Application and Comparison of Two Different Fine Cohesive Sediment Transport Models in Delft3d

Can Mud Deposits Indicate Inundation Extent of Paleotsunamis? Insights From Sediment‐Transport Simulations for Sand and Mud

“…Thus, the bed shear stress values of cohesive sediments for erosion and deposition are tested based on sensitivity tests by numerical modeling (e.g., Santoro et al., 2017). For critical erosion shear stress ( τ ce ), the 0.1–0.2 N m −2 range has been widely used (e.g., Grasmeijer et al., 2011; Santoro et al., 2017; Xie et al., 2009). In this study, we put τ ce = 0.13 N m −2 from our sensitivity analysis but tested its sensitivity when τ ce = 0.1 N m −2 and τ ce = 0.2 N m −2 .…”

“…The value of M is based on the type of mud, the biology of the bed, and the age of the mud, such as the time it had to consolidate in the bottom and whether or not laminae are present in the consolidated mud (Wolanski, 2019). For M , 1.0 × 10 −5 to 5.0 × 10 −4 kg m −2 s −1 have been considered as typical values (e.g., Winterwerp et al., 2012), while 4.0 × 10 −7 to 5.0 × 10 −6 kg m −2 s −1 has been used for the simulation of cohesive sediment transport (e.g., Grasmeijer et al., 2011; Santoro et al., 2017; Xie et al., 2009). In this study, we assumed as M is 1.0 × 10 −4 kg m −2 s −1 as in Theol (2020), but we ran the simulation when the values of M were 1.0 × 10 −5 and 5.0 × 10 −4 kg m −2 s −1 .…”

“…For critical erosion shear stress (τ ce ), the 0.1-0.2 N m −2 range has been widely used (e.g., Grasmeijer et al, 2011;Santoro et al, 2017;Xie et al, 2009). In this study, we put τ ce = 0.13 N m −2 from our sensitivity analysis but tested its sensitivity when τ ce = 0.1 N m −2 and τ ce = 0.2 N m −2 .…”

“…In this study, we put τ ce = 0.13 N m −2 from our sensitivity analysis but tested its sensitivity when τ ce = 0.1 N m −2 and τ ce = 0.2 N m −2 . For critical deposition shear stress (τ cd ), we set the value as 10 N m −2 as in Santoro et al ( 2017), but we tested its sensitivity when τ cd = 0.15 N m −2 used in Santoro et al (2017) and τ cd = 20 N m −2 used in Grasmeijer et al (2011).…”