Reconciling Aquaculture's Influence on the Water Column and Benthos of an Estuarine Fjord – a Case Study from Bay d'Espoir, Newfoundland

2005 ◽  
pp. 115-128 ◽  
Author(s):  
Michael F. Tlusty ◽  
Vern A. Pepper ◽  
M. Robin Anderson
Keyword(s):  
Water Column

scholarly journals A BEM for the Hydrodynamic Analysis of Oscillating Water Column Systems in Variable Bathymetry

Energies ◽  
2020 ◽  
Vol 13 (13) ◽  
pp. 3403 ◽  
Author(s):  
Kostas Belibassakis ◽  
Alexandros Magkouris ◽  
Eugen Rusu
Keyword(s):  
Boundary Element Method ◽  
Water Column ◽  
Black Sea ◽  
Bottom Topography ◽  
The Black Sea ◽  
Device Performance ◽  
Oscillating Water Column ◽  
Energy Potential ◽  
Hydrodynamic Analysis

In this work, a novel Boundary Element Method (BEM) is developed and applied to the investigation of the performance of Oscillating Water Column (OWC) systems, taking into account the interaction of the incident wave field with the bottom topography. The modelling includes the effect of additional upwave walls and barriers used to modify the resonance characteristics of the device and improve its performance as the U-OWC configuration. Numerical results illustrating the effects of depth variation in conjunction with other parameters—such as chamber dimensions as well as the parameters associated with the turbine and power take-off system—on the device performance are presented and discussed. Finally, a case study is presented regarding the potential installation of an OWC in a selected port site in the Black Sea, characterized by a good wave energy potential, on the coast of Romania.

scholarly journals Environmental Conditions in a Carpathian Deep Sea Basin During the Period Preceding Oceanic Anoxic Event 2 - A Case Study from the Skole Nappe

2015 ◽  
Vol 65 (5) ◽  
pp. 433-450 ◽  
Author(s):  
Krzysztof Bąk ◽  
Marta Bąk ◽  
Zbigniew Górny ◽  
Anna Wolska
Keyword(s):  
Water Column ◽  
Deep Sea ◽  
Silica Content ◽  
Turbidity Currents ◽  
Ecological Groups ◽  
Deep Basin ◽  
Oceanic Anoxic Event ◽  
Plankton Production ◽  
Basin Floor

Abstract Hemipelagic green clayey shales and thin muddy turbidites accumulated in a deep sea environment below the CCD in the Skole Basin, a part of the Outer Carpathian realm, during the Middle Cenomanian. The hemipelagites contain numerous radiolarians, associated with deep-water agglutinated foraminifera. These sediments accumulated under mesotrophic conditions with limited oxygen concentration. Short-term periodic anoxia also occurred during that time. Muddy turbidity currents caused deposition of siliciclastic and biogenic material, including calcareous foramini-fers and numerous sponge spicules. The preservation and diversity of the spicules suggests that they originate from disarticulation of moderately diversified sponge assemblages, which lived predominantly in the neritic-bathyal zone. Analyses of radiolarian ecological groups and pellets reflect the water column properties during the sedimentation of green shales. At that time, surface and also intermediate waters were oxygenated enough and sufficiently rich in nutri-ents to enable plankton production. Numerous, uncompacted pellets with nearly pristine radiolarian skeletons inside show that pelletization was the main factor of radiolarian flux into the deep basin floor. Partly dissolved skeletons indicate that waters in the Skole Basin were undersaturated in relation to silica content. Oxygen content might have been depleted in the deeper part of the water column causing periodic anoxic conditions which prevent rapid bacterial degra-dation of the pellets during their fall to the sea floor.

scholarly journals Surface Imprints of Water-Column Turbulence: A Case Study of Tidal Flow over an Estuarine Sill

2013 ◽  
Vol 5 (7) ◽  
pp. 3239-3258 ◽  
Author(s):  
George Marmorino ◽  
Geoffrey Smith ◽  
W. Miller
Keyword(s):  
Water Column ◽  
Tidal Flow

Microbial transformation of jellyfish organic matter affects the nitrogen cycle in the marine water column — A Black Sea case study

2016 ◽  
Vol 475 ◽  
pp. 19-30 ◽  
Author(s):  
Tinkara Tinta ◽  
Tjaša Kogovšek ◽  
Valentina Turk ◽  
Tamara A. Shiganova ◽  
Alexander S. Mikaelyan ◽  
...  
Keyword(s):  
Organic Matter ◽  
Water Column ◽  
Black Sea ◽  
Nitrogen Cycle ◽  
Microbial Transformation ◽  
Marine Water

Insights for lake management gained when paleolimnological and water column monitoring studies are combined: A case study from Baptiste Lake

2013 ◽  
Vol 30 (1) ◽  
pp. 11-22 ◽  
Author(s):  
Katrina E. Adams ◽  
Zofia E. Taranu ◽  
Ron Zurawell ◽  
Brian F. Cumming ◽  
Irene Gregory-Eaves
Keyword(s):  
Water Column ◽  
Lake Management

scholarly journals Capture Process of White Pomfret (Pampus argenteus) on Gillnet: A Case Study of Pangandaran Regency, Indonesia

2019 ◽  
pp. 1-6
Author(s):  
Dear Frans Lyandre Simanjorang ◽  
Izza Mahdiana Apriliani ◽  
Herman Hamdani ◽  
Yuniar Mulyani
Keyword(s):  
Water Column ◽  
Secondary Data ◽  
Primary Data ◽  
Capture Process ◽  
Pampus Argenteus ◽  
Weight Proportion ◽  
Research Show

Gillnet is a wall of netting that hangs in the water column, typically made of monofilament or multifilament nylon, had the same size and usually used by fisherman in Pangandaran. This research aims to see the capture process of white pomfret (Pampus argenteus) on gillnet in Pangandaran Regency. This research was conducted in August 2018 and January 2019 in Pangandaran. The data used in this research are primary data consisting of the proportion of catches and capture process, whereas secondary data obtained from Dinas Perikanan Pangandaran. The results of this research show that the quantity and weight proportion of main catch > bycatch and captured process of white pomfret dominated by wedged by 94% and the lowest is gilled by 6%.

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