Formation of Sand Spit and Bay Barrier

Abstract

The formation of a sand spit and bay barrier was predicted using the BG model, covering three topics: (1) formation of a bay barrier in flat shallow sea and merging of bay mouth sand spits (Section 2), (2) elongation of a sand spit on a seabed with different water depths (Section 3), and (3) deformation of a sandbar formed at the tip of the Futtsu cuspate foreland owing to a tsunami which propagated into Tokyo Bay after the Great East Japan Earthquake on March 11, 2011 (Section 4). The Type 5 BG model was employed in Section 2, and Type 3 BG model in Sections 3 and 4.

Sand Spit Morphology at an Inlet on Phu Quoc Island, Vietnam

“…Hoan et al [20] used the concept of the spit growth model proposed by Kraus [21] to model the elongation of sand spits on Fire Inlet Island (USA) and Bedreveln (Sweden) with the assumption that the spit width is constant. Concerning the application of numerical modeling, Tanaka et al [22] proposed a mathematical model to predict the seasonal migration of a river mouth, whilst Uda et al [23] used the BG model developed based on Bagnold's concept [24] to simulate the elongation of a sand spit under the complex effects of seabed slope, waves, and tidal flow. An idealized case of spit growth was investigated using an experimental method by Petersen et al [25].…”