![]() The measurements are a result of numerous scientific voyages to the Weddell Sea, measuring the temperature and saltiness of the oceans from the surface to the seabed.Ĭonductivity, Temperature and Depth equipment returning to the shipĭr Povl Abrahamsen, a physical oceanographer at BAS and co-author, says: “As part of our long-term monitoring, we try to investigate these sections every one or two years. ![]() Using decades of ship-based observations, alongside satellite data, the team discovered that these waters have been declining in volume over the past 30 years. But these key observations from the Weddell Sea show that changes in the dark abyss can take place over just a few decades.” “We used to think that changes in the deep ocean could only occur over centuries. ![]() The research from the British Antarctic Survey (BAS) and the University of Southampton is the first observational evidence that long-term changes to the winds and sea ice are influencing bottom water production in the Weddell Sea - one of the largest producers of dense bottom water.ĭr Alessandro Silvano from the University of Southampton, who is a co-author of the study, says: “The shrinking of deep waters in Antarctica can have far reaching consequences, from reducing the ability of the ocean to absorb carbon associated with human activities to decreasing the oxygen supply to abyssal waters, affecting deep ecosystems. This presentation highlights the experience and lessons learned gained during the subsea production system installation, turret fabrication and all the planning and challenges faced during the FLNG mooring, offshore installation and SURF hook up activities.Published: 12 June 2023 Conductivity, Temperature and Depth equipment deployed in the Antarctic Oceanĭeep ocean water in Antarctica is warming and shrinking at an alarming rate with significant consequences for the global climate and the world’s oceans, according to new research involving the University of Southampton.Īntarctic Bottom Water is the coldest, densest water mass on the planet, and it plays a crucial role in regulating the ocean’s ability to store heat and capture carbon 90 per cent of human-induced global heating and almost a third of the extra carbon released since the start of the industrial revolution has been absorbed by the ocean.Ī new study, published today in the journal Nature Climate Change, presents observational evidence from the Weddell Sea in Antarctica showing that these waters have shrunk by 20 per cent over the past 30 years, while shallower waters warmed at a rate five times higher than the rest of the global ocean. FLNG departed the fabrication yard in South Korea mid-November 2021 and arrived in Mozambique operations site in early January 2022 with all the offshore installation campaign for the mooring and hook up of the subsea production system occurring in the most challenging period due to the potential for cyclones to occur. Installation operations and Drilling & Completion campaigns have been successfully executed with the support of Pemba logistic bases. SURF installation involved subsea structures (Manifolds and Xmas Trees), flexible flowlines & risers, umbilicals and multibore wellhead jumpers. Subsea wells completion development has been carried out between March and November 2021 by drillship in SIMOPS with the Installation campaigns throughout 2021. The subsea production well is equipped with a 7x2’’ Horizontal Xmas Tree including choke and wet gas flow meter system. Subsea dual headers and 2 hubs integrated manifolds allows production collection from gas producers, control (hydraulic and electrical) and chemical distribution to each well. Coral Sul Subsea Production System consists of three (3) production clusters with a dedicated double looped subsea flowline and an umbilical for control and chemical supply. Coral-Sul FLNG has an internal non-disconnectable turret system to transfer fluids and control to the subsea field and it is the world deepest and largest internal turret for ultra-deep water designed to sustain cyclonic conditions. It is the world’s first ultra-deep water FLNG, Africa’s first full function open sea FLNG and first in Mozambique. The FLNG has a nameplate production of 3.4 MTPA and a design life of 25 years. The project is operated by ENI on behalf of Area 4 partners and is located 80km offshore northern Mozambique in the Rovuma Basin. Coral South Project comprises the installation of a floating liquefied natural gas facility (Coral Sul FLNG) to gather the gas production from six (6) wells at 2000 meters water depth.
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