... Abstract Sediment plumes are a key issue in assessing the environmental impact of seabed mining. The Metals Company carried out a pilot Nodule Collector test in the NORI-D license area in late 2022. The equipment test was closely monitored in the nearfield from the Allseas test mining vessel...

... Abstract In the emerging industry of deep-sea mining for minerals and deposits (e.g., polymetallic nodules for nickel, cobalt, copper, and manganese), more data is required to understand the effects of sediment plume generation and predict the distribution of disturbed sediments. There are two...

... offshore pipeline sustainability risk management midstream oil & gas air emission concentration cfd model carbon dioxide sustainable development social responsibility frequency co 2 database threat specialist subsea release pipeline system diameter plume loc frequency hazard...

...; Calculation of subsea gas jet and plume utilizing an analytical model; Calculation of gas dispersion in air with specialized CFD software. This paper presents a case study performed for each calculation step with the objective of increasing the calculation efficiency compared to a typical full CFD...

... technique used to analyze the degassed water discharge plume from that facility and describes the dynamics of the plume. We used a Reynolds-Averaged Navier Stokes (RANS) model to analyze the dynamics of the degassed water plume. The density of the water, and hence the plume dynamics, is heavily affected...

... the sustainable implementation of subsea infrastructure and the relative contribution of natural sources to global budgets. Multibeam echo soundings from cruise AT21-02 were used to define a region with several ~600 to 900 m tall gas plumes in the water column directly above cratered hummocky regions of the sea...

... Presentation of OTC-25341-MS Presentation of OTC-25341-MS Socolofsky , S.A. and Adams , E.E. ( 2002 ). Multi-phase plumes in uniform and stratified crossflow , J. of Hydraulic Research , Vol. 40 . OTC-25341-MS Designing a Permanent Underwater Monitoring Network...

... or lack the resolution and sensitivity necessary (conventional multibeam sonar) to enable detailed measurements and detect subtle features such as corrosion, leaks, or heat plumes. New approaches can reduce costs, increase efficiency, and enhance environmental performance. Specifically, this paper...

... phytoplankton. Closer to the shore, particulates may also include clays and silts from shoreline erosion and organic detritus from streams (IADC, 2007). Although sediment plumes do certainly occur in the direct neighbourhood of dredging operations, it is important to realise that dredging activities...

... time scale liability offshore technology conference multiphase flow reservoir simulation saline aquifer otc 19244 storage reservoir co 2 mechanism sequestration upstream oil & gas fluid dynamics stanford university flow in porous media multi-phase flow plume modeling...

... marine environment monitoring sensor memorial university water management risk assessment newfoundland environmental monitoring mukhtasor thesis plume upstream oil & gas offshore technology conference outfall concentration artificial intelligence auv vehicle otc 19271...

... will be withdrawn from about a 60-foot depth, passed through heat exchangers to warm the LNG to a gas, and then discharged at a reduced temperature to the GOM. The US EPA's 3- dimensional jet merging model "Visual Plumes" was used as the basic modeling tool to examine the mixing between the cooled "once-through...

.../s river plume, 150 cm/s near-bottom jets, and turbidity currents. Some of the processes are no doubt observed in other low latitude sites, especially near large rivers. Introduction In the past two years, exploration in the deepwater off Northern Angola has discovered several billion barrels...

... plumes. As each represents a key environmental issue facing the development of most offshore mineral deposits they are outlined in detail below. (i) Benthic Fauna Where unconsolidated sediments are the target of mineral mining, benthic fauna (organisms living within the upper O.5m of sediments...

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... destruction of the deep sea floor and its biota during nodule collection (harvesting), and by re-sedimentation of the re- sulting sediment plume, and l at the sea surface by sediment- (and possibly nutrient-) rich deep water discharge and turbi- dity in the bioactive photic zone, and by horizon- tal transport...

...aTe 6547 Development of an Integrated Profiling System for Field Studies of Plumes in the Marine Environment S.E. McDowell and C.S. Albro, Battelle Ocean Sciences Copyright 1991, Offshore Technology Conference This paper was presented at the 23rd Annual OTe In Houston, Texas, May 6-9, 1991...

... temporal monitoring is described using data from a mooring located in an urban reservoir in Los Angeles. Lastly, data is presented demonstrating the use of natural fluorescence to map the impact of a kraft mill effluent plume on local rates of primary production and chlorophyll a concentration. ODUCTK) N...

... of the plume. High turbulence levels occur, with frequencies which could coincide with the natural frequency of the structures. Results of the dynamic behavior of a drill ship in such flows, are also discussed. INTRODUCTION When a subsea well blows out or an underwater gas pipe line breaks a large amount...

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