ULTIMO AGGIORNAMENTO BANCA DATI: 13/09/2024 13:00:57
ABSTRACT: This study was conducted to develop a new eco-technology for treating hyper-eut&phicated water. From A&i1 to October 1996&d February to August 1997, a system which consists of 5Ocm-long ropes to collect bivalves that are located between the sea surface and a depth of 1.5 m. The integrated ...
ABSTRACT: A numerical method for the analysis of dynamic responses of a floating body partly composed of permeable walls is presented. The proposed method is based on the conventional 3- dimensional singularity distribution method but a special care is taken for the treatment of permeable walls, through ...
A time-independent finite-difference method is developed to solve for the fully nonlinear waves past floating breakwaters. The numerical model is first verified by comparing the results of wave past submerged breakwater with existing data. The interaction between waves and floating breakwater is studied. ...
ABSTRACT: This investigation, which incorporated the knowledge and practices of marine geotechnical engineering and marine geoacoustical surveying, could be split into two phases, i.e., reef subsidence prediction and reef status observation. The total amount of subsidence for reefs at Yung-An, Lin-Yang, ...
ABSTRACT: In Viet Nam and other Asian countries, shrimp production in coastal areas has developed rapidly over recent years. However, the expanses of shrimp ponds cause some problems including disease and environment pollution. A case study on environment quality of shrimp ponds in mangrove areas has ...
ABSTRACT: In this paper the authors (two mechanical engineers and one biologist) present the concept of a wave driven Mechanical Artificial Upwelling Device (MAUD-1) to pump deep ocean waters into surface layers and mix it there, thus increasing plankton production and leading ultimately to CO2 binding, ...
ABSTRACT The method of releasing submerged compressed air to create a vertical circulation has been applied to prevent freezing in the 10 km long Holandsfjord in northern Norway. A hydroelectric power plant discharges large amounts of fresh water to the inner part of the fjord. The fresh water supply ...
ABSTRACT. Jean-François Minster, President of Ifremer, France’s Research Institute for Exploitation of the Sea, has played an important role in the development of the study of oceans by satellite. He has authored numerous scientific publications and works, including La Machine Océan, and is a member ...
ABSTRACT A simplified version of the double peak spectral model for ocean waves (Torsethaugen, 1993, 1994, 1996) is described. For the locally fully developed sea, the spectral peak period Tpf is a function of the significant wave height, Hs, Tpf=af*Hs 1/3 with af slightly dependent on fetch. This ...
ABSTRACT This paper deals with the measurement and analytical system of wave direction of ship waves generated by an actual small vessel. Authors proposed the system measuring wave direction of ship waves generated by a real small vessel. The observations of ship waves were carried out with a triangle ...
ABSTRACT A floating multipurpose twin hull breakwater has been studied for the application to a fish cage. Since the floating offshore structure is to be exposed to harsh ocean environments, i.e. wave, wind, and current, these effects should be evaluated and considered in the design of the multipurpose ...
ABSTRACT: This study aims to clarify the characteristics of ice floe run-up through field observation and laboratory experiments. In field observation, run-up height, size and shape of ice floes on sloping beach, and topography of beach were measured. Laboratory experiments were also conducted in order ...
ABSTRACT: Hokkaido.s Okhotsk Sea coast is covered with drift ice in winter. This drift ice originates to the northeast of Sakhalin and arrives on Hokkaido coast in the beginning of January. Saroma Lagoon is located at the coast of Hokkaido facing the Sea of Okhotsk. It has two lagoon-mouths and leads ...
ABSTRACT In this paper, model experiments of discharged water and numerical calculations were carried out in order to clarify the behavior of the discharged water from the ocean nutrient enhancer named TAKUMI. The results of the experiments and the calculations show that temperature stratifications ...
ABSTRACT This paper presents a review of researches on environmental impact assessment for pumping-up and discharging deep ocean water, which was performed from 1999 through 2003 as a part of a national project organized by the New Energy and Industrial Technology Development Organization (NEDO). In ...
ABSTRACT This paper gives the comparisons on the force and movement characteristics of different cage models. Three models were selected including one Gravity Cage, one Sea Station Cage and one Quasi-Sea Station Cage. The Sea Station Cage model has equivalent enclosed volume with Gravity Cage model ...
ABSTRACT This investigation focuses on the motion of the floating circle collar of the gravity fish cage exposed to the open ocean waves. Both numerical computation and physical experiment were conducted. Regular waves were experimented at the water depth of 20 m. Wave height is 4, 5.5, or 7 m, and ...
ABSTRACT The development of single-point-mooring (SPM) marine cages has attracted much attention in recent years mainly due to its eco-friendly features with respect to its surrounding environment. An SPM net-cage system with a load cell was deployed in the testing field to investigate its dynamic ...
ABSTRACT The purpose of this study is to investigate wave behaviors in a harbor due to the porous floating dock and perforated quay-wall. In this study, model tests of wave behavior in front of a vertical perforated quay-wall and floating dock will be proceed in a wave flume under various condition ...
A special study is carried out to analyze the wave theory selection in the simulation of Gravity cage. Airy theory and Fifth Order Stokes theory are applied in the numerical model to simulate the behavior of the float collar and fishing net which are the main parts of Gravity cage bearing most waved-induced ...