Turbulent mixing in the ocean can, in some cases, be so intense as to leave surface imprints, or “boils”, that are detectable from space. Examples include turbulent flow over a submerged obstacle and instability of large-amplitude internal waves. In this paper we examine the particular case of tidal flow over a ~60-m-deep sill, which forms a barrier for the flow of dense water from the Pacific ...

Hydraulic jump on adverse stilling basin is an unstable phenomenon which causes some complexities in controlling of the   jump. This paper considers the stability of free hydraulic jump on adverse stilling basins from a theoretical point of view. A minimum value of upstream Froude number is needed to produce the free hydraulic jump on adverse stilling basins which was presented by a theoretical...

The hydraulic jump has been studied as an important method for energy dissipation downstream water structures. Several methods have been used to optimize the hydraulic jump length. One of the common methods was the use of end sill. Steps may be used to control the location of the hydraulic jump downstream of hydraulic structures. Extensive studies have been conducted to investigate the effect o...

/ °° r _ sin kirx JL g(— m) g(x){± & — dx E ~ + *(*, 0, -Zl /2 Sill WX m =0 Z m i — dxE -Z—1/2 Sill TX m =0 where / is any positive integer, where the symbol [ ± s ] * means z or { — z) according as k is odd or even, respectively, and where if |arg [ + z]I <7T, we have l i m ^ i ^ ^ ^ ^ , /) = 0 for every value of /. In the present paper we shall consider the situation when conditions (a) and (...

Citation: Potter KE, Shervais JW, Christiansen EH and Vetter SK (2018) Evidence for Cyclical Fractional Crystallization, Recharge, and Assimilation in Basalts of the Kimama Drill Core, Central Snake River Plain, Idaho: 5.5-Million-Years of Petrogenesis in a Mid-crustal Sill Complex. Front. Earth Sci. 6:10. doi: 10.3389/feart.2018.00010 Evidence for Cyclical Fractional Crystallization, Recharge,...

The primary goal during FY01/02 was to quantitatively assess zooplankton distributions and species in Knight Inlet, with special focus on the sill near Hoeya Head. This area has been the subject of considerable ONR-sponsored oceanographic research in the past focused on the stratified flow features induced by the sill (e.g. Farmer and Armi 1999; Klymak and Gregg 2001). Echo-sounder surveys perf...

www.phil.frb.org Business Review Q1 2004 23 www.phil.frb.org ver the past 20 years, the U.S. economy has had fewer and shorter recessions. In addition, over time, swings in the growth of many macroeconomic variables, such as gross domestic product, have become smaller. Why this decline in economic volatility? In this article, Keith Sill highlights some of the facts about the increased stability...