... column and seafloor effects. This paper concentrates on the fluid tailings and their discharge back into the sea. We also address potential environmental effects of large-scale environmental impact experiments in due time before industry conducts pilot mining operations, as well as the disposal of mud...

... obtained experimental data such as discharge rate of fluids, differential pressure between inlet and outlet of sand column, we conducted a numerical simulation for laboratory-scale experiment in order to clarify permeability characteristics of supercritical CO2 in porous media. As relative permeability...

... channels of sulfide minerals under HPEMP is considered. It is shown that the gas outflow from channels can be an additional destructive factor in the processes of the electric pulse discharge disintegration of mineral complexes. It is shown that the effect of HPEMP changes chemical surface composition...

... is supported by the results of many researches on natural upwelling, e.g. Ryther's classical report (1969). dilution rate marine primary production ts diagram dow riser pipe discharge observation data mixed water seawater takumi upstream oil & gas density current generator deep ocean...

... assessment seafloor disturbance central indian basin reduction upstream oil & gas metals & mining monitoring reservoir characterization experiment restoration recolonisation cruise sharma discharge macrofauna sediment proceedings social responsibility benthic environment...

... ABSTRACT: The mathematical model intended for the prediction of suspended solids dispersion in sea offshore area is described. Suspended solids are largely provided by human activities such as dredging or discharges of cuttings from offshore drilling platform. Some results of calculations...

... ABSTRACT: The Marino-Forum 21 initiated the research project on development of fishing grounds by utilizing Deep Ocean Water (called DOW here after) of 200 m deep. We plan to enhance the component of nutrient salts in the sea area concerned by discharging DOW into the euphotic layers aiming...

... be extrapolated or applied directly. Also, limitations of time and the operating mechanism of earlier experiments have left many questions unanswered questions such as the potential impact of sediment-water discharge in the water column. Hence, it is recommended that a large-scale environmental experiment...

... ABSTRACT: It is expected that some of the deep-sea sediments will be lifted along with water and manganese nodules by a hydraulic transportation system, and either be discharged near the seafloor or at the surface. This discharge may create a turbid sediment plume, changing the physicochemical...

...Proceedings ofthe'Third (1999) Ocean Mining Symposium Goa, India, November8-IO, 1999 Copyright © 1999 by The InternatJonal Society ofOffihore and Polar Engilleers ISBN 1-880653-45-1 BASELINE STUDIES AND EVALUATION OF EFFECTS OF SURFACE DISCHARGE OF DEEP:"SEA MINING - INDEX AREA S. N. de Sousa andS...

... ABSTRACT: During mining manganese nodules, if the suspended tailings would be discharged into the ocean, the particle fluxes with enrichment in heavy metals (Mn, Co, Ni, Cu) would pollute the" ocean. In this paper, on the bases of analyzing the settling characterization of the tailings...

... the prototype and second generation machines. These differences include the height at which sediment is discharged, the shape and number of dredge heads, the method of loosening or fluidising the sediment and the number of lift pumps. nodule japan deep sea impact expeliment cable disturbance...

... Abstract: The paper describes the application of mesoscale and large scale models in order to simulate the impact of deep-sea mining sediment discharges on the marine environment. The modelling efforts are crosslinked with the experiments of the TUSCII research group which provide supporting...