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Abstract Several solar system moons harbor subsurface water oceans; extreme internal heating or solar irradiation can form magma oceans in terrestrial bodies. Tidal forces drive ocean currents, producing tidal heating that affects the thermal−orbital evolution of these worlds. If the outermost layers (ocean and overlying shell) are thin, tidal dynamics can be described using thin-shell theory. Previous work assumed that the ocean and shell's thickness and density are uniform. We present a formulation of thin-shell dynamics that relaxes these assumptions and apply it to several cases of interest. The tidal response of unstratified oceans of constant thickness is given by surface gravity and Rossby waves, which can resonate with the tidal force. The oceans of the outer solar system are too thick for gravity wave resonances, but high-amplitude Rossby waves can be excited in moons with high orbital obliquity. We find that meridional ocean thickness variations hinder the excitation of Rossby waves, decreasing tidal dissipation and increasing the inclination damping timescale, which allows us to reconcile the present inclination of the Moon with the existence of a past long-lived magma ocean and to explain the inclination of Titan and Callisto without invoking a recent excitation. Stratified oceans can support internal gravity waves. We show that dissipation due to internal waves can exceed that resulting from surface gravity waves. For Enceladus, it can be close to the moon’s thermal output, even if the ocean is weakly stratified. Shear due to internal waves can result in Kelvin–Helmholtz instabilities and induce ocean mixing.
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Adhikary, Subhrangshu, and Saikat Banerjee. "Improved Large-Scale Ocean Wave Dynamics Remote Monitoring Based on Big Data Analytics and Reanalyzed Remote Sensing." Nature Environment and Pollution Technology 22, no. 1 (March 2, 2023): 269–76. http://dx.doi.org/10.46488/nept.2023.v22i01.026.
Oceans and large water bodies have the potential to generate a large amount of green and renewable energy by harvesting the ocean surface properties like wind waves and tidal waves using Wave Energy Converter (WEC) devices. Although the oceans have this potential, very little ocean energy is harvested because of improper planning and implementation challenges. Besides this, monitoring ocean waves is of immense importance as several ocean-related calamities could be prevented. Also, the ocean serves as the maritime transportation route. Therefore, a need exists for remote and continuous monitoring of ocean waves and preparing strategies for different situations. Remote sensing technology could be utilized for a large scale low-cost opportunity for monitoring entire ocean bodies and extracting several important ocean surface features like wave height, wave time period, and drift velocities that can be used to estimate the ideal locations for power generation and find locations for turbulent waters so that maritime transportation hazards could be prevented. To process this large volume of data, Big Data Analytics techniques have been used to distribute the workload to worker nodes, facilitating a fast calculation of the reanalyzed remote sensing data. The experiment was conducted on Indian Coastline. The findings from the experiment show that a total of 1.86 GWh energy can be harvested from the ocean waves of the Indian Coastline, and locations of turbulent waters can be predicted in real-time to optimize maritime transportation routes.
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Lee, Jaw-Fang, and Ray-Yeng Yang. "Waves and Ocean Structures." Journal of Marine Science and Engineering 9, no. 3 (March 9, 2021): 305. http://dx.doi.org/10.3390/jmse9030305.
Whittaker, T. J. T. "Waves in ocean engineering." Engineering Structures 14, no. 5 (November 1992): 347. http://dx.doi.org/10.1016/0141-0296(92)90048-u.
D'Asaro, E. A., P. G. Black, L. R. Centurioni, Y. T. Chang, S. S. Chen, R. C. Foster, H. C. Graber, et al. "Impact of Typhoons on the Ocean in the Pacific." Bulletin of the American Meteorological Society 95, no. 9 (September 1, 2014): 1405–18. http://dx.doi.org/10.1175/bams-d-12-00104.1.
Tropical cyclones (TCs) change the ocean by mixing deeper water into the surface layers, by the direct air–sea exchange of moisture and heat from the sea surface, and by inducing currents, surface waves, and waves internal to the ocean. In turn, the changed ocean influences the intensity of the TC, primarily through the action of surface waves and of cooler surface temperatures that modify the air–sea fluxes. The Impact of Typhoons on the Ocean in the Pacific (ITOP) program made detailed measurements of three different TCs (i.e., typhoons) and their interaction with the ocean in the western Pacific. ITOP coordinated meteorological and oceanic observations from aircraft and satellites with deployments of autonomous oceanographic instruments from the aircraft and from ships. These platforms and instruments measured typhoon intensity and structure, the underlying ocean structure, and the long-term recovery of the ocean from the storms' effects with a particular emphasis on the cooling of the ocean beneath the storm and the resulting cold wake. Initial results show how different TCs create very different wakes, whose strength and properties depend most heavily on the nondimensional storm speed. The degree to which air–sea fluxes in the TC core were reduced by ocean cooling varied greatly. A warm layer formed over and capped the cold wakes within a few days, but a residual cold subsurface layer persisted for 10–30 days.
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Jiang, Zhu-Hui, Si-Xun Huang, Xiao-Bao You, and Yi-Guo Xiao. "Ocean internal waves interpreted as oscillation travelling waves in consideration of ocean dissipation." Chinese Physics B 23, no. 5 (May 2014): 050302. http://dx.doi.org/10.1088/1674-1056/23/5/050302.
Includes bibliography. Ocean waves represent an important design factor in many coastal engineering applications. Although extreme wave height is usually considered the single most important of these factors there are other important aspects that require consideration. These include the probability distribution of wave heights, the seasonal variation and the persistence, or duration, of calm and storm periods. If one is primarily interested in extreme wave height then it is possible to restrict one's attention to events which are sufficiently separated in time to be effectively independently (and possibly even identically) distributed. However the independence assumption is not tenable for the description of many other aspects of wave height behaviour, such as the persistence of calm periods. For this one has to take account of the serial correlation structure of observed wave heights, the seasonal behaviour of the important statistics, such as mean and standard deviation, and in fact the entire seasonal probability distribution of wave heights. In other words the observations have to be regarded as a time series.
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Suoja, Nicole Marie. "Development of a directional wave gage for short sea waves." Thesis, Massachusetts Institute of Technology, 1996. http://hdl.handle.net/1721.1/38163.
Melo, Jose Luis Branco Seabra de. "Nonlinear parametric wave model compared with field data." Monterey, Calif. : Naval Postgraduate School, 1985. http://catalog.hathitrust.org/api/volumes/oclc/57738811.html.
Walker, Daniel Anthony Guy. "Interaction of extreme ocean waves with offshore structures." Thesis, University of Oxford, 2006. http://ora.ox.ac.uk/objects/uuid:6858dc08-1bd4-4195-8893-1af98d5e68e3.
With most of the world's untouched oil and gas resources offshore and the possibility that hurricanes are becoming more frequent and more intense, the risks associated with offshore oil and gas production are increasing. Therefore, there is an urgent need to improve current understanding of extreme ocean waves and their interaction with structures. This thesis is concerned with the modelling of extreme ocean waves and their diffraction by offshore structures, with the ultimate aim of proposing improved tools for guiding airgap design. The feasibility of using linear and second order diffraction solutions with a suitable incident wave field to predict extreme green water levels beneath multi-column structures is investigated. Such tools, when fully validated, could replace the need to carry out model tests during preliminary design. When contemplating airgap design it is crucially important that consideration is given to the largest waves in a sea state, the so-called freak or rogue waves. This thesis studies the nature of one specific freak wave for which field data is available, namely the Draupner New Year wave. Unique features of this wave are identified, distinguishing it from a typical large wave, and an estimate of the probability of occurrence of the wave is given. Furthermore, a design wave, called NewWave, is proposed as a good model for large ocean waves and is validated against field and experimental data. The diffraction of regular waves and NewWaves by a number of structural configurations is studied. In order to assess the validity of using diffraction solutions for the purposes of airgap design, comparisons are made with measured wave data from a programme of wave tank experiments. Wave data for a real platform configuration are examined to highlight the key issues complicating the validation of diffraction based design tools for real structures. The ability of diffraction theory to reproduce real wave measurements is discussed. The phenomenon of near-trapping is also investigated, allowing guidelines for airgap design to be established.
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Van, der Westhuysen A. J. "The application of the numerical wind wave model SWAN to a selected field case on the South African coast." Thesis, Link to the online version, 2002. http://hdl.handle.net/10019.1/3632.
Xue, Ming 1967. "Three-dimensional fully-nonlinear simulations of waves and wave body interactions." Thesis, Massachusetts Institute of Technology, 1997. http://hdl.handle.net/1721.1/10216.
Proehl, Jeffrey A. "Equatorial wave-mean flow interaction : the long Rossby waves /." Thesis, Connect to this title online; UW restricted, 1988. http://hdl.handle.net/1773/10960.
Murphy, Darryl Guy. "Rossby waves in the Southern Ocean." Thesis, University of Exeter, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.303178.
Kukulka, Tobias. "The effect of breaking waves on a coupled model of wind and ocean surface waves." View online ; access limited to URI, 2006. http://0-digitalcommons.uri.edu.helin.uri.edu/dissertations/AAI3248233.
Scott, Nicholas Vicente. "Observations of the wind-wave spectrum and steep wave statistics in open ocean waters." View online ; access limited to URI, 2003. http://0-wwwlib.umi.com.helin.uri.edu/dissertations/dlnow/3103724.
Pelinovsky, Efim, and Christian Kharif, eds. Extreme Ocean Waves. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-21575-4.
Watanabe, Yasunori. "Ocean Waves." In Dynamics of Water Surface Flows and Waves, 189–222. Boca Raton: CRC Press, 2022. http://dx.doi.org/10.1201/9781003140160-7.
Olbers, Dirk, Jürgen Willebrand, and Carsten Eden. "Forced Waves." In Ocean Dynamics, 307–31. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-23450-7_10.
Olbers, Dirk, Jürgen Willebrand, and Carsten Eden. "Sound Waves." In Ocean Dynamics, 161–77. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-23450-7_6.
Olbers, Dirk, Jürgen Willebrand, and Carsten Eden. "Gravity Waves." In Ocean Dynamics, 179–210. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-23450-7_7.
Olbers, Dirk, Jürgen Willebrand, and Carsten Eden. "Long Waves." In Ocean Dynamics, 211–86. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-23450-7_8.
Kistovich, Anatoly, Konstantin Pokazeev, and Tatiana Chaplina. "Plane Sound Waves." In Ocean Acoustics, 43–57. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-35884-6_4.
Alpers, Werner. "Ocean Internal Waves." In Encyclopedia of Remote Sensing, 433–37. New York, NY: Springer New York, 2014. http://dx.doi.org/10.1007/978-0-387-36699-9_118.
Robinson, Ian S. "Ocean surface waves." In Discovering the Ocean from Space, 293–332. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-540-68322-3_8.
Schober, Constance M., and Annalisa Calini. "Rogue Waves in Higher Order Nonlinear Schrödinger Models." In Extreme Ocean Waves, 1–21. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-21575-4_1.
Duro, Lígia, Pedro Cruz, and Penousal Machado. "Abstract ocean waves." In ACM SIGGRAPH 2011 Posters. New York, New York, USA: ACM Press, 2011. http://dx.doi.org/10.1145/2037715.2037728.
Fu, Thomas C., Anne M. Fullerton, Erin E. Hackett, and Craig Merrill. "Shipboard Measurement of Ocean Waves." In ASME 2011 30th International Conference on Ocean, Offshore and Arctic Engineering. ASMEDC, 2011. http://dx.doi.org/10.1115/omae2011-49894.
Over the past several years a number of techniques have been utilized for the measurement of ocean waves from shipboard platforms. These systems have ranged from commercial off the shelf (COTS) navigation radar and Light Detection and Ranging (LIDAR) systems to specially developed in-house instrumentation systems. Most of these systems have been utilized to measure the directional wave spectra around the ship. More recently, the Naval Surface Warfare Center, Carderock Division (NSWCCD) and others have begun to utilize these techniques for shipboard measurement of individual ship generated waves as well as open ocean waves. NSWCCD has used a number of these methods on various Office of Naval Research (ONR) and Naval Sea Systems (NAVSEA) sponsored field tests. These field tests were performed on a variety of naval platforms over a range of sizes, including some fixed platforms, for various sea states. While each of these tests has had individual measurement goals and objectives, the series of tests has also provided an environment for testing and developing new instrumentation and exploring their capabilities. As a result of these efforts, instrumentation has grown in sophistication from qualitative video-based observations of the wave field around an underway vessel to laser and radar based imaging and ranging measurements of free surface dynamics. This work has led to higher fidelity data, as well as data that were previously unobtainable. In this paper we provide an overview of these systems and techniques and summarize the basic capabilities of each method by providing measurement examples/applications. These systems include a shipboard array of ultrasonic distance sensors for measuring directional wave spectra, a COTS wave radar system, and a COTS scanning LIDAR system. While not intending to be exhaustive, this paper seeks to highlight the insights gained from the recent applications of these techniques, as well as the difficulties and issues associated with shipboard measurements such as ship motion and logistical constraints.
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Story, W. Rob, Thomas C. Fu, and Erin E. Hackett. "Radar Measurement of Ocean Waves." In ASME 2011 30th International Conference on Ocean, Offshore and Arctic Engineering. ASMEDC, 2011. http://dx.doi.org/10.1115/omae2011-49895.
Over the past two decades a number of advances have been made in the use of radar systems for the measurement of ocean waves, building on early work at universities and the Naval Research Lab (NRL) to investigate the potential for extracting wave field measurements from the sea clutter seen in shipboard radar images. This early work was the foundation for modern wave radar systems, with hardware systems ranging from commercial off the shelf (COTS) incoherent navigation radar to specially developed, calibrated, coherent instrumentation radar and phased-array systems. Software algorithms and image analysis techniques have also been in constant development, which have evolved from 2D analysis of digitized images into modern techniques performing real-time 3D transformation of high resolution images. Most of these systems are being utilized to measure the directional wave spectra, with some systems also providing wave height estimates and sea surface elevation maps. More recently, the Naval Surface Warfare Center, Carderock Division (NSWCCD) and others have begun to utilize these techniques for shipboard measurement of open ocean waves. All these efforts have led to higher fidelity data, as well as data that were previously unobtainable. In this paper we provide an overview and history of the development of COTS incoherent wave radar systems, analysis techniques, and capabilities, from early characterization of sea clutter return to the latest developments in image inversion and sea surface topography. This review and summary provides a foundation on which to develop analysis techniques for the higher fidelity data, using lessons learned to improve future analysis. While not intending to be exhaustive, this paper seeks to highlight the insights gained from both historical and recent applications of these techniques, as well as the difficulties and issues associated with shipboard measurements such as ship motion, logistical constraints, and environmental factors.
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van Essen, Sanne. "Variability in Encountered Waves During Deterministically Repeated Seakeeping Tests at Forward Speed." In ASME 2019 38th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/omae2019-95065.
Abstract Numerical seakeeping codes for ships at forward speed in waves are often validated or tuned based on experiments, which makes knowledge about the experimental variability essential. This variability was evaluated using repeat tests during a state-of-the-art seakeeping campaign. A steep wave condition over the longitudinal basin axis (waveA) and a less steep oblique wave condition (waveB) were studied. Overall similarity as well as individual crest height, steepnesses and timing variability are discussed, because ship response is not equally sensitive for every point in the wave time series. The variability of the measured incoming wave crests and their timing increases with distance from the wave generator for waveA. The crest height variability for waveB is lower and more constant over the basin length (because the propagation distance to the model is constant in oblique waves and wave breaking is less likely). It was shown that only a small part of the variability close to the wave generator is caused by ‘input’ uncertainties such as the accuracy of the wave generator flap motions, measurement carriage position, their synchronisation and measurement accuracy. The rest of the variability is caused by wave and basin effects, such as wave breaking instabilities and small residual wave-induced currents from previous tests. The latter depend on previous wave conditions, which requires further study. Further work on the influence of the wave variability on the variability of ship motions, relative wave elevation along a ship and impact loads on deck of a ship at forward speed will be presented in a next publication.
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Inman, D., and S. Jenkins. "Erosion and accretion waves from Oceanside Harbor." In OCEANS '85 - Ocean Engineering and the Environment. IEEE, 1985. http://dx.doi.org/10.1109/oceans.1985.1160252.
Soloviev, Alexander V. "Ocean upwelling system utilizing energy of surface waves." In 2016 Techno-Ocean (Techno-Ocean). IEEE, 2016. http://dx.doi.org/10.1109/techno-ocean.2016.7890650.
Shugan, Igor V., Hwung-Hweng Hwung, and Ray-Yeng Yang. "Internal Waves Impact on the Sea Surface." In ASME 2011 30th International Conference on Ocean, Offshore and Arctic Engineering. ASMEDC, 2011. http://dx.doi.org/10.1115/omae2011-49870.
The impact of subsurface currents induced by internal waves on nonlinear Stokes surface waves is theoretically analyzed. An analytical and numerical solution of the modulation equations are found under the conditions close to the group velocity resonance. It is shown that smoothing of the down current surface waves is accompanied by a relatively high-frequency modulation while the profile of the opposing current is reproduced by the surface wave’s envelope. The possibility of generation of an internal wave forerunner, that is a modulated surface wavepacket, is established. Long surface waves can form the wave modulation forerunner ahead of the internal wave, while the relatively short surface waves create the trace of the internal wave. Modulation of surface waves by the periodic internal wave train may have the characteristic period less than the internal wave period and be no uniform while crossing the current zone. Surface wave excitation by internal waves, observable at their group resonance is efficient only on the opposing current.
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Brandt, A., S. E. Ramberg, and M. F. Shlesinger. "NONLINEAR DYNAMICS OF OCEAN WAVES." In Symposium. WORLD SCIENTIFIC, 1992. http://dx.doi.org/10.1142/9789814537247.
Hinsinger, Damien, Fabrice Neyret, and Marie-Paule Cani. "Interactive animation of ocean waves." In the 2002 ACM SIGGRAPH/Eurographics symposium. New York, New York, USA: ACM Press, 2002. http://dx.doi.org/10.1145/545261.545288.
Mehlum, Even. "Large-scale optics: ocean waves." In 15th Int'l Optics in Complex Sys. Garmisch, FRG, edited by F. Lanzl, H. J. Preuss, and G. Weigelt. SPIE, 1990. http://dx.doi.org/10.1117/12.22253.
Del Pizzo, Rebecca, and Vincent Quevedo. Ocean Waves. Ames: Iowa State University, Digital Repository, November 2015. http://dx.doi.org/10.31274/itaa_proceedings-180814-1278.
Ablowitz, Mark J., James H. Curry, Joe L. Hammack, and Harvey Segur. Nonlinear Ocean Waves. Fort Belvoir, VA: Defense Technical Information Center, September 1994. http://dx.doi.org/10.21236/ada285331.
Lvov, Yuri V. Weak Turbulence in Ocean Waves. Fort Belvoir, VA: Defense Technical Information Center, September 2003. http://dx.doi.org/10.21236/ada618359.
Lvov, Yuri V. Weak Turbulence in Ocean Waves. Fort Belvoir, VA: Defense Technical Information Center, September 2002. http://dx.doi.org/10.21236/ada626402.
Hwang, Paul A., William B. Krabill, Wayne Wright, Edward J. Walsh, and Robert N. Swift. Airborne Scanning Lidar Measurement of Ocean Waves. Fort Belvoir, VA: Defense Technical Information Center, March 1999. http://dx.doi.org/10.21236/ada361208.
Isakson, Marcia J. Scattering of Acoustic Waves from Ocean Boundaries. Fort Belvoir, VA: Defense Technical Information Center, September 2012. http://dx.doi.org/10.21236/ada574930.
Isakson, Marcia J. Scattering of Acoustic Waves from Ocean Boundaries. Fort Belvoir, VA: Defense Technical Information Center, September 2014. http://dx.doi.org/10.21236/ada617670.
Block, Gareth I., and Nicholas P. Chotiros. Electrokinetic Transduction of Acoustic Waves in Ocean Sediments. Fort Belvoir, VA: Defense Technical Information Center, September 2003. http://dx.doi.org/10.21236/ada628874.
Plant, William J. Bound Waves and Microwave Backscatter from the Ocean. Fort Belvoir, VA: Defense Technical Information Center, September 2001. http://dx.doi.org/10.21236/ada623675.
