Author: Publisher:
ISBN:
Category : Civil engineering
Languages : en
Pages : 598
Book Description
Civil Engineering in the Oceans IV
Author: Civil Engineering Practice
Author: Water Wave Kinematics
Author: A. TørumPublisher: Springer Science & Business Media
ISBN: 9400905319
Category : Technology & Engineering
Languages : en
Pages : 751
Book Description
Water wave kinematics is a central field of study in ocean and coastal engineering. The wave forces on structures as well as sand erosion both on coastlines and in the ocean are to a large extent governed by the local distribution of velocities and accelerations of the water particles. Our knowledge of waves has generally been derived from measurements of the water surface elevations. The reason for this is that the surface elevations have been of primary interest and fairly cheap and reliable instruments have been developed for such measurements. The water wave kinematics has then been derived from the surface elevation information by various theories. However. the different theories for the calculation of water particle velocities and acceleration have turned out to give significant differences in the calculated responses of structures. In recent years new measurement techniques have made it possible to make accurate velocity measurements. Hence. the editors deemed it to be useful to bring together a group of experts working actively as researchers in the field of water wave kinematics. These experts included theoreticians as well as experimentalists on wave kinematics. It was also deemed useful to include experts on the response of structures to have their views from a structural engineering point of view on what information is really needed on water wave kinematics.
Proceedings
Author: Proceedings of the ... International Conference on Offshore Mechanics and Arctic Engineering
Author: Proceedings
Author: Institution of Civil Engineers (Great Britain)Publisher:
ISBN:
Category : Civil engineering
Languages : en
Pages : 1626
Book Description
Civil Engineering in the Oceans
Author: Proceedings of the Institution of Civil Engineers
Author: Institution of Civil Engineers (Great Britain)Publisher:
ISBN:
Category : Civil engineering
Languages : en
Pages : 724
Book Description
Sea Grant Publications Index
Author: Ocean Seismo-Acoustics
Author: T. AkalPublisher: Springer Science & Business Media
ISBN: 1461322014
Category : Science
Languages : en
Pages : 898
Book Description
Seafloor investigation has long been a feature of not only seismology but also of acoustics. Indeed it was acoustics that produced depth sounders, giving us the first capability of producing both global and local maps of the seafloor. Subsequently, better instrumentation and techniques led to a clearer, more quantitative picture of the seabed itself, which stimulated new hypotheses such as seafloor spreading through the availability of more reliable data on sediment thickness over ocean basins and other bottom features. Geologists and geophysicists have used both acoustic and seismic methods to study the seabed by considering the propagation of signals arising from both natural seismic events and man-made impulsive sources. Although significant advances have been made in instrumentation, such as long towed geophysical arrays, ai r guns and ocean bot tom seismometers, the pic ture of the seafloor is still far from complete. Underwater acoustics concerns itself today with the phenomena of propagation and noise at frequencies and ranges that require an understanding of acoustic interaction at both of its boundaries, the sea surface and seafloor, over depths ranging from tens to thousands of meters. Much of the earlier higher frequency (>1 kHz) work included the characterization of the seafloor in regimes of reflection coefficients which were empirically derived from surveys. The results of these studies met with only limited success, confined as they were to those areas where survey data existed and lacking a physical understanding of the processes of reflection and scattering.