidated beds.…”