We discuss here the evolution of vorticity and potential vorticity (PV) for a bottom current crossing a marine channel in shallow-water approximation, focusing on the effect of friction and mixing. The purpose of this research is indeed to investigate the role of friction and vertical entrainment on vorticity and PV spatial evolution in channels or straits when along-channel morphology variatio...

High core recovery at Ocean Drilling Program (ODP) Leg 210, Site 1276, provided a high-resolution porosity-depth relationship and an equally impressive age-depth model based on first and last occurrences of microfossils. Site 1276 was drilled over transitional crust in the Newfoundland nonvolcanic margin, offshore Canada, between known continental crust on the west and apparent oceanic crust on...

Data collected during a 12-day cruise in July 2009 served to examine the structure of the nascent Mediterranean Outflow Water (MOW) immediately west of the Espartel Sill, the westernmost sill in the Strait of Gibraltar. The MOW is characterized by high salinities (>37.0 and reaching 38.3) and high velocities (exceeding 1 m s at 100 m above the seafloor), and follows a submerged valley along a 3...

Sill,?Whilst perusing the article of Captain GreenArmytage on "The use and abuse of Pessaries" in the February number of the Indian Medical Gazette, my attention was drawn to his anatomical description of the Floor of the Pelvis. The pelvic floor of course consists only of a muscular sheet, the levator ani and coccygeus muscles?you have structures above it and structures below it, and some of t...

This study investigated the relationship between language learning aptitude (LLA) and the use of language learning strategies (LLSs) among a cohort of Iranian EFL students at Urmia University, Iran. The adapted versions of the Modern Language Aptitude Test (MLAT; Carrol & Sapon, 1983) and Oxford’s (1990) Strategy Inventory for Language Learning (SILL) were distributed among the participants (i....

The three-dimensional problem of wave trapping above a submerged round sill was first analysed by Longuet-Higgins on the basis of a linear shallow-water theory. The large responses predicted by the theory were, however, not well borne out by the experiments of Barnard, Pritchard & Provis, and this has motivated a more detailed study of the problem. A full linear theory for both inviscid and wea...

Abstract. Water flowing in the river causes a scouring event that occurs at bed channel. The existence of will increase along with changes geometry and obstacles such as weir which are followed by local around weir. Local often downstream end sill weakens its construction. Scouring measurement was conducted to monitor pattern occurs. By using Surfer software, visualization through Data Grid 3D ...

The present research was conducted to investigate the effect of sill geometry and width on discharge coefficient hydraulic jump characteristics. For this purpose, sills with semi-cylindrical, cylindrical, pyramidal, rectangular cube geometries widths 0.075, 0.10, 0.15, 0.2 m were installed under a sluice gate. Results showed that increasing increased gate compared no-sill mode. results placing ...