Dissertations / Theses on the topic 'Internal waves'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the top 50 dissertations / theses for your research on the topic 'Internal waves.'
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.
Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.
Jamali, Mirmosadegh. "Surface wave interaction with oblique internal waves." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0024/NQ38904.pdf.
Full textLeaman, Nye Abigail. "Scattering of internal gravity waves." Thesis, University of Cambridge, 2011. https://www.repository.cam.ac.uk/handle/1810/238679.
Full textFedorov, Alexey V. "Nonlinear effects in surface and internal waves /." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 1997. http://wwwlib.umi.com/cr/ucsd/fullcit?p9737309.
Full textHurley, David Lee. "Wind waves and internal waves in Base Mine Lake." Thesis, University of British Columbia, 2017. http://hdl.handle.net/2429/62524.
Full textApplied Science, Faculty of
Civil Engineering, Department of
Graduate
Lerczak, James A. "Internal waves on the southern California shelf /." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2000. http://wwwlib.umi.com/cr/ucsd/fullcit?p3035419.
Full textHorne, Iribarne Ernesto. "Transport properties of internal gravity waves." Thesis, Lyon, École normale supérieure, 2015. http://www.theses.fr/2015ENSL1027/document.
Full textInternal waves are produced as a consequence of the dynamic balance between buoyancy and gravity forces when a particle of fluid is vertically displaced in a stably stratified environment. Geophysical systems such as ocean and atmosphere are naturally stratified and therefore suitable for internal waves propagation. Furthermore, these two environments stock a vast amount of particles at their boundaries and in their bulk. Therefore, internal waves and particles will inexorably interact in these systems. In this work, exploratory experiments are performed to study wave generated erosive transport of particles. In order to determine a transport threshold, the peculiar properties of internal waves (“critical reflection”) are employed to increase the intensity of the wave field at the boundaries. A method was developed in collaboration with a signal processing team to improve the determination of the wave components involved in near-critical reflection. This method enabled us to compare our experimental results with a theory of critical reflection, showing good agreement and allowing to extrapolate these results to experiments beyond ours and to oceanic conditions. In addition, we study the interaction of internal waves with a column of particles in sedimentation. Two main effects are observed: the column oscillates around an equilibrium position, and it is displaced as a whole. The direction of the displacement of the column is explained by computing the effect of the Lagrangian drift of the waves. This effect could also explain the frequency dependence of the displacement
Nicolaou, D. "Internal waves around a moving body." Thesis, University of Manchester, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.383254.
Full textPotter, Robert Colin Henry. "Internal waves in the Andaman Sea." Thesis, University of Southampton, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.342768.
Full textDobra, Tom. "Nonlinear interactions of internal gravity waves." Thesis, University of Bristol, 2019. http://hdl.handle.net/1983/4a3f99e2-5e73-4c7c-8d3d-e1141fb23dda.
Full textThomas, Alexandra Elizabeth. "The interaction of an internal solitary wave with surface gravity waves." Thesis, University of Edinburgh, 2002. http://hdl.handle.net/1842/13106.
Full textSun, Haili. "Ray-tracing internal wave/wave interactions and spectral energy transfer /." Thesis, Connect to this title online; UW restricted, 1997. http://hdl.handle.net/1773/10973.
Full textGhaemsaidi, Sasan John. "Interference and resonance of internal gravity waves." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/101532.
Full textCataloged from PDF version of thesis.
Includes bibliographical references (pages 91-96).
Internal waves are propagating disturbances within stratified fluids, arising from a balance of gravity, buoyancy, and rotation. As well as being of fundamental scientific interest, they are ubiquitous in a variety of forms in the Earth's oceans, where they are responsible for driving vertical mixing. And it is the rule, rather than the exception, that internal waves propagate through a varying background density stratification. We begin by theoretically studying internal waves that are harmonically forced at a horizontal level above a semi-infinite, non-uniform density stratification. Starting with a two-layer model, we identify the existence of resonance peaks and diminution troughs in the wave transmission spectra, and provide physical insight through the application of ray theory. Thereafter, we proceed to consider smoothly varying stratifications, demonstrating that these resonance and diminution features persist beyond simple models. We conclude by considering the relevance of the results to geophysical settings. As an example, we demonstrate that an ocean stratification is inherently tuned to transmit internal wave energy to the deep ocean at specific combinations of wavelength and frequency. Subsequently, we perform a laboratory experimental study of an internal wave field generated by harmonic, spatially-periodic surface forcing of a strongly-stratified, thin upper layer sitting atop a weakly-stratified, deep lower layer. In linear regimes, the energy flux associated with relatively high frequency internal waves is prevented from entering the lower layer by virtue of evanescent decay. In the experiments, however, we find that the development of parametric subharmonic instability (PSI) in the upper layer transfers energy from the forced primary wave into a pair of subharmonic daughter waves, each capable of penetrating the weakly-stratified lower layer. We find that around 10% of the primary wave energy penetrates into the lower layer via this nonlinear wave-wave interaction for the regime we study. With an emphasis on assessing the role of interference in tuning wave transmission, we perform a series of laboratory experiments in order to measure resonance and diminution in the aforementioned non-uniform stratification. We find that the occurrence of destructive interference in the upper stratification layer naturally yields diminution of the transmitted wave. Conversely, constructive interference results in a notable amplification of the wave field over time scales on the order of the forcing period; the development of nonlinear wave-wave interactions due to wave amplification is observed over longer time scales. Good agreement is obtained between the experimental results and a weakly viscous, long wave model of our system within the linear regime. Given the ubiquity of layering in environmental stratifications, an interesting example being double-diffusive staircase structures in the Arctic water column, we furthermore present the results of a joint theoretical and laboratory experimental study investigating the impact of multiple layering on internal wave propagation. We first present results for a simplified model that demonstrates the nontrivial impact of multiple layering. Incident waves of particular length and time scales can experience constructive interference taking place within the alternating stratified and mixed layers, which in turn appreciably enhances wave transmission. Thereafter, utilizing a weakly viscous, linear model that can handle arbitrary vertical stratifications, we perform a comparison of theory with experiments finding excellent qualitative and quantitative agreement. We conclude by applying this model to a case study of a staircase stratification profile obtained from the Arctic Ocean, finding a rich landscape of transmission behavior.
by Sasan John Ghaemsaidi.
Ph. D.
Franklin, James. "Laboratory modelling of breaking internal solitary waves." Thesis, University of Dundee, 2014. https://discovery.dundee.ac.uk/en/studentTheses/bf2741dd-7183-4aa5-817e-f5d533269c95.
Full textHakes, Kyle Jeffrey. "Tidally Generated Internal Waves from Asymmetric Topographies." BYU ScholarsArchive, 2020. https://scholarsarchive.byu.edu/etd/8717.
Full textSmith, Sean Paul. "Laboratory Experiments on Colliding Nonresonant Internal Wave Beams." BYU ScholarsArchive, 2012. https://scholarsarchive.byu.edu/etd/3300.
Full textKim, Sungphil. "Internal Tides and Internal Solitary Waves in the Northern South China Sea." NCSU, 2009. http://www.lib.ncsu.edu/theses/available/etd-05152009-141246/.
Full textKalisch, Henrik W. "Models for internal waves in two-fluid systems." Access restricted to users with UT Austin EID Full text (PDF) from UMI/Dissertation Abstracts International, 2001. http://wwwlib.umi.com/cr/utexas/fullcit?p3023554.
Full textAigner, Andreas 1972. "Numerical simulations of internal and inertial solitary waves." Monash University, Dept. of Mathematics and Statistics, 2001. http://arrow.monash.edu.au/hdl/1959.1/8880.
Full textSherwin, T. J. "Internal waves and mixing processes in shelf seas." Thesis, Bangor University, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.308320.
Full textGriffiths, R. M. "The interaction between vorticity and internal gravity waves." Thesis, University of Cambridge, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.599729.
Full textPerry, Jonathan Redvers. "The radar remote sensing of oceanic internal waves." Thesis, Imperial College London, 1988. http://hdl.handle.net/10044/1/47220.
Full textRichardson, Alan Ph D. Massachusetts Institute of Technology. "Seismic imaging using internal multiples and overturned waves." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/98671.
Full textCataloged from PDF version of thesis.
Includes bibliographical references (pages 199-205).
Incorporating overturned waves and multiples in seismic imaging is one of the most plausible means by which imaging results might be improved, particularly in regions of complex subsurface structure such as salt bodies. Existing migration methods, such as Reverse Time Migration, are usually designed to image solely with primaries, and so do not make full use of energy propagating along other wave paths. In this thesis I describe several modifications to existing seismic migration algorithms to enable more effective exploitation of the information contained in these arrivals to improve images of subsurface structure. This is achieved by extending a previously proposed modification of one-way migration so that imaging with overturned waves is possible, in addition to multiples and regular primaries. The benefit of using this extension is displayed with a simple box model and the BP model. In the latter, the proposed method is able to image the underside of a salt overhang when even RTM fails, although substantial artifacts are also present. Progressing to the two-way wave equation, I explain three new ways in which a wavefield may be separated by wave propagation direction, and use these in proposed modifications to the RTM algorithm. With these modifications, overturned waves and multiples can be used more effectively, as they no longer risk subtracting from the image contributions of primaries, their amplitude is boosted to produce greater relative amplitude accuracy, and artifacts usually associated with the use of these arrivals are attenuated. The modifications also provide two means of expressing image uncertainty. Among the results I show are a demonstration of the superior image obtained using the proposed method compared to the source-normalized imaging condition, and an improved image of a salt body in the SEAM model. Finally, I describe another modification to RTM that further reduces artifacts associated with the inclusion of multiples, exhibiting its effectiveness with simple layer models, and on a portion of the SEAM model.
by Alan Richardson.
Ph. D.
Pringle, James M. "Cooling and internal waves on the Continental Shelf." Thesis, Massachusetts Institute of Technology, 1998. http://hdl.handle.net/1721.1/58861.
Full textIncludes bibliographical references.
by James Maxwell Pringle.
Ph.D.
Gómez, Giraldo Evelio Andrés. "Observations of energy transfer mechanisms associated with internal waves /." Connect to this title, 2007. http://theses.library.uwa.edu.au/adt-WU2007.0045.
Full textWinters, Kraig B. "Intensification and instability of internal gravity waves at caustics and critical levels /." Thesis, Connect to this title online; UW restricted, 1989. http://hdl.handle.net/1773/6792.
Full textRaja, Keshav Jayakrishnan. "Internal waves and mean flow in the presence of topography." Thesis, Université Grenoble Alpes (ComUE), 2018. http://www.theses.fr/2018GREAU006/document.
Full textInternal waves play an important role in many processes in oceans. The interaction be-tween internal waves and ocean topography has been an active field of research for long. Yetthere are many questions remaining on the topic. In this thesis, two main processes are ex-amined namely, the reflection of internal wave beams on a slope, and generation of lee wavesover a three-dimensional obstacle, using laboratory experiments and numerical simulations.The nonlinear reflection of an internal wave beam on a uniform slope is studied using two-dimensional inviscid theory and numerical simulations. The resonant triadic interactionsamong the incident, reflected and second harmonic wave beams are investigated developingon existing theory and verifying them with results for numerical simulations.In the case of reflection of three-dimensional internal wave beams, a strong mean horizon-tal flow is found to be induced by the wave beam, which perturbs the wave field and weakensthe second harmonics. The generation of this wave-induced mean flow is examined usingresults from experiments and three-dimensional numerical simulations. Furthermore, theeffects of background rotation on the wave induced mean flow are also studied using numer-ical simulations.The Antarctic Circumpolar Current is considered as one of the main sources of mixing inoceans. Laboratory modelling of the Antarctic Circumpolar Current was done in the Coriolisplatform at LEGI to study the topography induced drag on the current. The experiment andits results are also presented
Helfrich, L. Cody. "Estimating oceanic internal wave energy from seismic reflector slope spectra." Laramie, Wyo. : University of Wyoming, 2008. http://proquest.umi.com/pqdweb?did=1594476671&sid=1&Fmt=2&clientId=18949&RQT=309&VName=PQD.
Full textGomez, Giraldo Evelio Andres. "Observations of energy transfer mechanisms associated with internal waves." University of Western Australia. Centre for Water Research, 2007. http://theses.library.uwa.edu.au/adt-WU2007.0045.
Full textMahta, Adarsh P. "Excitation of internal waves in a three-layer fluid." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape9/PQDD_0015/MQ47068.pdf.
Full textBlumenthal, Martin Benno. "Interpretation of equatorial current meter data as internal waves." Thesis, Massachusetts Institute of Technology, 1987. http://hdl.handle.net/1721.1/51460.
Full textBibliography: v. 2, leaves 376-381.
by Martin Benno Blumenthal.
Ph.D.
MARKOVIĆ, SARA. "Internal waves and turbulent mixing in closed stratified basins." Doctoral thesis, Università degli Studi di Trieste, 2021. http://hdl.handle.net/11368/2996098.
Full textFRATERNALE, FEDERICO. "Internal waves in fluid flows. Possible coexistence with turbulence." Doctoral thesis, Politecnico di Torino, 2017. http://hdl.handle.net/11583/2687873.
Full textKIANI, HARCHEGANI Farkhondeh. "The role of internal waves in ancient carbonate systems." Doctoral thesis, Università degli studi di Ferrara, 2019. http://hdl.handle.net/11392/2478779.
Full textInternal waves are perturbations propagating along the pycnocline, a boundary layer between two different density water masses. Although they are well known by oceanographers, their impact on the sedimentary record still poorly documented. In carbonate settings, internal waves can influence the carbonate production at the depth of pycnocliene by pumping the nutrient-rich waters to the carbonate buildups and create an ideal setting where the metazoan communities can thrive. Recently, the role of internal waves, as a source of water turbulence, has been considered as a useful tool in the interpretation of mesophotic carbonate communities. During the Late Jurassic and Late Oligocene, extensive carbonate reefs have been developed along the Tethys. In this PhD project, two case studies from the Upper Jurassic stromatoporoid-rich facies and Late Oligocene (Chattian) coral-rich facies have been studied in order to study the role of internal waves in development of these carbonate communities. The Upper Jurassic stromatoporoid-rich facies of Monte Sacro Limestones (MSL) crop out along the platform margin of Apulia Carbonate Platform (ACP) in Gargano area. The stromatoporoid buildups in MSL are characterized by high percentage of high-energy debris-rich facies associated with low-energy facies. The origin of these high-energy facies are still matter of debates. The MSL is characterized by three lithofacies LF1- stromatoporoid-rich facies, LF2- stromatoporoid-coral facies, and LF3- stromatoporoid-microbial facies. LF1 is the main lithofacies developed in MSL and characterized by stromatoporoids growth in low-energy mesophotic condition (LF1-S1) associated with high-energy intraclastic-bioclastic rich facies (LF1-S2). The stromatoporoid-rich buildups (LF1) in ACP can be categorized as phototrophic-heterotrophic reefs generated in a pure carbonate environment. The light penetration was confined, resulted in the high development of light-independent micro-encrusters (Tubiphytes morronensis), in a mesophotic condition, where the environment was not ideal for light-dependent microencrusters (Lithocodium- Bacinella) to grow. The origin of high-energy facies developed associated with mesophotic stromatoporoid buildups in MSL can be linked to the effect of internal waves. Firstly, internal waves can provide nutrient-rich water needed by stromatoporoid buildups to grow. Latterly, the buildups can be affected by high-energy turbulence, producing a large amount of high-energy debris rich facies (LF1-S2) in MSL. Moving on to a different age, the Late Oligocene (Chattian) coral-rich facies are well developed in Grotta San Michele Limestone (GSML) Gargano, Italy, as well as Asmari Formation, Zagros, Iran. The corals in GSML are surrounded by a mud-dominated matrix, indicating development in low-energy environments. The corals, are associated with meso-oligophotic components such as non-articulate red algae, rhodolith and Polystrata alba. However, the euphotic components such as articulated red-algae, and rare miliolids are associated with corals. Although these mesophotic corals can be mixed with euphotic components shed down from the shallower depth, the internal waves can be a factor to provide nutrient-rich water for coral colonies to develop in this low-energy settings.
Winkel, David Patrick. "Influences of mean shear in Florida current on turbulent production by internal waves /." Thesis, Connect to this title online; UW restricted, 1998. http://hdl.handle.net/1773/11024.
Full textZhao, Zhongxiang. "A study of nonlinear internal waves in the northeastern South China Sea." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file 11.38Mb, 181 p, 2005. http://wwwlib.umi.com/dissertations/fullcit/3157312.
Full textBoegman, Leon. "The degeneration of internal waves in lakes with sloping topography." University of Western Australia. Centre for Water Research, 2004. http://theses.library.uwa.edu.au/adt-WU2005.0043.
Full textRees, J. M. "Studies of internal gravity waves in the stably stratified troposphere." Thesis, University of Leeds, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.383343.
Full textJohnston, Thomas Michael Shaun. "Internal tide scattering at midocean topography." Thesis, University of Hawaii at Manoa, 2003. http://proquest.umi.com/pqdweb?index=0&did=765959661&SrchMode=2&sid=6&Fmt=2&VInst=PROD&VType=PQD&RQT=309&VName=PQD&TS=1209407173&clientId=23440.
Full textHall, Robert Alan. "Internal waves and slope mixing in the Faroe-Shetland Channel." Thesis, University of Liverpool, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.507197.
Full textSchmidt, Nathan Philip. "Generation, propagation and dissipation of second mode internal solitary waves." Thesis, University of Canterbury. Civil Engineering, 1998. http://hdl.handle.net/10092/7811.
Full textSimonin, David. "Automatic detection and analysis of internal waves on SAR images." Thesis, University of Southampton, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.420213.
Full textWestlake, P. C. "Interfacial and internal waves generated by a submerged prolate spheroid." Thesis, University of Southampton, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.242629.
Full textOikonomou, Emmanouil Konstantiou. "Stationary phase internal waves generated by flow along sloping topography." Thesis, University of Southampton, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.242690.
Full textYuan, Chunxin. "The evolution of oceanic nonlinear internal waves over variable topography." Thesis, University College London (University of London), 2018. http://discovery.ucl.ac.uk/10053741/.
Full textAlias, Azwani B. "Mathematical modelling of nonlinear internal waves in a rotating fluid." Thesis, Loughborough University, 2014. https://dspace.lboro.ac.uk/2134/15861.
Full textKesari, Pradhan Himansu. "Numerical modelling of internal waves the western bay of bengal." Thesis, IIT Delhi, 2016. http://localhost:8080/xmlui/handle/12345678/7003.
Full textJung, Seongyu. "Implementation of internal wave apparatus for copepod behavioral assays." Thesis, Georgia Institute of Technology, 2015. http://hdl.handle.net/1853/54377.
Full textvan, den Bremer T. S. "The induced mean flow of surface, internal and interfacial gravity wave groups." Thesis, University of Oxford, 2014. http://ora.ox.ac.uk/objects/uuid:e735afe7-a77d-455d-a560-e869a9941f69.
Full textDale, Andrew Christopher. "Baroclinic coastal trapped waves above the inertial frequency." Thesis, Bangor University, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.321385.
Full textBastin, Mark E. "Baroclinic waves in containers with sloping end walls." Thesis, University of Oxford, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.670276.
Full text