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The Influence of Momentum Flux at The Inflow Boundary of an Exchange Flow on Multi-Frontogenesis In Narrow Estuaries.

Record Type:	Language materials, manuscript : Monograph/item
Title/Author:	The Influence of Momentum Flux at The Inflow Boundary of an Exchange Flow on Multi-Frontogenesis In Narrow Estuaries./
Author:	Trockel, Dale.
Description:	1 online resource (77 pages)
Notes:	Source: Dissertation Abstracts International, Volume: 79-01(E), Section: B.
Contained By:	Dissertation Abstracts International79-01B(E).
Subject:	Hydrologic sciences. -
Online resource:	click for full text (PQDT)
ISBN:	9780355149272

The Influence of Momentum Flux at The Inflow Boundary of an Exchange Flow on Multi-Frontogenesis In Narrow Estuaries.
Trockel, Dale.

The Influence of Momentum Flux at The Inflow Boundary of an Exchange Flow on Multi-Frontogenesis In Narrow Estuaries. - 1 online resource (77 pages)

Source: Dissertation Abstracts International, Volume: 79-01(E), Section: B.

Thesis (Ph.D.)

Includes bibliographical references

Frontogenesis and the propagation of fronts, a location with a sharp horizontal density gradient, impact water quality as well as many biological processes. Researchers have studied fronts for over three decades; however, other than local maximums in the density gradient, few studies have looked at the mechanisms leading to frontogenesis.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2018

Mode of access: World Wide Web

ISBN: 9780355149272Subjects--Topical Terms:

1179176
Hydrologic sciences.
Index Terms--Genre/Form:

554714
Electronic books.

The Influence of Momentum Flux at The Inflow Boundary of an Exchange Flow on Multi-Frontogenesis In Narrow Estuaries.
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100 1 $a Trockel, Dale. $3 1180654
245 1 4 $a The Influence of Momentum Flux at The Inflow Boundary of an Exchange Flow on Multi-Frontogenesis In Narrow Estuaries.
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300 $a 1 online resource (77 pages)
336 $a text $b txt $2 rdacontent
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500 $a Source: Dissertation Abstracts International, Volume: 79-01(E), Section: B.
500 $a Adviser: John Largier.
502 $a Thesis (Ph.D.) $c University of California, Davis $d 2017.
504 $a Includes bibliographical references
520 $a Frontogenesis and the propagation of fronts, a location with a sharp horizontal density gradient, impact water quality as well as many biological processes. Researchers have studied fronts for over three decades; however, other than local maximums in the density gradient, few studies have looked at the mechanisms leading to frontogenesis.
520 $a The present study investigates the dependence of front dynamics on the momentum flux at the inflow boundary of a narrow estuary. The author identifies three mechanisms leading to frontogenesis: local maximum in the density gradient, convergent zones in the lateral velocity component, and horizontal fluctuations in the vertical velocity component. In this work, the latter two are shown to develop in shear flows due to Kelvin-Helmholtz instabilities. When there is a horizontal density gradient in the surface plume, Kelvin-Helmholtz billows (KHB) lead to secondary frontogenesis if the plume layer is thin relative to the height of the KHB. Flows with multiple fronts are shown to have different flow dynamics than plumes with only a single front. In single front flows the surface layer spreads with an internal Froude number (Fr) around 1.3, similar to previous observations; while flows with multiple fronts travel with a larger Froude number and show an increase in turbulent mixing.
520 $a Furthermore, we outline a numerical method that utilizes embedded boundaries (EB) to deal with the complex geometry of the domain and adaptive mesh refinement (AMR) to correctly resolve shear instabilities. We give particular attention to the boundary conditions of the projection operator. The method is second-order accurate in both time and space.
533 $a Electronic reproduction. $b Ann Arbor, Mich. : $c ProQuest, $d 2018
538 $a Mode of access: World Wide Web
650 4 $a Hydrologic sciences. $3 1179176
650 4 $a Mathematics. $3 527692
650 4 $a Applied mathematics. $3 1069907
655 7 $a Electronic books. $2 local $3 554714
690 $a 0388
690 $a 0405
690 $a 0364
710 2 $a ProQuest Information and Learning Co. $3 1178819
710 2 $a University of California, Davis. $b Applied Mathematics. $3 1180524
773 0 $t Dissertation Abstracts International $g 79-01B(E).
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10262495 $z click for full text (PQDT)