Relevant bibliographies by topics / Deep water flow

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Deep water flow'

Author: Grafiati
Published: 4 June 2021
Last updated: 11 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Deep water flow.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Deep water flow"

1

Timmermans, M.-L., P. Winsor, and J. A. Whitehead. "Deep-Water Flow over the Lomonosov Ridge in the Arctic Ocean." Journal of Physical Oceanography 35, no. 8 (August 1, 2005): 1489–93. http://dx.doi.org/10.1175/jpo2765.1.

Full text
Abstract:
Abstract The Arctic Ocean likely impacts global climate through its effect on the rate of deep-water formation and the subsequent influence on global thermohaline circulation. Here, the renewal of the deep waters in the isolated Canadian Basin is quanitified. Using hydraulic theory and hydrographic observations, the authors calculate the magnitude of this renewal where circumstances have thus far prevented direct measurements. A volume flow rate of Q = 0.25 ± 0.15 Sv (Sv ≡ 106 m3 s−1) from the Eurasian Basin to the Canadian Basin via a deep gap in the dividing Lomonosov Ridge is estimated. Deep-water renewal time estimates based on this flow are consistent with 14C isolation ages. The flow is sufficiently large that it has a greater impact on the Canadian Basin deep water than either the geothermal heat flux or diffusive fluxes at the deep-water boundaries.
APA, Harvard, Vancouver, ISO, and other styles
2

Bensi, Manuel, Vedrana Kovačević, Leonardo Langone, Stefano Aliani, Laura Ursella, Ilona Goszczko, Thomas Soltwedel, et al. "Deep Flow Variability Offshore South-West Svalbard (Fram Strait)." Water 11, no. 4 (April 2, 2019): 683. http://dx.doi.org/10.3390/w11040683.

Full text
Abstract:
Water mass generation and mixing in the eastern Fram Strait are strongly influenced by the interaction between Atlantic and Arctic waters and by the local atmospheric forcing, which produce dense water that substantially contributes to maintaining the global thermohaline circulation. The West Spitsbergen margin is an ideal area to study such processes. Hence, in order to investigate the deep flow variability on short-term, seasonal, and multiannual timescales, two moorings were deployed at ~1040 m depth on the southwest Spitsbergen continental slope. We present and discuss time series data collected between June 2014 and June 2016. They reveal thermohaline and current fluctuations that were largest from October to April, when the deep layer, typically occupied by Norwegian Sea Deep Water, was perturbed by sporadic intrusions of warmer, saltier, and less dense water. Surprisingly, the observed anomalies occurred quasi-simultaneously at both sites, despite their distance (~170 km). We argue that these anomalies may arise mainly by the effect of topographically trapped waves excited and modulated by atmospheric forcing. Propagation of internal waves causes a change in the vertical distribution of the Atlantic water, which can reach deep layers. During such events, strong currents typically precede thermohaline variations without significant changes in turbidity. However, turbidity increases during April–June in concomitance with enhanced downslope currents. Since prolonged injections of warm water within the deep layer could lead to a progressive reduction of the density of the abyssal water moving toward the Arctic Ocean, understanding the interplay between shelf, slope, and deep waters along the west Spitsbergen margin could be crucial for making projections on future changes in the global thermohaline circulation.
APA, Harvard, Vancouver, ISO, and other styles
3

Dong, Changming, James C. McWilliams, and Alexander F. Shchepetkin. "Island Wakes in Deep Water." Journal of Physical Oceanography 37, no. 4 (April 1, 2007): 962–81. http://dx.doi.org/10.1175/jpo3047.1.

Full text
Abstract:
Abstract Density stratification and planetary rotation distinguish three-dimensional island wakes significantly from a classical fluid dynamical flow around an obstacle. A numerical model is used to study the formation and evolution of flow around an idealized island in deep water (i.e., with vertical island sides and surface-intensified stratification and upstream flow), focusing on wake instability, coherent vortex formation, and mesoscale and submesoscale eddy activity. In a baseline experiment with strong vorticity generation at the island, three types of instability are evident: centrifugal, barotropic, and baroclinic. Sensitivities are shown to three nondimensional parameters: the Reynolds number (Re), Rossby number (Ro), and Burger number (Bu). The dependence on Re is similar to the classical wake in its transition to turbulence, but in contrast the island wake contains coherent eddies no matter how large the Re value. When Re is large enough, the shear layer at the island is so narrow that the vertical component of vorticity is larger than the Coriolis frequency in the near wake, leading to centrifugal instability on the anticyclonic side. As Bu decreases the eddy size shrinks from the island breadth to the baroclinic deformation radius, and the eddy generation process shifts from barotropic to baroclinic instability. For small Ro values, the wake dynamics is symmetric with respect to cyclonic and anticyclonic eddies. At intermediate Ro and Bu values, the anticyclonic eddies are increasingly more robust than cyclonic ones as Ro/Bu increases, but for large Re and Ro values, centrifugal instability weakens the anticyclonic eddies while cyclonic eddies remain coherent.
APA, Harvard, Vancouver, ISO, and other styles
4

Fieux, M., and J. C. Swallow. "Flow of deep water into the Somali Basin." Deep Sea Research Part A. Oceanographic Research Papers 35, no. 2 (February 1988): 303–9. http://dx.doi.org/10.1016/0198-0149(88)90041-6.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

张, 雨晴. "Flume Experiment Research Progress of Deep Water Gravity Flow." Advances in Geosciences 10, no. 11 (2020): 1062–74. http://dx.doi.org/10.12677/ag.2020.1011105.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Liu, Ko-Fei. "Tide-Induced Ground-Water Flow in Deep Confined Aquifer." Journal of Hydraulic Engineering 122, no. 2 (February 1996): 104–10. http://dx.doi.org/10.1061/(asce)0733-9429(1996)122:2(104).

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Siedler, Gerold, Jürgen Holfort, Walter Zenk, Thomas J. Müller, and Tiberiu Csernok. "Deep-Water Flow in the Mariana and Caroline Basins*." Journal of Physical Oceanography 34, no. 3 (March 1, 2004): 566–81. http://dx.doi.org/10.1175/2511.1.

Full text
Abstract:
Abstract Two major water masses dominate the deep layers in the Mariana and Caroline Basins: the Lower Circumpolar Water (LCPW), arriving from the Southern Ocean along the slopes north of the Marshall Islands, and the North Pacific Deep Water (NPDW) reaching the region from the northeastern Pacific Ocean. Hydrographic and moored observations and multibeam echosounding were performed in the East Mariana and the East Caroline Basins to detail watermass distributions and flow paths in the area. The LCPW enters the East Mariana Basin from the east. At about 13°N, however, in the southern part of the basin, a part of this water mass arrives in a southward western boundary flow along the Izu–Ogasawara–Mariana Ridge. Both hydrographic observations and moored current measurements lead to the conclusion that this water not only continues westward to the West Mariana Basin as suggested before, but also provides bottom water to the East Caroline Basin. The critical throughflow regions were identified by multibeam echosounding at the Yap Mariana Junction between the East and West Mariana Basins and at the Caroline Ridge between the East Mariana and East Caroline Basins. The throughflow is steady between the East and West Mariana Basins, whereas more variability is found at the Caroline Ridge. At both locations, throughflow fluctuations are correlated with watermass property variations suggesting layer-thickness changes. The total transport to the two neighboring basins is only about 1 Sverdrup (1Sv ≡ 106 m3 s−1) but has considerable impact on the watermass structure in these basins. Estimates are given for the diapycnal mixing that is required to balance the inflow into the East Caroline Basin. Farther above in the water column, the high-silica tongue of NPDW extends from the east to the far southwestern corner of the East Mariana Basin, with transports being mostly southward across the basin.
APA, Harvard, Vancouver, ISO, and other styles
8

Kouskoulas, David M., and Yaron Toledo. "Deep water gravity wave triad resonances on uniform flow." Physics of Fluids 32, no. 7 (July 1, 2020): 076603. http://dx.doi.org/10.1063/5.0012631.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

McCave, I. N., T. Kiefer, D. J. R. Thornalley, and H. Elderfield. "Deep flow in the Madagascar–Mascarene Basin over the last 150000 years." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 363, no. 1826 (January 15, 2005): 81–99. http://dx.doi.org/10.1098/rsta.2004.1480.

Full text
Abstract:
The SW Indian Ocean contains at least four layers of water masses with different sources: deep Antarctic (Lower Circumpolar Deep Water) flow to the north, midwater North Indian Deep Water flow to the south and Upper Circumpolar Deep Water to the north, meridional convergence of intermediate waters at 500–1500 m, and the shallow South Equatorial Current flowing west. Sedimentation rates in the area are rather low, being less than 1 cm ka −1 on Madagascar Ridge, but up to 4 cm ka −1 at Amirante Passage. Bottom flow through the Madagascar–Mascarene Basin into Amirante Passage varies slightly on glacial–interglacial time–scales, with faster flow in the warm periods of the last interglacial and minima in cold periods. Far more important are the particularly high flow rates, inferred from silt grain size, which occur at warm–to–cold transitions rather than extrema. This suggests the cause is changing density gradient driving a transiently fast flow. Corroboration is found in the glacial–interglacial range of benthic d 18 O which is ca. 2%, suggesting water close to freezing and at least 1.2 more saline and thus more dense glacial bottom waters than present. Significant density steps are inferred in isotope stage 6, the 5e–5d, and 5a–4 transitions. Oxygen isotope data suggest little change by mixing in glacial bottom water on their northward path. Benthic carbon isotope ratios at Amirante Passage differ from glacial Southern Ocean values, due possibly to absence of a local productivity effect present in the Southern Ocean.
APA, Harvard, Vancouver, ISO, and other styles
10

Burckel, Pierre, Claire Waelbroeck, Yiming Luo, Didier M. Roche, Sylvain Pichat, Samuel L. Jaccard, Jeanne Gherardi, Aline Govin, Jörg Lippold, and François Thil. "Changes in the geometry and strength of the Atlantic meridional overturning circulation during the last glacial (20–50 ka)." Climate of the Past 12, no. 11 (November 8, 2016): 2061–75. http://dx.doi.org/10.5194/cp-12-2061-2016.

Full text
Abstract:
Abstract. We reconstruct the geometry and strength of the Atlantic meridional overturning circulation during the Heinrich stadial 2 and three Greenland interstadials of the 20–50 ka period based on the comparison of new and published sedimentary 231Pa / 230Th data with simulated sedimentary 231Pa / 230Th. We show that the deep Atlantic circulation during these interstadials was very different from that of the Holocene. Northern-sourced waters likely circulated above 2500 m depth, with a flow rate lower than that of the present-day North Atlantic deep water (NADW). Southern-sourced deep waters most probably flowed northwards below 4000 m depth into the North Atlantic basin and then southwards as a return flow between 2500 and 4000 m depth. The flow rate of this southern-sourced deep water was likely larger than that of the modern Antarctic bottom water (AABW). Our results further show that during Heinrich stadial 2, the deep Atlantic was probably directly affected by a southern-sourced water mass below 2500 m depth, while a slow, southward-flowing water mass originating from the North Atlantic likely influenced depths between 1500 and 2500 m down to the equator.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Deep water flow"

1

Han, Jiangchen. "An approach for upscaling the flow effects of multiple deep-water genetic units." Thesis, Heriot-Watt University, 2015. http://hdl.handle.net/10399/3121.

Full text
Abstract:
Developing a deep-water basin raises many issues and challenges; one of the most significant and necessary issues is overpressure prediction. Basin modelling to construct full scale models is an effective way to find out overpressure distribution in many conditions. However, with current modelling and other methods, it is difficult to obtain data about highly heterogeneous complex structures, which involve coupling between hydraulics and geo-mechanics (compaction) in a system with spatial complexity and temporal evolution of geological bodies, termed as genetic units (GUs). The data collection is difficult and costly in both economic and time aspects. Understanding the role of the interactions between GUs could play a major role in helping to simplify the highly heterogeneous complex structures. The aim of this thesis is to develop the understanding that can underpin the creation of a workflow to be used to assess the role of interactions between GUs, in relation to predicting overpressure in deep-water sedimentary basins. Tilted sandy aquifers enclosed in muddy sediments (block rotation) are a good reference case which is not uncommon in deep-water basins worldwide. This thesis shows that, by applying basin modelling and response surface methodology, not only is a parameterised prediction possible but also the uncertainty of the parameters can be taken into consideration at the same time. A tilted aquifer, however, rarely exists alone within a ‘featureless’ mud background, but occurs along with other geological architectures of sediment units of the same genetic origins, deposited later. These genetic units may be channels and levees. The GUs could allow the fluid energy to dissipate more easily and therefore can reduce the overpressure at the crest. However, the existence of additional GUs complicates the prediction of the overpressure, as the dimensions of parameter space increases dramatically. This poses a big challenge to extend the prediction, and therefore calls for development of appropriate parameterised overpressure-prediction techniques. This thesis reports the development of parameterised overpressure-prediction techniques in the presence of multiple channels. This result forms the basis for follow-on research that can seek to further generalise the approach to a wider set of systems and their associated descriptive parameters.
APA, Harvard, Vancouver, ISO, and other styles
2

Reynolds, Ben Christopher. "Neodymium and lead isotope time series from Atlantic ferromanganese crusts." Thesis, University of Oxford, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.342540.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Chung, Shin Fun. "Characterisation of soft soils for deep water developments." University of Western Australia. School of Civil and Resource Engineering, 2005. http://theses.library.uwa.edu.au/adt-WU2005.0079.

Full text
Abstract:
[Truncated abstract] This research has studied the penetration and extraction resistance profiles of different types of penetrometers in soft clay. The penetrometers of interest include the cone, T–bar, ball and plate. Effects of the surface roughness and aspect ratio of the T–bar penetrometer on its resistance have also been investigated. Undrained shear strength, Su, profiles derived from the penetration tests are compared with the shear strengths measured from field vane shear tests and laboratory (triaxial and simple shear) tests. Both in situ and centrifuge model penetration tests were undertaken for the research. In addition, ‘undisturbed’? tube samples were retrieved from both the field and the centrifuge strongbox samples (after completion of the centrifuge tests) for laboratory testing. The in situ testing was carried out in Western Australia, at the Burswood site near Perth, with tests including cone, T–bar, ball and plate penetrometer tests, and vane shear tests. Interestingly, the T–bar, ball and plate (‘full-flow’) penetrometers showed a narrow band of resistance profiles both during penetration and extraction, with a range of around 15 % between the highest and lowest profiles and standard deviation of 15 %. However, the cone penetrometer gave similar resistance at shallow depths but increasingly higher penetration resistance at depths greater than 7 m – a phenomenon that is also common in offshore results. During extraction, the cone penetrometer gave a higher resistance profile than the full–flow penetrometers for much of the depth of interest. The Su profile measured directly from the vane shear tests falls within the Su profiles derived from the penetration resistances of the full–flow penetrometers, using a single bearing factor, N = 10.5 (the value originally suggested in the literature for a T–bar penetration test). Again, the cone penetrometer demonstrated diverging results, requiring two separate values for the cone factor, Nkt (10.5 initially increasing to 13 for depths below 10 m) in order to give Su similar to the vane shear tests. This highlights the possible variability of the cone factor with depth. Cyclic penetration and extraction tests were performed at specific depths for each fullflow penetrometer. These tests comprised displacement cycles of ±0.5 m about the relevant depth, recording the penetration and extraction resistances over five full cycles. The results may be used to derive the remoulded strength and sensitivity of the soil. Laboratory tests such as triaxial and simple shear tests were performed on ‘undisturbed’ tube samples retrieved from the same site to evaluate the in situ shear strengths in the laboratory. However, the resulting Su data were rather scattered, much of which may be attributed to variable sample quality due to the presence of frequent shell fragments and occasional silt lenses within the test samples. In general, N factors for the full–low penetrometers, back–calculated using Su values measured from the simple shear tests, fell mainly in a range between 9.7 and 12.8 (between 10.4 and 12.2 for the standard size T–bar (250 mm x 40 mm))
APA, Harvard, Vancouver, ISO, and other styles
4

Haque, Md Mominul. "Comparison of behaviour of 1520 mm (60 in.) concrete pipe with sidd design under deep cover." Ohio University / OhioLINK, 1998. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1176497142.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Voeckler, Hendrik Maximilian. "Modeling deep groundwater flow through fractured bedrock in a mountainous headwater catchment using a coupled surface water - groundwater model, Okanagan Basin, British Columbia." Thesis, University of British Columbia, 2012. http://hdl.handle.net/2429/43539.

Full text
Abstract:
Quantifying recharge to the mountain block from headwater catchments in snowmelt dominated upland mountainous regions is an important aspect of hydrologic studies. This study contributes to understanding of the interaction between surface water, soil water and deep groundwater flow in headwater catchments. A novel approach was developed for estimating the bedrock hydraulic conductivity of a regional-scale fractured bedrock aquifer using discrete fracture network (DFN) modeling. The methodology was tested in the mountainous Okanagan Basin, British Columbia, Canada. Discrete fractures were mapped in outcrops, and larger-scale fracture zones (corresponding to lineaments) were mapped from orthophotos and LANDSAT imagery. Outcrop fracture data were used to generate DFN models for estimating hydraulic conductivity for the fractured matrix (Km). The mountain block hydraulic conductivity (Kmb) was estimated using larger-scale DFN models. Simulated Km and Kmb values range from 10⁻⁸ to 10⁻⁷ m/s, are consistent with estimates from regional modeling studies, and are greatest in a N-S direction, coinciding with the main strike direction of Okanagan Valley Fault Zone. Kmb values also decrease away from the fault, consistent with the decrease in lineament density. Simulated hydraulic conductivity values also compare well with those estimated from pumping tests. The estimates of Kmb were then used to represent the deep bedrock in a coupled surface water - groundwater model using MIKE SHE for the Upper Penticton Creek 241 headwater catchment in the Okanagan Basin. Although highly uncertain due to parameter uncertainty and calibration error, recharge to deep groundwater was ~4% of the annual water budget. An specified outward flux from the catchment boundary, representing ~6% of annual water budget, did not significantly impact streamflow calibration, indicating that such deep groundwater losses from the catchment can be accommodated in a model. This outflow may contribute to cross-catchment flow and, ultimately, to groundwater inflow to lower elevation catchments in the mountain block. The modeling exercise is one of the first in catchment hydrology modeling within steep mountainous terrain in which the lower boundary of the model is not treated as impermeable, and in which recharge to the deep bedrock and discharge to the surrounding mountain block were estimated.
APA, Harvard, Vancouver, ISO, and other styles
6

Ryan, Svenja [Verfasser], Torsten [Akademischer Betreuer] Kanzow, Torsten [Gutachter] Kanzow, and Rhein [Gutachter] Monika. "On the Flow of Modified Warm Deep Water toward the Filchner Ronne Ice Shelf, Weddell Sea, Antarctica / Svenja Ryan ; Gutachter: Torsten Kanzow, Rhein Monika ; Betreuer: Torsten Kanzow." Bremen : Staats- und Universitätsbibliothek Bremen, 2018. http://d-nb.info/1171420447/34.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Krienen, Lisa [Verfasser], Thomas R. [Akademischer Betreuer] Rüde, Benavides Antonio [Akademischer Betreuer] Cardona, and Loera Hector [Akademischer Betreuer] Lopez. "Understanding deep groundwater flow systems to contribute to a sustainable use of the water resource in the Mexican Altiplano / Lisa Krienen ; Thomas R. Rüde, Antonio Cardona Benavides, Hector Lopez Loera." Aachen : Universitätsbibliothek der RWTH Aachen, 2018. http://d-nb.info/1195715005/34.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Colombo, Pedro. "Modelling dense water flows through sills in large scale realistic ocean models : demonstrating the potential of a hybrid geopotential/terrain-following vertical coordinate." Thesis, Université Grenoble Alpes (ComUE), 2018. http://www.theses.fr/2018GREAU017/document.

Full text
Abstract:
Dans le jargon de l’océanographie physique, un «overflow » est une masse d’eau dense, formée sur un plateau continental ou dans une mer marginale, qui rejoint l’océan ouvert en s’écoulant par-delà de fortes contraintes topographiques telles que d’étroits détroits, des seuils ou des talus continentaux particulièrement pentus. Ces processus d'overflow jouent un rôle important en distribuant les flux de chaleur et de sel dans l'océan, car ils alimentent les courants profonds et la plus grande partie des eaux profondes de l'océan global. Une représentation irréaliste de ces processus dans les modèles peut avoir un impact sur leur aptitude à simuler d'autres aspects majeurs de la circulation océanique globale.Représenter de manière réaliste les overflows est encore un défi en modélisation numérique de l’océan. Cette thèse étudie ce problème en utilisant le modèle de la circulation générale océanique NEMO avec une configuration régionale de l’overflow du détroit du Danemark (Denmark Strait Overflow, DSO) avec des résolutions dites eddy-permitting/resolving (permettant la génération de turbulence de mésoéchelle). Dans ce travail je propose d’abord une définition du DSO pour pouvoir caractériser les masses d'eaux qui lui sont associées et pour mettre en évidence et quantifier les principaux défauts de représentation du DSO rencontrés dans une simulation de référence réalisée avec les paramètres standards couramment utilisés dans les configurations globales de NEMO (configurations Drakkar).Grâce à cette définition, j’ai pu quantifier l'impact d'un grand nombre de paramètres du modèle sur la représentation du DSO avec des résolutions allant de l'eddy-permitting (1/12°) à l'eddy-resolving (1/60°). Cette étude, qui a nécessité un grand nombre de simulations de sensibilité, a été faite avec le système de coordonnée verticale classique utilisé dans NEMO, qui est la coordonnée géopotentielle z.Les améliorations les plus importants ont été trouvées en augmentant la résolution verticale et horizontale de façon cohérente. Mes résultats ont cependant montrés que la plupart des paramètres du modèle ont un impact très faible sur la représentation finale du DSO. En particulier, nous avons trouvé qu'augmenter la résolution verticale sans utiliser une résolution horizontale cohérente détériore la solution. La principale raison est que la paramétrisation EVD, représentant la convection libre forcée par une instabilité statique de la colonne d’eau, propage la veine de fluide en direction de la pente de la grille, et non de la pente de la topographie, ce qui induit une trop forte dilution des propriétés de l’overflow. Une très haute résolution horizontale et verticale (1/60° et 300 niveaux) permet de résoudre la couche d'Ekman de fond et de maintenir l'EVD localisé au fond, limitant ainsi la dilution de la veine d’eau dense.J’ai ensuite étudié la représentation du DSO dans un système de coordonnée hybride combinant une coordonnée suivant-le-terrain (s) avec la coordonnée géopotentielle (z). Les améliorations obtenues dans la représentation du DSO sont remarquables et pour une faible augmentation du coût de calcul. Finalement, nous proposons un système de coordonnée verticale mixte s-z qui consiste en une implémentation locale de la coordonnée s à l’intérieur de la grille du modèle en coordonnée z, limité à la région où le DSO se produit. Cette implémentation locale minimise les effets des erreurs du gradient de pression liés à ce type de coordonnée, fait une connexion lisse avec la coordonnée z, et n'introduit pas de coûts de calcul démesurés. L'amélioration de la représentation du DSO est encore très importante.Ce travail souligne l'importance d’adapter le système de coordonnée verticale aux processus physiques les plus pertinents. Un défi de la modélisation serait d'avoir un système de coordonnée verticale qui est localement adapté aux processus océaniques dominants
Overflows play an important role distributing the heat and salt fluxes in the ocean, feeding deep boundary currents and most of the world ocean deep waters. Therefore, an unrealistic representation of overflows in global models may have impacts over many aspects of the simulated state of the ocean.To achieve a realistic representation of overflows is still a challenge for ocean modelling. This work addresses this problem using the community ocean general circulation model NEMO with a regional configuration of the Denmark Strait Overflow (DSO) at eddying resolutions. This work first proposes a definition of the DSO in order to characterize its associated water masses and to find the main caveats in a control simulation that uses the most standard parameters of the commonly used global configurations of NEMO (e.g. Drakkar configurations).Thanks to this definition we then study the impacts on the DSO of a large number of model parameters through a range of eddy-permitting to eddy-resolving resolutions (e.g. 1/12° and 1/60°) in the classic z-coordinate system used in NEMO. Main findings were found increasing the horizontal and vertical resolution, but most model parameters have no significant impacts. In particular it was found that increasing vertical resolution without using a coherent horizontal resolution degrades the solution. The main reason is the EVD parameterisation that propagates the dense vein of fluid along a grid-slope, instead the topographic slope. Coherent and very high resolution both in the horizontal and in the vertical is needed in order to resolve Ekman bottom boundary layer dynamics and keep the EVD localized to the very bottom.We also study the representation of the DSO with a hybrid terrain-following (s) and geopotential (z) coordinate system and obtained considerable improvements for a relatively small increase in computational cost. Finally, we propose a mixed s-z vertical coordinate that relies on a local implementation of s-coordinates within the z-coordinate model, limited to the area where DSO waters are produced. This local implementation is such that it minimizes the effects of pressure gradient errors linked to this type of coordinate, smoothly connects to the global z-coordinate, and does not add any significant computational cost. The improvement of the DSO is found to be drastic.This work emphasizes the utility of adapting the vertical coordinate system to the main physical problem. A modeling challenge would be to have a vertical coordinate system that is locally adapted to the most critical ocean process
APA, Harvard, Vancouver, ISO, and other styles
9

Zhang, Andi. "Numerical investigation of multiphase Darcy-Forchheimer flow and contaminant transport during SO₂ co-injection with CO₂ in deep saline aquifers." Diss., Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/49065.

Full text
Abstract:
Of all the strategies to reduce carbon emissions, carbon dioxide (CO₂) geological sequestration is an immediately available option for removing large amounts of the gas from the atmosphere. However, our understanding of the transition behavior between Forchheimer and Darcy flow through porous media during CO₂ injection is currently very limited. In addition, the kinetic mass transfer of SO₂ and CO₂ from CO₂ stream to the saline and the fully coupling between the changes of porosity and permeability and multiphase flow are two significant dimensions to investigate the brine acidification and the induced porosity and permeability changes due to SO₂ co-injection with CO₂. Therefore, this dissertation develops a multiphase flow, contaminant transport and geochemical model which includes the kinetic mass transfer of SO₂ into deep saline aquifers and obtains the critical Forchheimer number for both water and CO₂ by using the experimental data in the literature. The critical Forchheimer numbers and the multiphase flow model are first applied to analyze the application problem involving the injection of CO₂ into deep saline aquifers. The results show that the Forchheimer effect would result in higher displacement efficiency with a magnitude of more than 50% in the Forchheimer regime than that for Darcy flow, which could increase the storage capacity for the same injection rate and volume of a site. Another merit for the incorporation of Forchheimer effect is that more CO₂ would be accumulated in the lower half of the domain and lower pressure would be imposed on the lower boundary of the cap-rock. However, as a price for the advantages mentioned above, the injection pressure required in Forchheimer flow would be higher than that for Darcy flow. The fluid flow and contaminant transport and geochemical model is then applied to analyze the brine acidification and induced porosity and permeability changes due to SO₂ co-injection. The results show that the co-injection of SO₂ with CO₂ would lead to a substantially acid zone near the injecting well and it is important to include the kinetic dissolution of SO₂ from the CO₂ stream to the water phase into the simulation models, otherwise considerable errors would be introduced for the equilibrium assumption. This study provides a useful tool for future analysis and comprehension of multiphase Darcy-Forchheimer flow and brine acidification of CO₂ injection into deep saline aquifers. Results from this dissertation have practical use for scientists and engineers concerned with the description of flow behavior, and transport and fate of SO₂ during SO₂ co-injection with CO₂ in deep saline aquifers.
APA, Harvard, Vancouver, ISO, and other styles
10

Clesi, Vincent. "Formation de la Terre et de Mars : étude expérimentale et numérique." Thesis, Clermont-Ferrand 2, 2016. http://www.theses.fr/2016CLF22750/document.

Full text
Abstract:
La formation des noyaux planétaires métalliques est un évènement majeur pour l’évolution des propriétés physico-chimiques des planètes telluriques telles que nous les connaissons aujourd’hui. En effet, l’abondance des éléments sidérophiles (i.e. qui ont des affinités chimiques avec les phases métalliques) dans les manteaux planétaires s’explique par les conditions dans lesquelles se sont séparées les phases métalliques et silicatées. Au premier rang de ces conditions se trouvent la pression, la température et la fugacité d’oxygène. La distribution des éléments dans le noyau et le manteau ne peut en effet s’expliquer que pour un équilibre obtenu dans un océan magmatique profond, donc à haute pression et haute température ; et dans des conditions d’oxydo-réduction variables, dont l’évolution la plus probable est de passer d’un état réduit à un état oxydé. Un autre paramètre important est la présence ou non d’eau dans l’océan magmatique primitif. En effet, nous disposons de plus en plus d’arguments permettant d’expliquer l’arrivée des éléments volatils, notamment l’eau, pendant l’accrétion, à partir de briques élémentaires qui contiennent ces éléments. Si l’eau est présente tout au long de l’accrétion, et donc pendant la ségrégation du noyau, elle peut donc avoir un effet sur ce dernier phénomène. Dans cette hypothèse, nous avons mené des expériences de haute pression et haute température permettant de modéliser expérimentalement la formation du noyau en condition hydratée. Ces expériences nous ont permis de montrer que la présence d’eau a un effet sur l’évolution de l’état d’oxydation des manteaux planétaires. Cette évolution oxydo-réductive nous a permis de contraindre des modèles d’accrétion basés sur un mélange de chondrites EH et CI, qui confirment des modèles construits à partir de données isotopiques. Ces modèles nous ont permis de contraindre les concentrations primitives maximum en eau probables sur Terre (1,2-1,8 % pds.) et sur Mars (2,5-3,5 % pds.). D’autre part, nos avons mis en évidence le caractère lithophile (i.e. qui a des affinités chimiques avec les phases silicatées) de l’hydrogène à haute pression, a contrario de plusieurs études précédentes. De ce fait, la différence entre les concentrations initiales élevées en eau que nous obtenons dans nos modèles d’accrétion et les concentrations en eau estimées sur Terre et sur Mars actuellement (2000 ppm et 200 ppm, respectivement) ne peut pas être expliquée par un réservoir d’hydrogène dans le noyau. Enfin, pour améliorer les modèles de formation du noyau, nous avons mis en évidence, par des modèles numériques, l’effet important de la viscosité de l’océan magmatique sur le taux d’équilibre entre noyaux et manteaux des planètes telluriques. Cela nous mène à ré-évaluer les modèles de formation des planètes telluriques basés sur des résultats expérimentaux à l’équilibre, notamment l’extension maximale de l’océan magmatique. L’évolution de la viscosité de l’océan magmatique a donc un impact important sur la composition finale des noyaux planétaires (par exemple les teneurs en soufre, oxygène ou silicium des noyaux terrestres et martiens)
The formation of the metallic planetary cores is a major event regarding to the evolution of physical and chemical properties of the telluric planets as we know it today. Indeed, the siderophile elements (i.e. which has affinities with metallic phases) abundances in planetary mantles is explained by the conditions of core-mantle segregation. Among these conditions, pressure, temperature and oxygen fugacity are the main ones controlling distribution of the elements between mantle and core. This distribution can only be explained by an equilibrium between metal and silicate obtained in a deep magma ocean, which implies high pressure and high temperature of equilibrium. Moreover, the oxygen fugacity must have varied during core-mantle segregation, in a reduced-to-oxidized path most probably. Another important parameter is whether or not water is present in the primordial magma ocean. Indeed, we now have more and more lines of evidences showing that the volatile elements, especially water, arrived during accretion and therefore during the core-mantle segregation, which means that water can have an effect on the latter phenomenon. Considering this hypothesis, we performed several high pressure-high temperature experiments which allowed us to model the formation of the core under hydrous conditions. These experiments demonstrated that water has a significant effect on the redox state evolution of planetary mantles. We use this redox evolution to constrain models of planetary accretions, based on a mix of EH and CI chondrites, showing a good agreement with models based on isotopic data. The output of these models is the maximum initial concentration in water on the Earth (1.2 -1.8 %wt) and on Mars (2.5-3.5 %wt). Furthermore, these experiments showed a lithophile behavior (i.e. which has affinities with silicated phases) of hydrogen at high pressures, contrary to previous studies. Therefore, the difference between high initial concentrations in water yielded by our accretion models and the estimated actual concentrations on the Earth and Mars (2000 ppm and 200 ppm, respectively) cannot be explained by a hydrogen reservoir in the core. Finally, to improve the models of core-mantle segregation, we showed by numerical simulations the important effect of the magma ocean viscosity on the equilibrium between planetary mantles and cores. it lead us to reevaluate the models of accretion based on experimental data, especially the maximum extent of magma oceans. The evolution of the magma ocean viscosity has therefore significant implications on the final composition of planetary cores (for instance on the sulfur, oxygen and silicon content of the Earth’s and Mars’ core)
APA, Harvard, Vancouver, ISO, and other styles
More sources

Books on the topic "Deep water flow"

1

O'Reilly, Andrew M. A method for simulating transient ground-water recharge in deep water-table settings in central Florida by using a simple water-balance/transfer-function model. Reston, Va: U.S. Geological Survey, 2004.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
2

O'Reilly, Andrew M. A method for simulating transient ground-water recharge in deep water-table settings in central Florida by using a simple water-balance/transfer-function model. Reston, Va: U.S. Geological Survey, 2004.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
3

Barker, René A. Regional hydrology and simulation of deep ground-water flow in the southeastern coastal plain aquifer system in Mississippi, Alabama, Georgia, and South Carolina. [Washington, D.C.]: U.S. G.P.O., 1992.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
4

Wirojanagud, Prakob. Numerical modeling of regional ground-water flow in the Deep-Basin Brine aquifer of the Palo Duro Basin, Texas Panhandle. Austin, Tex: Bureau of the Economic Geology, University of Texas at Austin, 1986.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
5

Division, Alberta Fisheries Management. Report on Red Deer River instream flow needs study. Calgary, Alta., Canada: Golder Associates, 1999.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
6

D, Crevello Paul, and Harris Paul M. 1931-, eds. Deep-water carbonates: Buildups, turbidites, debris flows and chalks : a core workshop. Tulsa, OK: SEPM, 1985.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
7

Goater, Lori. Aquatic environment impact ratings a method for evaluating SSRB flow scenarios: Red Deer River case study. 4th ed. [Alberta]: Alberta Environment, 2008.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
8

Wolfe, William J. Recent sedimentation and surface-water flow patterns on the flood plain of the North Fork Forked Deer River, Dyer County, Tennessee. Nashville, Tenn: U.S. Dept. of the Interior, U.S. Geological Survey, 1993.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
9

J, Wolfe William. Recent sedimentation and surface-water flow patterns on the flood plain of the North Fork Forked Deer River, Dyer County, Tennessee. Nashville, Tenn: U.S. Dept. of the Interior, U.S. Geological Survey, 1993.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
10

Wolfe, William J. Recent sedimentation and surface-water flow patterns on the flood plain of the North Fork Forked Deer River, Dyer County, Tennessee. Nashville, Tenn: U.S. Dept. of the Interior, U.S. Geological Survey, 1993.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Book chapters on the topic "Deep water flow"

1

Assem, Haytham, Salem Ghariba, Gabor Makrai, Paul Johnston, Laurence Gill, and Francesco Pilla. "Urban Water Flow and Water Level Prediction Based on Deep Learning." In Machine Learning and Knowledge Discovery in Databases, 317–29. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-71273-4_26.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Toxopeus, Serge L. "Viscous-Flow Calculations for KVLCC2 in Deep and Shallow Water." In Computational Methods in Applied Sciences, 151–69. Dordrecht: Springer Netherlands, 2013. http://dx.doi.org/10.1007/978-94-007-6143-8_9.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Bogdevicius, Marijonas, Jolanta Janutėnienė, Rimantas Didžiokas, and Vytautas Barzdaitis. "Numerical simulation of geothermal water flow in a deep multistage centrifugal pump." In Advances in Mechanism and Machine Science, 3661–70. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-20131-9_361.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Morgan, Lynette. "Hydroponic System - Solution Culture." In Hydroponics and protected cultivation: a practical guide, 61–76. Wallingford: CABI, 2021. http://dx.doi.org/10.1079/9781789244830.0061.

Full text
Abstract:
Abstract This paper discusses about the solution culture or 'hydroculture' systems, which are methods of crop production which do not employ the use of substrates to contain the root system and hold moisture between irrigations. It includes NFT or the nutrient film technique, deep water culture/deep flow technique - float, raft or pond systems, aeroponics, aquaponics, organic solution culture, hydroponic fodder systems, and automation for solution culture systems.
APA, Harvard, Vancouver, ISO, and other styles
5

Morgan, Lynette. "Hydroponic System - Solution Culture." In Hydroponics and protected cultivation: a practical guide, 61–76. Wallingford: CABI, 2021. http://dx.doi.org/10.1079/9781789244830.0005.

Full text
Abstract:
Abstract This paper discusses about the solution culture or 'hydroculture' systems, which are methods of crop production which do not employ the use of substrates to contain the root system and hold moisture between irrigations. It includes NFT or the nutrient film technique, deep water culture/deep flow technique - float, raft or pond systems, aeroponics, aquaponics, organic solution culture, hydroponic fodder systems, and automation for solution culture systems.
APA, Harvard, Vancouver, ISO, and other styles
6

Chen, Jian-yang, Hui Wang, Da-wang Liu, and Tuo Zou. "Evolution Process Characteristics of and Differential Enrichment of Oil and Gas in Deep Water Gravity Flow Sandstone." In Springer Series in Geomechanics and Geoengineering, 3293–308. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-2485-1_305.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Stickley, Catherine E., Lionel Carter, I. Nick Mccave, and Phil P. E. Weaver. "Lower Circumpolar Deep Water Flow Through the SW Pacific Gateway for the Last 190 Ky: Evidence from Antarctic Diatoms." In Geophysical Monograph Series, 101–16. Washington, D. C.: American Geophysical Union, 2013. http://dx.doi.org/10.1029/gm126p0101.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

LOUCKS, R. G., A. A. BROWN, C. W. ACHAUER, and D. A. BUDD. "CARBONATE GRAVITY-FLOW SEDIMENTATION ON LOW-ANGLE SLOPES OFF THE WOLFCAMPIAN NORTHWEST SHELF OF THE DELAWARE BASIN." In Deep-Water Carbonates, 56–92. SEPM (Society for Sedimentary Geology), 1985. http://dx.doi.org/10.2110/cor.85.06.0056.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

ARMENTROUT, JOHN M. "GRAVITY-FLOW DEPOSITS OF A SLOPE VALLEY SYSTEM, HIGH ISLAND A-537 FIELD, GULF OF MEXICO." In Turbidites and Associated Deep-Water Facies, 165–76. SEPM (Society for Sedimentary Geology), 1995. http://dx.doi.org/10.2110/cor.95.20.0165.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Zavala, Carlos, Mariano Arcuri, Mariano Di Meglio, Helena Gamero Diaz, and Carmen Contreras. "A Genetic Facies Tract for the Analysis of Sustained Hyperpycnal Flow Deposits." In Sediment Transfer from Shelf to Deep Water—Revisiting the Delivery System. American Association of Petroleum Geologists, 2012. http://dx.doi.org/10.1306/13271349st613438.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Deep water flow"

1

Kristiansen, P., D. Dangle, E. P. Andren, and N. Cockrell. "Deep Water Sparse OBN Surveys - Processing Flow and QC." In 77th EAGE Conference and Exhibition 2015. Netherlands: EAGE Publications BV, 2015. http://dx.doi.org/10.3997/2214-4609.201413183.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Singh, Sunil Kumar. "Flow Assurance Challenges- FPSO Based Development of MA Deep Water Field." In SPE Oil and Gas India Conference and Exhibition. Society of Petroleum Engineers, 2012. http://dx.doi.org/10.2118/153831-ms.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Deka, Barasha, Rohit Sharma, Vikas Mahto, and Subhash Polara. "Quantum Dots: Low-Dosage Hydrate Inhibitors for Deep Water Flow Assurance." In Offshore Technology Conference. Offshore Technology Conference, 2020. http://dx.doi.org/10.4043/30654-ms.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Monahan, Peter. "Flow Assurance Challenge for Offshore Deep Water in Republic of Congo." In Offshore Technology Conference. Offshore Technology Conference, 2009. http://dx.doi.org/10.4043/20279-ms.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Soetikno, Darmadi, Isti Rodiah, Muhammad Islahuddin, Riska A. P. Kania, Agus Y. Gunawan, Pudjo Sukarno, Asep K. Permadi, and Edy Soewono. "Heat loss model for flow assurance in a deep water riser." In 4TH INTERNATIONAL CONFERENCE ON MATHEMATICS AND NATURAL SCIENCES (ICMNS 2012): Science for Health, Food and Sustainable Energy. AIP Publishing LLC, 2014. http://dx.doi.org/10.1063/1.4868856.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Gong, Zhiwu, Shaoran Ren, Liang Zhang, Guodong Cui, Yanmin Liu, and Yanyong Wang. "Shallow Gas and Shallow Water Flow Induced by Natural Gas Hydrate Dissociation in Deep Water Sediments." In Offshore Technology Conference. Offshore Technology Conference, 2017. http://dx.doi.org/10.4043/27624-ms.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Giraldo, Diego Garcia, and Ronald W. Yeung. "The Deep-Water-Horizon Spill: Flow-Rate Estimation Based on Satellite Images." In ASME 2012 31st International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/omae2012-84153.

Full text
Abstract:
The “Deep Water Horizon” Mobil Offshore Drilling Unit (MODU) is one of several classes of floatable drilling machines. As a consequence of the accident on April 20, 2010, the worst ecological disaster with regard to oil spills in the US history was generated in the Gulf of Mexico, causing extensive damage to marine and wildlife habitats, as well as the Gulf’s fishing and tourism industries. Since that moment, experts are trying to estimate the total amount of oil being lost into the sea. The objective of this presentation is to report a procedure developed in the first author’s thesis1 an independent and logical estimate of the oil flow rate into the Gulf of Mexico produced by the rupture in this rig. There are a number of possible approaches to estimate the flow rate of oil spilling into the Gulf of Mexico. The Plume Modeling Team has developed an approach by observing video image of the oil/gas mixture escaping from the kinks in the riser and the end of the riser pipe. The Mass Balance Team has developed a range of values using USGS (US Geological Survey) and NOAA (National Oceanic and Atmospheric Administration) data analysis collected from NASA’s (National Aeronautics and Space Administration) Airborne Visible InfraRed Imaging Spectrometer (AVIRIS). Finally, a reality-check estimate was based on the amount of oil collected by the Riser Insertion Tube Tool (RITT) plus the estimate of how much oil is escaping from the RITT, and from the kink in the riser. However, there are several limitations in each of these techniques.
APA, Harvard, Vancouver, ISO, and other styles
8

Xiangyang, Niu, Gao Yiyang, Wang Runna, and Du Meng. "Vertical Oil-in-Water Flow Pattern Identification with Deep CNN-LSTM Network." In 2020 International Conference on Intelligent Computing and Human-Computer Interaction (ICHCI). IEEE, 2020. http://dx.doi.org/10.1109/ichci51889.2020.00088.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

He, Zhiguo, Weiming Wu, Yongping Yuan, and Sam S. Y. Wang. "Simulation of Rainfall-Runoff in the Deep Hollow Lake Watershed Using an Integrated Surface-Subsurface Flow Model." In World Environmental and Water Resources Congress 2007. Reston, VA: American Society of Civil Engineers, 2007. http://dx.doi.org/10.1061/40927(243)176.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Hasan, A. Rashid, Rayhana N. Sohel, and Xiaowei Wang. "Estimating Zonal Flow Contributions in Deep Water Assets From Pressure and Temperature Data." In ASME 2017 36th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/omae2017-62537.

Full text
Abstract:
Producing hydrocarbon from deep water assets is extremely challenging and expensive. A good estimate of rates from multiple pay zones is essential for well monitoring, surveillance, and workover decisions. Such information can be gleaned from flowing fluid pressure and temperature; deep-water wells are often well instrumented that offers such data on a continuous basis. In this study a model is presented that estimates zonal flow contributions based on energy and momentum balances. Kinetic and heat energy coming from the reservoir fluid to the production tubing is accounted for in the model. The momentum balance for wellbore takes into account differing flow profile in laminar and turbulent flows. In addition, when sandface temperature data are not available, a recently developed analytical model to estimate the effect of Joule-Thompson expansion on sandface temperature was used to estimate sandface temperature from reservoir temperature. The model developed can be applied to any reservoir with multiple pay zones and is especially useful for deep-water assets where production logging is practically impossible. Available field data for multiphase flow was used to validate the model. Sensitivity analyses were performed that showed accurate temperature data is essential for the model to estimate zonal contribution accurately.
APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Deep water flow"

1

Recent sedimentation and surface-water flow patterns on the flood plain of the North Fork Forked Deer River, Dyer County, Tennessee. US Geological Survey, 1993. http://dx.doi.org/10.3133/wri924082.

Full text
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the extended bibliographies on the topic 'Deep water flow' for particular source types:
Journal articles Dissertations / Theses Books
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography