Download or read book Structure and Variability of Internal Tides in Mamala Bay O ahu Hawai i written by and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Xvii, 227 leaves.
Download or read book Structure and Variability of Internal Tides in Mamala Bay O ahu Hawai i written by Michelle Lori Eich and published by . This book was released on 2003 with total page 454 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Internal Tides and Mixing in the Upper Ocean at the Hawaiian Ridge written by Joseph Patrick Martin and published by . This book was released on 2004 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dynamics of Shoaling Internal Waves in the Near shore written by Michael Ege Squibb and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Shoaling internal waves are common in many inner-shelf regions. Their arrival is characterized by dense pulses of water propagating into shallower coastal zones. These nonlinear internal waves have been investigated as a source of enhanced diapycnal mixing. Mamala Bay, on the south shore of the Hawaiian island Oahu, experiences consistent internal wave action. As the waves in this bay approach shore, they form into highly nonlinear boluses, or "bores, " which are observed up to the 12 m isobath. Two month long field experiments in the spring of 2010 and 2011 observed numerous shoaling bore arrivals at the 23 m site of the University of Hawaii's Kilo Nalu Near-shore Observatory. This project was designed to monitor the regional flows and the vertical structure associated with these internal wave events. It also measured fine-scale turbulence including direct measurements density fluxes using fast sampling acoustic Doppler velocimeters (ADVs), conductivity, and temperature (FastCT) probes. Measurements of turbulent velocities in coastal areas are subject to bias from surface wave induced flows. These must be removed to have an accurate estimate of the Reynolds shear stresses and turbulent kinetic energy (TKE) dissipation. Several different methods currently exist to identify and remove this wave bias. A novel method was created using the wave-tracking mode of a Nortek Acoustic Wave and Current Profiler (AWAC). A comparison of these methods shows that the most consistent, effective removal comes the Feddersen and Williams (2007) and Bricker and Monismith (2007) methods. However, the novel AWAC removal method is effective under certain wave conditions. The effectiveness of removal is assessed using Ogive curves, and comparison to a theoretical curve for turbulence in the absence of waves (Kaimal et al. 1972). The tower designed for this experiment tested assumptions about the optimum spacing of velocimeters for use with differencing methods. Wave removal methods lose effectiveness when the ratio of wave orbital velocity to mean velocity is above 0.8. Shoaling internal waves in Mamala Bay were identified by sudden drops in temperature and increases in salinity followed by high frequency fluctuations of both. The shape and composition of these high density pulses is characteristic of boluses of deeper offshore water which supports the hypothesis that internal tides are a mechanism for cross shore transport of deep water onto fringing reefs. These bores tended to arrive from the southeast, increased Reynolds shear stresses, and skewed bottom roughness estimates. Rapid fluctuations in density in trailing edges of bores are thought to be a place of enhanced mixing. The tower of ADVs directly measured the buoyancy flux, TKE production and dissipation at four different elevations in the bottom 8 meters of the water column. The arrival of bore events brought levels of stratification strong enough to control the fine scale turbulence. Furthermore, these measurements show the trailing edge of these bores was a location of increased vertical mixing, turbulent kinetic energy production, and dissipation. The efficiency of this mixing is similar to existing laboratory and computational models for mixing in a stratified fluid. It also matches with observations at other field sites.
Download or read book Ocean Mixing written by Michael C. Gregg and published by Cambridge University Press. This book was released on 2021-02-04 with total page 385 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book examines how large-scale processes drive centimetre-scale mixing throughout the stratified ocean. It explores the primary factors affecting mixing and turbulence, and reviews insights from laboratory studies and numerical modelling. It is an excellent reference for researchers and graduate students in oceanography and related fields.
Download or read book Oceanic Internal Tides Observations Analysis and Modeling written by Eugene G. Morozov and published by Springer. This book was released on 2019-06-04 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a detailed study of the structure and variability of internal tides and their geographical distribution in the ocean. Based on experimental analysis of oceanic measurements combined with numerical modeling, it offers a comprehensive overview of the internal wave processes around the globe. In particular, it is based on moored buoys observations in many regions in all oceans (Atlantic, Pacific, Indian, Arctic, and Southern) that have been carried out by researchers from different countries for more than 40 years as part of various oceanographic programs, including WOCE and CLIVAR. However, a significant portion of the data was collected by the author, who is a field oceanographer. The data was processed and interpreted on the basis of the latest knowledge of internal wave motion. The properties of internal waves were analyzed in relation to the bottom topography and mean state of the ocean in specific regions. Internal waves play a major role in the formation of seawater stratification and are responsible for the main processes of ocean dynamics, such as energy transfer and mixing. One of the most significant ideas presented in this book is the generation of internal tides over submarine ridges. Energy fluxes from submarine ridges related to tidal internal waves greatly exceed the fluxes from continental slopes. Submarine ridges form an obstacle to the propagation of tidal currents, which can cause the creation of large amplitude internal tides. Energy fluxes from submarine ridges account for approximately one fourth of the total energy dissipation of the barotropic tides. Model simulations and moored measurements have been combined to generate a map of global distribution of internal tide amplitudes. This book is of interest to oceanographers, marine biologists, civil engineers, and scientists working in climate research, fluid mechanics, acoustics, and underwater navigation.
Download or read book Mamala Bay Study written by and published by . This book was released on 1996 with total page 806 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Journal of Physical Oceanography written by and published by . This book was released on 2006 with total page 1274 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Investigation of Variability of Internal Tides in the Tasman Sea written by Дмитрий Бражников and published by . This book was released on 2021 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: Surface tides, when obstructed by bottom relief, give rise to periodic oscillations within the stratified oceanic interior. Such transformation of the depth independent (barotropic) tide into internally propagating (baroclinic) waves comprises 1/3 of the global energy losses from the surface tide. Internal waves of tidal period known as internal tides tend to have low vertical shear and hence are very stable and long lived. They have been observed to propagate essentially unchanged across ocean basins. Details of the internal tide wave life-cycle are not well known, yet turbulent dissipation powered by the slow decay of these waves is one of the key processes shaping deep ocean water properties. The Tasman Sea stands out as a natural laboratory to investigate the internal tide life cycle. In this dissertation, the generation and propagation of internal tides were examined by means of realistic simulations of ocean circulation under varying conditions, and were compared to observations obtained during the Tasman Tidal Dissipation Experiment (TTIDE). The simulations reveal that the barotropic-to-baroclinic conversion is intensified at the Macquarie Ridge near New Zealand by coupling with secondary, nonlocally produced internal tides. Because of this complexity, regionally varying hydrographic conditions drive remarkable temporal and spatial variability of internal tide generation. The internal tides that are created at the ridge constructively superpose into a spatially confined, beam-like feature (Tasman beam) that radiates across the Tasman Sea over 1000 kilometers from its generation region and reaches the Tasman shelf. The beam is described well at first order by simple plane wave propagation theory, but also exhibits non-plane wave characteristics associated with diffraction. Additional intricacy arises from development of a standing wave, the result of the beam's reflection near Tasmania. Temporal changes include hydrography-induced refraction and strong perturbations from interactions with eddies. It is concluded that in-situ mooring measurements and ship surveys of internal tides exhibit a great deal of apparent spatial and temporal variability that can be difficult to interpret. This variability can largely be eliminated in the analysis of numerical models which allow the underlying wave field energy life cycle to be quantified.
Download or read book Propagation of the Internal Tide from the Hawaiian Ridge written by Luc Rainville and published by . This book was released on 2004 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Estuarine and Coastal Modeling written by and published by . This book was released on 2002 with total page 1108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Oceans 2001 MTS IEEE written by and published by . This book was released on 2001 with total page 748 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Estuarine and Coastal Modeling written by Malcolm L. Spaulding and published by . This book was released on 2002 with total page 1100 pages. Available in PDF, EPUB and Kindle. Book excerpt: This collection contains 66 papers on marine environmental modeling presented at the Seventh International Conference on Estuarine and Coastal Modeling, held in St. Petersburg, Florida, November 5-7, 2001.
Download or read book Oceanic Internal Tides written by Eugene G.. Morozov and published by . This book was released on 2018 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a detailed study of the structure and variability of internal tides and their geographical distribution in the ocean. Based on experimental analysis of oceanic measurements combined with numerical modeling, it offers a comprehensive overview of the internal wave processes around the globe. In particular, it is based on moored buoys observations in many regions in all oceans (Atlantic, Pacific, Indian, Arctic, and Southern) that have been carried out by researchers from different countries for more than 40 years as part of various oceanographic programs, including WOCE and CLIVAR. However, a significant portion of the data was collected by the author, who is a field oceanographer. The data was processed and interpreted on the basis of the latest knowledge of internal wave motion. The properties of internal waves were analyzed in relation to the bottom topography and mean state of the ocean in specific regions. Internal waves play a major role in the formation of seawater stratification and are responsible for the main processes of ocean dynamics, such as energy transfer and mixing. One of the most significant ideas presented in this book is the generation of internal tides over submarine ridges. Energy fluxes from submarine ridges related to tidal internal waves greatly exceed the fluxes from continental slopes. Submarine ridges form an obstacle to the propagation of tidal currents, which can cause the creation of large amplitude internal tides. Energy fluxes from submarine ridges account for approximately one fourth of the total energy dissipation of the barotropic tides. Model simulations and moored measurements have been combined to generate a map of global distribution of internal tide amplitudes. This book is of interest to oceanographers, marine biologists, civil engineers, and scientists working in climate research, fluid mechanics, acoustics, and underwater navigation.
Download or read book Oceanic Abstracts written by and published by . This book was released on 1997-10 with total page 1070 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Environmental Setting and the Effects of Natural and Human related Factors on Water Quality and Aquatic Biota Oahu Hawaii written by Delwyn S. Oki and published by . This book was released on 2003 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Intakes and Outfalls for Seawater Reverse Osmosis Desalination Facilities written by Thomas M. Missimer and published by Springer. This book was released on 2015-04-07 with total page 551 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book assembles the latest research on new design techniques in water supplies using desalinated seawater. The authors examine the diverse issues related to the intakes and outfalls of these facilities. They clarify how and why these key components of the facilities impact the cost of operation and subsequently the cost of water supplied to the consumers. The book consists of contributed articles from a number of experts in the field who presented their findings at the "Desalination Intakes and Outfalls" workshop held at King Abdullah University of Science and Technology (KAUST) in Saudi Arabia in October, 2013. The book integrates coverage relevant to a wide variety of researchers and professionals in the general fields of environmental engineering and sustainable development.
