Abstract: The study analyzes the flow over bottom racks made of longitudinal T-shaped bars. A clear water flow is considered in a laboratory flume. Free surface profiles, wetted rack lengths, and discharge coefficients are measured, changing parameters such as longitudinal slope, void ratio, and approaching flow. The present work complements existing experimental studies, considering the influe...

Objective: To calculate wave response in an offshore or coastal harbor of arbitrary shape, this research develops a two-dimensional linear, inviscid, dispersive, hybrid finite element harbor resonance model using conservation of energy approach. Based on the mild-slope wave equation, the numerical model includes wave refraction, diffraction, and reflection. The model also incorporates the effec...

Laboratory experiments are performed to examine gravity currents propagating into an ambient of uniformly decreasing depth. Predominantly, the study is of a surface gravity current shoaling over a bottom slope as it approaches a corner between the horizontal surface and the sloping topography. For sufficiently high Reynolds number currents, they are found to propagate at a constant speed over t...

Measurements of the slope current at two locations north-west of Ireland have been made between April and December 1994, 40 m above the seabed in a water depth of 660 m. A persistent poleward alongslope current was observed at both locations, with measured means of 10 and 21 cm sÿ1 respectively. A CTD transect across the slope near one mooring indicated the presence of a light, warm, saline cor...

Tidal dynamics affect Antarctic Bottom Water and Ice Shelf Water production in the southern Weddell Sea and the general circulation and mixing. In this region, tidal dynamics were found to be extremely sensitive both to the proximity of the continental shelf-slope break to the critical latitude ? crit and to the existence of a shelf break front. If the continental slope was not in the vicinity ...

A model is discussed which describes the interaction between tidal currents, sediment transport and bedform changes in a one dimensional short embay-ment with a constant width. The water motions are described by the depth{ integrated shallow water equations. They are forced by prescribed free surface elevations at the entrance which consist of a basic tide and a rst overtide. For the sediment d...

Ocean simulations are in part determined by topographic waves with speeds and spatial scales dependent on bottom slope. By their very nature, discrete z-level ocean models have problems accurately representing bottom topography when slopes are less than the grid cell aspect ratio Dz/Dx. In such regions, the dispersion relation for topographic waves is inaccurate. However, bottom topography can ...

Numerical high-resolution numerical simulations of the Gulf of Mexico using the Navy Coastal Ocean Model are used to examine the life cycle of Loop Current system including its shed eddies. In particular, the interaction of the anticyclonic Loop Current Eddies with bottom topography is investigated. These energetic baroclinic anticyclonic eddies have depth scales of several hundred meters and a...

In this work, a thermo-mechanical (TM) numerical approach is presented and applied to investigate the stress-strain evolution of an alpine rock-slope located in Central Italian Alps (Sondrio Province). Along "Cimaganda" slope massive rockslide event occurred around 900 A.D. mobilizing estimated volume 7.5 Mm3 material, reaching bottom valley. Interest historic was raised again recent times, as ...

Abstract The 2011 off the Pacific coast of Tohoku Earthquake occurred southern Sanriku, Japan, on March 11 and generated strong shaking huge tsunami along entire eastern Tohoku. mainshock numerous large aftershocks caused mass-wasting sedimentation events continental shelf, slope, trench bottom. To investigate impacts deep-sea bottom-water environment we conducted shipboard surveys up to ~ 2000...