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The effect of multicomponent diffusion on the chemical composition of seawater Simantiris, Nikolaos
Abstract
Double-diffusive convection or Double Diffusion is an interaction within a fluid whose density is governed by two constituents of different molecular diffusivities. Double diffusion in the ocean appears to create unique structures that look like staircases in vertical profiles of temperature and salinity. Many oceanographers believe that double diffusion can affect the water masses and the circulation of the ocean. However, in the current literature the detailed physics behind the formation of this staircase are still unclear. In sea salt each ion has different diffusion rate and because of that modelling salt diffusion is actually more complicated since there is no single ”salt diffusivity”. Therefore in order to describe the effects of double diffusion in seawater we have to consider a multicomponent system where each ion is reacting differently than the other ones. To simulate this system we use MIN3P a multicomponent diffusion model. Our approach is primarily numerical, but in order to test the conclusions of our model we compare against observations in Powell Lake. We see that Multicomponent Diffusion can change the chemical composition of seawater and should be considered an important transport mechanism in the ocean.
Item Metadata
Title |
The effect of multicomponent diffusion on the chemical composition of seawater
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Creator | |
Publisher |
University of British Columbia
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Date Issued |
2019
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Description |
Double-diffusive convection or Double Diffusion is an interaction within a fluid
whose density is governed by two constituents of different molecular diffusivities.
Double diffusion in the ocean appears to create unique structures that look like
staircases in vertical profiles of temperature and salinity. Many oceanographers
believe that double diffusion can affect the water masses and the circulation of the
ocean. However, in the current literature the detailed physics behind the formation
of this staircase are still unclear. In sea salt each ion has different diffusion rate and
because of that modelling salt diffusion is actually more complicated since there
is no single ”salt diffusivity”. Therefore in order to describe the effects of double
diffusion in seawater we have to consider a multicomponent system where each ion
is reacting differently than the other ones. To simulate this system we use MIN3P
a multicomponent diffusion model. Our approach is primarily numerical, but in order
to test the conclusions of our model we compare against observations in Powell
Lake. We see that Multicomponent Diffusion can change the chemical composition
of seawater and should be considered an important transport mechanism in the
ocean.
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Genre | |
Type | |
Language |
eng
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Date Available |
2019-10-18
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Provider |
Vancouver : University of British Columbia Library
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Rights |
Attribution-NonCommercial-NoDerivatives 4.0 International
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DOI |
10.14288/1.0384607
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URI | |
Degree | |
Program | |
Affiliation | |
Degree Grantor |
University of British Columbia
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Graduation Date |
2019-11
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Campus | |
Scholarly Level |
Graduate
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Rights URI | |
Aggregated Source Repository |
DSpace
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Rights
Attribution-NonCommercial-NoDerivatives 4.0 International