2 edition of Mechanisms and variability of salt transport in partially-stratified estuaries found in the catalog.
Mechanisms and variability of salt transport in partially-stratified estuaries
Melissa Marie Bowen
|Statement||by Melissa Marie Bowen.|
|Series||MIT/WHOI -- 00-04., MIT/WHOI (Series) -- 2000-04.|
|Contributions||Joint Program in Oceanography/Applied Ocean Science and Engineering., Massachusetts Institute of Technology., Woods Hole Oceanographic Institution.|
|The Physical Object|
|Pagination||172 p. :|
|Number of Pages||172|
The magnitude of salt transport and the processes that contribute to it depend on the bathymetry of the estuary and on the strength of the physical forcing (e.g., tides, freshwater inflows, wind, etc.). In strongly stratified estuaries, salt transport is predominantly due to advection by the net landward flow and the estuarine salt transport . estuaries are wide enough to feel the effect of the rotation of the earth, skewing their circulation (tendency of flow to be concentrated to the right in the Northern Hemisphere). - Sharply stratified estuaries Example: salt-wedge estuaries - Partially stratified estuaries Examples: Chesapeake Bay - Well mixed estuaries Example: Delaware Bay.
Recent research in estuaries challenges the long-standing paradigm of the gravitationally driven estuarine circulation. In estuaries with relatively strong tidal forcing and modest buoyancy forcing, the tidal variation in stratification leads to a tidal straining circulation driven by tidal variation in vertical mixing, with a magnitude that may significantly exceed the gravitational. This deliberately constructed definition clearly highlights the mixing of salt and fresh water as an essential attribute of any estuary. Perillo () goes on to suggest that density structures in an estuary may exist as either highly stratified (salt wedge type), partially stratified or well mixed. Classification of estuaries .
Analytic solutions for along-channel velocity through an estuarine cross-section with laterally varying depth are compared to observations from an array of current meters deployed over a nearly triangular cross-section of the James River estuary. Analytic results suggest that the transverse structure of along-channel velocity at this cross-section is primarily due to simple density-driven. waters, other mechanisms of physical variability can overwhelm the annual cycle of thermal stratification. For example, in estuaries and shallow shelf waters (regions of freshwater influence, Simpson et ml., ), salinity stratification can be a stronger stabilizing force than thermal stratification.
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Salt transport is generally divided into a seaward advection of salt due to the net outflow and two mechanisms of landward salt transport, the estuarine salt transport (i.e., the vertical and lateral variations of tidally averaged, or “residual,” velocity and salinity) and tidal dispersion (i.e., the tidal correlations of velocity and Cited by: Mechanisms and variability of salt transport in partially-stratified estuaries Article (PDF Available) September with 42 Reads How we measure 'reads'.
Mechanisms and variability of salt transport in partially-stratified estuaries. View/ Open. (Mb) The variability of salt transport determines the variation of the length of the salinity intrusion and the large-scale density gradient in an estuary.
Melissa M., "Mechanisms and variability of salt transport in. In this paper, its mechanisms in a partially stratified estuary are investigated with a numerical model of the Hudson estuary.
During neap tides, when the estuary is strongly stratified, the tidal oscillatory salt transport is mainly due to the hydraulic response of the halocline to the longitudinal variation of by: 4. Mechanisms and variability of salt transport in partially-stratified estuaries.
Author(s) Bowen, Melissa Marie. The variability of salt transport determines the variation of the length of the salinity intrusion and the large-scale density gradient in an estuary. This thesis contains three studies that address salt transport and the salt Cited by: Mechanisms and Variability of Salt Transport in Partially-Stratified.
By Partially-stratified Estuaries and Melissa Marie BowenWoods Hole, Oceanographic Institution and Melissa Marie BowenRockwell Geyer, S Steven, J. Lentz, Brechner Owens and Melissa Marie Bowen. Abstract. Mechanisms of Tidal Oscillatory Salt Transport in a Partially Stratified Estuary Article (PDF Available) in Journal of Physical Oceanography 45(11) September with Reads.
The variation of salt transport with the depth, the along-channel salinity gradient, and the amplitude of the tidal velocity is investigated with analytic and numerical models. The results indicate that salt transport increases dramatically during stratified periods when vertical mixing is weak.
study, however, could address the spring-neap variability of salt transport or assess the contributions of each mechanism to the longer-term salt balances.  Spring-neap variations of salt transport should be most evident in partially-stratified estuaries, such as the Hudson Estuary, where stratification alternates between section where.
Journal of Fluid Mechanics 5, Fischer, H. Analytic prediction of longitudinal dispersion coefficients in natural streams. Proceedings of the 12th Congress of the International Association of Hydraulics Research. Fischer, H. Mass transport mechanisms in partially stratified estuaries.
Journal of Fluid Mech- an Mechanisms and variability of salt transport in partially-stratified estuaries. The variability of salt transport determines the variation of the length of the salinity intrusion and the large-scale density gradient in an estuary.
This thesis contains three studies that address salt transport and the salt balance. Oscillatory salt. Seasonal Variation in Residence Times of Two Neighboring Bays with Contrasting Topography. Estuaries and Coasts, Email your librarian or administrator to recommend adding this book to your organisation's collection.
Fischer, H. () Mass transport mechanisms in partially stratified estuaries. Fluid Mech. 53, – Sylaios et al. () also identified advection as the main mechanism for salt transport, which was consistently landward.
Recently, Gong and Shen () investigated the variability of salt fluxes at the Modaomen Estuary by numerical simulation. The mixing process in estuaries acts mainly in the longitudinal direction.
in the mechanisms of salt transport should be most evident in partially-stratified estuaries. During neap tides, the estuarine salt transport increases, and the salt intrusion moves further into the river. During spring tides, the estuarine salt transport is reduced, and the salt intrusion is moved seaward by the freshwater flow .
This research focusses on mechanisms that result in exchange flows and transport of salt. The model study has led to new insights into the way in which tides and baroclinic pressure gradients contribute to the straining circulation, i.e. the exchange flow that is induced by the interaction of temporal variations of turbulence and velocity.
Rockwell Geyer's research works with 5, citations reads, including: Acoustic Observations of Bubble Plumes at a Tidal Intrusion Front in the James River Estuary. Dissertation: “Mechanisms and variability of salt transport in partially-stratified estuaries.” Jonathon Woodruff, WHOI/MIT Joint Program student, Subtidal to monthly timescales of variability for telemetered moorings in Puget Sound.
CrossRef; H. () Mass transport mechanisms in partially stratified estuaries. Fluid Mech. 53, – J. et al. () Mechanisms driving the time-dependent salt flux in partially stratified estuary. Phys. Oceanogr.
36 ( This mechanism has little effect on the cross-sectionally integrated tidal oscillatory salt transport, but it results in an apparent left-right cross-channel asymmetry of tidal oscillatory salt. Mass transport mechanisms in partially stratified estuaries.
() divided the salt transport into a seaward-directed component due to the river outflow and two landward components Lateral variability of sediment transport in the Delaware Estuary.
Geophys. Mechanisms and Variabilty of Salt Transport in Partially-Stratified Estuaries by Melissa Marie Bowen Submitted to the Woods Hole Oceanographic Institution / Massachusetts Institute of Technology Joint Program in Physical Oceanography in September, in partial fulfillment of the requirements for the degree of Doctor of Philosophy.
ABSTRACT.variation of the salt transport mechanisms in the PRE dur- physical properties of estuaries over the last decade. This book introduces a classification for estuaries before presenting the.The relative weights of horizontal salt transport mechanisms, both the tidal and density-driven dispersion types, in estuaries can be expressed using Van der Burgh's coefficient, K (Savenije,