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INPUT DATA:

Data I

Data II

Data III

Import

Commands

Graphs I

Graphs II

 

ALGORITHMS:

Algorithms I

Algorithms II

Algorithms III

Algorithms IV

Algorithms V

Algorithms VI

 

POLLUTANTS:

Pollutants I

Pollutants II

The sea I

The sea II

Pycnocline

 

 

 

 

 

 

 

     Canarina Spain · Canarina software

Pycnocline

                 

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Pycnocline or thermocline

Density and thermal stratification: The intense heating caused by sunlight results in the formation of a light, warmer layer of water floating on top of a much larger mass of cold, dense water. Where these two bodies of dense water meet there is a zone of rapid change in the water temperature, called the thermocline or picnocline. Such a thermocline is a permanent feature of both tropical and temperature waters. When the surface water of temperature seas is warmed in the summer a further seasonal thermocline can develop much closer to the surface. This is much stronger feature than the permanent thermocline in temperature waters. This thermocline plays an important role in determining seasonal changes in marine primary production in temperature seas. Thermal stratification represents a physical barrier to the mixing of the water column. There is little or no exchange of nutrient through a thermocline.

 

 

The stratification phenomena is the existence of two homogeneous water layers and separated by a thin thermocline layer. In such a case, we can say that the water is stratified. There is no exchange of pollutants through this picnocline layer.

 

 

Example:

Calculation in both XY-plane (parallel to water surface) and XZ-plane (perpendicular to water surface). The fucshia square represents a point source (position of the outfall pipe). The red colour represents high pollutant concentrations. The effluent flow rate is 0,15 m^3/s, the current velocity is  0,04 m/s and the current angle is 45 (NE). The Stratified model has been used in the calculation. The  fucshia square represents the vertical discharge source (outfall locations).  We have a three-dimensional image of the pollutant plume with these two computer screens.

 

 

 

BOD pollution map produced by continuous discharge in this region. The stratified model has been used. Top: the orange horizontal line indicates us the position of the XZ-Plane. Bottom: the orange horizontal line indicates us the position of the XY-Plane and the blue horizontal line indicates us the position of the water surface plane.  The fucshia square represents a point source (position of the outfall pipe). The red colour represents high pollutant concentrations. The violet horizontal line (bottom) indicates us the position of the pycnocline (or thermocline) layer plane. We can see that there is no exchange of pollutants through the pycnocline layer.

 

POLLUTANTS: Pollutants I - Pollutants II - The sea I - The sea II - Pycnocline

 

Canarina Algoritmos Numéricos, S.L.

Environmental software solutions

Software para impacto medio ambiental  

Canary Islands, Spain

e-mail: contact us

 

 

 

European network on pollution · European Union

Member of MAPO: European network on Marine Pollution. Project

funded by the European Commission through the

6th Framework Programme for Research and Development

pycnocline

 

CANARINA: Home - Air pollution · DISPER - Noise pollution · CUSTIC - Water pollution · DESCAR - Contact us

DESCAR: DESCAR: water pollution - Data I - Algorithms I - Pollutants I

SOLUTIONS: DESCAR: water pollution - Advantages - Price

INPUT DATA: Data I - Data II - Data III - Import - Commands - Graphs I - Graphs II

ALGORITHMS: Algorithms I -  Algorithms II - Algorithms III - Algorithms IV - Algorithms V - Algorithms VI

POLLUTANTS: Pollutants I - Pollutants II - The sea I - The sea II - Pycnocline

 

                   

 

DESCAR software solutions: This application has been used in great number of environmental reports, courses and water pollution studies in the last years. We currently have users in more than 10 countries.

Chichester -  outfall design and water pollution report in the coast - outfall modeling and water pollution study in the harbor

City of London - organic matter report - pesticides and polycyclic aromatic hydrocarbons study -

Coventry - suspended solids and biosolids study - dissolved oxygen and turbidity  report -

Derby - best management practices  report - estuaries and contaminated sites study - fluoridation and toxic substances report -

Derry - risk assessment study - nitrification report -

Dundee - biogeochemistry and bacteriological study - pentachlorophenol and dioxins report - vadose zone study -

Durham - microbiological study - solid wastes report - heavy metals report -

Edinburgh - estuaries and turbidity study -

Ely - types of water pollution course - water and air pollution study - water pollution affecting report -

Staffordshire  - environmental issues - water cooler - waterways pollution

Oxfordshire  - water pollution activities - point water pollution - 

Leicester -  solution of water pollution - ways to stop water pollution - how to control water pollution -

Lichfield -  pollution on water - water and land pollution - water and soil pollution - solve water pollution -

Lincoln -  water pollution lesson plans - agricultural water pollution - examples of water pollution -

Lisburn -  ways to reduce water pollution - how to reduce water pollution - impacts of water pollution -

Liverpool - water pollution in the great lakes - water pollution and society - water pollution graph -

Manchester -  underground water pollution - water pollution experiments - diseases caused by water pollution -

Newcastle upon Tyne -  facts on water pollution - picture of water pollution - water pollution photos -

Newport - impact of water pollution - water pollution laws - water pollution information -

Newry -  solutions for water pollution - water pollution problem - water pollution graphs -

Derbyshire  -  the causes of water pollution - affects of water pollution -

Dorset  - water pollution research  - ways to control water pollution - sea water pollution -

Northamptonshire  - water pollution - reducing water pollution - water pollution article

Durham  - water pollution oil - water prevention and control of pollution act 1974 - water pollution control plant -

Nottinghamshire  - outfall - ocean outfall - sewage outfall -

Cheshire  - the effects of water pollution - drinking water pollution -

 

Chalatenango: trichomonas and wastewater study - wastewater treatment and sewage discharges -

Cojutepeque: water and wastewater study - sources of water pollution

Jutiana: wastewater treatment plants - sources of water pollution

La Union: wastewater plant - wastewater management - slaughterhouse wastewater -

San Miguel: sewage water treatment with DBO - port of discharge calculation and sewage pumps - sewage discharge modeling

San Salvador: sewage treatment plant study - standard methods for examination of water and wastewater -

San Vincente: stream discharge with Cl2 study - sewage plant and wastewater minimization report -

Santa Ana: sludge and effluent with Pb report - sludges and wastewaters with Hg study - biotreatment in sewage report - sewage discharge modeling

Sonsonate: suspended solids and biosolids in effluents study - sources of water pollution

Wiltshire  - continental sewage - sewage plumbing - sewage grinder pump -

Aberdeen - sewage problem - london sewage - sewage lard

Armagh - recycled sewage water - treated sewage  - recycling sewage water -

Bangor - effluents with solid wastes and anaerobic report - heavy metals in wastewaters study - sewage discharge modeling

Bath - anaerobic wastewater treatment and biological wastewater study - activated sludge and anaerobic digestion report - sewage discharge modeling

Belfast - wastewater effluent design report - water discharge with heavy metals study - sewage discharge modeling

Birmingham - wastewater engineering treatment and reuse - effluent guidelines - sewage discharge modeling

Bradford - water and wastewater treatment with heavy metals - wastewater engineering - sewage discharge modeling

Brighton & Hove - sewage sludge and partial discharge report - sewage treatment and glow discharge study - sewage discharge modeling

Bristol - trichomoniasis and trichomonas hominis report - standard methods for the examination of sewage discharges - sewage discharge modeling

Shropshire  - sewer design - boston water and sewer - home sewage system - sources of water pollution

Cambridgeshire  - sewage systems - sewage pump - sewage filtration - sewage basin - sewage drinking water - sewage well - sewage wetlands -

Lancashire  - water conservation - drinking water - water treatment plant - industrialised countries - water resources -

Gloucestershire  - sewage removal - sewage treatment plant - sewage pump - sewage system - sewage pumps - sewage systems - sewage disposal -

Staffordshire  - sewage pumping station -

Oxfordshire  - sewage sludge - sewage water - surfers against sewage -

 

Copyright © 2005 Canarina Algoritmos Numéricos, Sociedad Limitada Unipersonal CIF-B38803110 registered for electronic commerce in sheet TF-35526, sheet 1 of the volume 2.671 of the General Section, First Registration, Registro de la Propiedad Número 2 y Marcantil of , Spain. All rights reserved.