We have determined the relationship between carbon-specific photosynthesis and phytoplankton cell size in a coastal ecosystem. The normalized size spectra of carbon (C) biomass and photosynthesis allow to determine both biomass and photosynthesis within any size class along the community size spectrum. By dividing the size spectra of photosynthesis and biomass, the size spectrum of C-specific p...

We studied avalanches of cohesionless granular materials down a rough inclined plane and overflowing a wall normal to the incoming flow and to the bottom. This paper focuses on the transient time-varying mean force exerted by the granular stream on the obstacle at various slope inclinations. A nearly triangular dead zone is formed upstream of the obstacle. It largely contributes to the overall ...

[1] An idealized, two‐dimensional numerical modeling study is presented to investigate the effects of variable shelf slope and stratification on surface mixed layer (SML) nutrient supply during upwelling. As reported previously, the physical flow regime is governed by a topographic Burger number. Gradual shelf slope and weak stratification concentrate onshore transport in the bottom boundary la...

[1] The evolution and breaking of internal solitary waves in a shallow upper layer as they approach a constant bottom slope is examined through laboratory experiments. The waves are launched in a two-layer fluid through the standard lock-release method. In most experiments, the wave amplitude is significantly larger than the depth of the shallow upper layer so that they are not well described b...

The effect of continental slope on buoyancy-driven circulation has been studied using a two-layer quasigeostrophic model. In the model, buoyancy flux is incorporated as interfacial mass flux, which consists of narrow intense detrainment in the north and broad entrainment in the south. The model explicitly shows that, in the presence of the continental slope, a small amount of buoyancy flux can ...

Dense oceanic overflows mix with surrounding waters along the descent down the continental slope. The existing parameterizations for entrainment in dense currents account primarily for the shear-induced entrainment at the interface between the dense flow and the ambient fluid. However, the turbulence generated by roughness elements at the bottom boundary, which produces an enhanced drag, can be...

This article presents early results of the FUDOTERAM project using bathymetric LiDAR data acquired with the SHOALS-3000, the latest bathymetric LiDAR system from Optech. The survey area is in the coastal zone along the northern shore of Chaleurs Bay, in the western Gulf of St. Lawrence, Canada. The project aimed to apply the SHOALS3000 to geological mapping, sedimentary process monitoring and m...

The community patterns of Collembola (Hexapoda) were studied at two sites along a microclimatically inversed scree slope in deep karst valley the Western Carpathians, Slovakia, warm and cold periods year, respectively. Significantly lower average temperatures profile noted gorge bottom both periods, meaning that site part scree, near bank creek, was considerably colder wetter compared to warmer...

The study of ground motion effects at river valley sites is an important guide to site selection and seismic design. In this paper, FLAC3D numerical simulation used explore the influencing factors a site. By selecting four with different input spectrum characteristics, intensities, slope angles depth-to-width ratios, orthogonal test forms are designed determine calculation conditions, analysis ...

Abstract The first and second branches of the Tsushima Warm Current flow on continental shelf along break/slope in southwestern Japan Sea, respectively. branch corresponds to offshore side bottom temperature front between cold nearshore warm waters. Across edge, five bottom‐mounted ADCPs with sensors were deployed middle June late July 2014. At varied diurnal tidal cycle. cold‐water intruded in...