ULTIMO AGGIORNAMENTO BANCA DATI: 13/09/2024 13:00:57
A floating breakwater of new type was installed at the aquaculture ground of Kagoshima Prefecture Hegushi area for the renewal construction of the aquaculture ground. In 1999, after its installation, a destructive typhoon hit the West Japan, and it brought serious damage to various places. This floating ...
Artificial reefs fulfill a similar role to that of coral reefs in providing a suitable living environment for fish and a vast array of other marine life and microorgansisms. Recent studies have demonstrated the value of investigating the flow phenomena in and around artificial reefs as a means of identifying ...
Initiated by the DEMO 2000 program for technology demonstration in the oil & gas sector in Norway, 5 oil companies have formed the joint industry project “Offshore Arctic Data Collaboration” (OADC). The objective of the project is to secure that the vast amounts of publicly accessible environmental ...
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 ...
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 ...
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 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 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 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 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: 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: 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 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 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 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. 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 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: 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: 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: 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, ...