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|a 10.1021/acs.langmuir.4c01160
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|a eng
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|a Ibne Haque, Ruhul Amin
|e verfasserin
|4 aut
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| 245 |
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|a Three-Dimensional Modeling of Polygonal Ridges in Salt Playas
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|c 2024
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|a Text
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|a ƒaComputermedien
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|a Date Revised 20.08.2024
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a In this work, we investigate the formation of the curious polygonal salt ridges that tessellate salt playas worldwide using suitable three-dimensional modeling and simulation of the dynamical processes that are responsible for their formation. We employ the principles of fracture mechanics under cyclic wetting and drying, fluid and mass transport in fracture channels, and processes of crystallization and self-organization to finally replicate the almost Voronoidal pattern of salt ridge mosaics observed in playas. The model is generic and applicable to playas having different salt compositions, as the effect of the salt diffusion coefficient and critical salinity for crystallization are factored in. The final pattern of polygonal salt ridges obtained by simulation visually resembles the geometry of the salt ridges reported in the literature. A single equation describing the time of first crystallization of salt in terms of evaporation suction pressure P, diffusion coefficient D of salt, and relative salinity Δc with respect to critical salinity at saturation, has been proposed. The saturation of crystal growth rate is shown to be a dynamic equilibrium between advection and diffusion processes. We show that the stable polygonal geometry of the salt playas is an effort toward the total minimization of system energy
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|a Journal Article
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|a Mitra, Atish Jyoti
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|a Dutta, Tapati
|e verfasserin
|4 aut
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
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|g 40(2024), 33 vom: 20. Aug., Seite 17311-17319
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