We have detected faint Hα emission from several points along the Magellanic Stream, using the Rutgers Fabry–Perot Interferometer at the CTIO 1.5-m telescope. The sources of the emission are diffuse; at each observed position, there is no variation in intensity over the 7 field of the Fabry–Perot. At points on the leading edges of the H I clouds MS II, MS III, and MS IV, we detect Hα emission of...

A novel approach for studying the spatial relationship between the production and dissipation rates of turbulent kinetic energy and vortical structures is presented. Two turbulent flows were investigated: the zero pressure gradient boundary layer and the two-stream mixing layer. In both flows, a multisensor hot-wire probe was used to measure the velocity components in all three coordinate direc...

Influence of springtime surface condition over Siberia upon subsequent summertime blocking activity over northeastern Siberia, and the Okhotsk sea is examined. It is found that when the surface temperature over Siberia is high in April (the high years), blocking events over northeastern Siberia, and the Okhotsk sea in May and June, occur more frequently than climatology. In the high years, a je...

Changes in riparian vegetation or water turbidity and browning in streams alter the local light regime with potential implications for stream biofilms and ecosystem functioning. We experimented with biofilms in microcosms grown under a gradient of light intensities (range: 5-152 μmole photons s(-1)  m(-2) ) and combined 454-pyrosequencing and enzymatic activity assays to evaluate the effects of...

We investigated the influence of oxygen demand (developmental stage) and supply (hypoxia, water flow rate, the chorion and body movements) on the oxygen concentration within the boundary layer next to the chorion of embryos or skin of larvae of rainbow trout (Oncorhynchus mykiss). Oxygen microelectrodes were used to measure dissolved oxygen (DO) within the boundary layer of trout embryos and la...

With the aim of assessing basic alluvial channel planforms as a function of the main determining parameters, a number of stability diagrams have been published during the past several decades, starting with the well-known plots of channel slope versus bankfull discharge of Leopold and Wolman (1957) and Lane (1957). In more recent versions of these stability diagrams, a parameter representing fl...

Our purpose is to detect ocean surface features, specifically oceanic thermal fronts, through analysis of SAR (synthetic aperture radar)-derived wind stress fields. Fine-resolution measurements of near-surface wind speeds over the Gulf Stream region of the Northwest Atlantic were made using SAR images collected by RADARSAT-2. Linear statistical relationships between the wind stress curl and div...

A mathematical model is explored to establish the electroosmotic flow for Cu-wa-ter nanoliquids within a ciliated symmetric micro-channel, established with aid of ciliary motion and axial pressure gradient. Nanofluid comprise Cu as nanofluid particles water base fluid. Maxwell-Garnelt exploited viscosity thermal conductivity nanoliquid. Magnetic field applied in transverse direction external el...