In this paper, we consider a problem inspired by the real-world need to identify topographical features of ocean basins. Specifically, estimating bottom impermeable boundary an inviscid, incompressible, irrotational fluid from measurements free-surface deviation alone, within context dispersive shallow-water wave models. The regime arises ill-posed nature and is motivated prior work. Assuming o...

Predicting ship resistance in shallow water conditions is very important for the operational considerations of a ship. Shallow waters greatly affect viscous resistance, wave and also propulsion efficiency. This study aims to determine effect depth on ferry. The CFD method was used simulate this phenomenon its effects hull starting from coefficient surge force, sway force yaw (hydrodynamic momen...

abstract the concept of armouring is used to discuss the coarse surface layer in rivers. selective erosion in an alluvial channel reach for which there is no upstream sediment supply can lead to formation of a layer coarser than the under laying material. this phenomenon inhibits sediment transport from the reach.numerical modeling of armouring river bed, provides an approach to simulation of t...

[1] Tsunami earthquakes, shallow events that produce larger tsunamis than expected given their surface wave magnitudes (Ms), typically have long durations and a source spectrum depleted in short period energy. Seven cases of underthrusting tsunami earthquakes provide information on the rupture processes, but little constraint on geographic distribution or frequency. We compare their rupture cha...

Shallow waters influence the behaviour and performance of a vessel by modifying local pressure distribution, wave making, boundary layer thickness. The thickness is also influenced surface roughness. No previous studies have investigated combined effects shallow water contributions roughness on ship resistance. This study aims to fill this knowledge gap in literature using Unsteady Reynolds Ave...

SANCHEZ, A. and WU, W., 2011. A Non-Equilibrium Sediment Transport Model for Coastal Inlets and Navigation Channels. In: Roberts, T.M., Rosati, J.D., and Wang, P., (eds.), Proceedings, Symposium to Honor Dr. Nicholas C. Kraus, Journal of Coastal Research, Special Issue, No. 59, pp. 39-48. West Palm Beach (Florida), ISSN 0749-0208. This paper presents a depth-averaged sediment transport model wi...

Strong, sharp, negative seismic discontinuities, velocity decreases with depth, are observed beneath the Pacific seafloor at ∼60 km depth. It has been suggested that these are caused by an increase in radial anisotropy with depth, which occurs in global surface wave models. Here we test this hypothesis in two ways. We evaluate whether an increase in surface wave radial anisotropy with depth is ...