Lutjeharms, M. Rouault, C. Whittle and W.P.M. A late Pleistocene dataset of Agulhas Current variability However, any physical definition of a meeting point or dividing line between two oceans ignores the fact that currents don't just halt their flow at any point. It then turns southward along the coast of Mozambique in Africa. 8.3 Biomes | Biospheres to ecosystems | Siyavula Agulhas Return Current Reference Station Vetting Page SA AGULHAS, Research Vessel - Details and current position ... The tributaries include . The source water at its northern end is derived from Mozambique channel eddies (de Ruijter et al., 2002) and the East Madagascar Agulhas Current merges with the West Wind Drift when it crosses the Indian Ocean. 5, Schouten Stefan 3, 5, Hall Ian R. 4. Location: the Savannah biome is the largest biome in Southern Africa. Ocean Currents | Oceanflow The Agulhas Current is a large boundary current (similar to the Gulf Stream) that flows southward along the southeast African margin. Location of Repository Observations of an early Agulhas current retroflection event in 2001: A temporary cessation of inter-ocean exchange south of Africa? Date. South of Cape Agulhas the warm Agulhas Current that flows south along the east coast of Africa retroflects back into the Indian Ocean. L. M. Real-time and current position of SA AGULHAS (Research/Survey Vessel, MMSI: 601048000, IMO: 7628136) on ais live map is in South Atlantic Ocean with coordinates -33.91775° / 18.45120° and speed --- knots as reported on 2021-01-27 08:01 by AIS live data. (1) Guinea Current and Labrador Current (2) Brazil Current and Agulhas Current (3) Alaska Current and Falkland Current (4) Canaries Current and Gulf Stream Current. Main ship particulars are length of 134 m and beam of 23 m. These are the only subtropical mangrove stands in Africa. Author (s) Simon Margit H. 1, 2, Ziegler Martin 3, Barker Stephen 4, Van Der Meer Marcel T. J. A new location needs to be found that will be easier for the mooring to survive. Agulhas Current, South Africa - NASA A late Pleistocene dataset of Agulhas Current variability. Sudden eastward retreats of the Agulhas Current retroflection loop are linearly related to the shedding of Agulhas rings . PDF Climate Multiple Choice Relating Agulhas leakage to the Agulhas Current ... My current research focuses more on the warm, surface return flow of the THC, specifically the Agulhas Leakage. The massive engineering problems drilling for oil in the Agulhas current An undated handout picture provided by Royal Dutch Shell on 01 April 2010 shows Shell's Perdido platform in the Gulf of Mexico. When this relation is used in a linear regression and applied to almost 20 years of altimetry data, it yields a best estimate of the mean magnitude of Agulhas leakage of 13.2 Sv. After the confluence of these two parts, the current is called Agulhas Current. Agulhas Current, surface oceanic current that forms the western boundary current of the southern Indian Ocean. It was used to determine the location and southward progression of the Agulhas Current meander that is thought to have had a role to play in this marine heat wave, as well as in the inshore presence of . SA AGULHAS Current Position Where is the current position of SA AGULHAS presently? This vetting webpage compiles information provided by the community to help us find the optimal location for the mooring. Download : Download full-size image; Fig. The relation between the Agulhas Current\ud retroflection location and the magnitude of Agulhas leakage,\ud the transport of water from the Indian to the Atlantic Ocean,\ud is investigated in a high-resolution numerical ocean model.\ud Sudden eastward retreats of the Agulhas Current retroflection\ud loop are linearly related to the shedding of Agulhas rings,\ud where larger retreats . Abstract. However, I'm not getting a lot of specific info from Mercury, & I'm getting some conflicting info from a number of Merc dealers. Agulhasand Benguela currents. needed to travel. Variability in the Agulhas Current regime is key in shaping hydroclimate on the adjacent coastal areas of the African continent today as well as during past climates. The warm Agulhas current (Mozambique current) on the east causes the air to be warmer, more humid, unstable and increases the rainfall. Drifters' positions relative to the core of the Agulhas Current were determined in two steps. Location of Repository Millennial-scale Agulhas Current variability and its implications for salt-leakage through the Indian-Atlantic Ocean gateway . This latter obliquity-driven cycle is nearly in phase with changes in the annual mean insolation and air temperature at high southern latitudes. A world map showing relative commercial shipping density (in . By H.M. van Aken, J.R.E. Her IMO number is 9577135 and MMSI number is 601986000. In nearly a thousand years of crossing the Indian Ocean, The Agulhas Current is the strongest western boundary current in the Southern Hemisphere and plays an important role in the exchange of heat and salt between the Indian and South Atlantic Ocean basins, thereby affecting global climate. The ARC mooring was deployed 30 November 2010 at 30E, 38.5S and broke away from its anchor on 16 January 2011. 1. A linear relation is found between the magnitude of Agulhas leakage and the location of the Agulhas Current retroflection, both binned to three month averages. National Marine Fisheries Service Office of Habitat Conservation | NOAA National Centers for Environmental Information, National Marine Fisheries Service Office of Habitat Conservation. Affiliation (s) 1 : NORCE Norwegian Research Centre, Bjerknes Centre for Climate Research, Jahnebakken 5, 5007 Bergen, Norway. Within the Agulhas Current, isopycnals slope steeply upward toward the north and west and it is therefore misleading to refer to its water masses as having a characteristic depth. Agulhas Current system dynamics over the past 5 milion years (IODP Expedition 361) I'm a scientific participant on International Ocean Discover Program (IODP) Expedition 316 Southern African Climates (SAFARI).We sailed around southern Africa in February and March 2016, taking sediment cores from beneath the Agulhas Current. While retroflecting, it pinches off large ocean eddies (Agulhas rings) that drift into the South Atlantic Ocean and take enormous amounts of heat and salt into the neighbouring ocean. Current Status. The warm Agulhas current off the East Coast has a smaller quantity of fish but a greater diversity of species. Transports derived from CPIES are well . It flows down the east coast of Africa from 27°S to 40°S (Gordon, 1985). . A new location needs to be found that will be easier for the mooring to survive. Abstract The volume transport of the Agulhas Current was measured over a 3-yr period by an array of seven current meter moorings and four current- and pressure-recording inverted echo sounders (CPIES) deployed at 34°S. Biodiversity Features. Beal, who serves as chief scientist, spent one month aboard the research vessel Knorr in the southwest Indian Ocean deploying oceanographic instruments. ARC Background. SA AGULHAS The current position of SA AGULHASis at South Africa (coordinates 33.91775 S / 18.4512 E) reported 318 days ago by AIS. It flows down the east coast of Africa from 27°S to 40°S (Gordon, 1985). The location of Site U1479 is ideal for making proxy records for both the . Abstract. The surface and thermocline waters above the core location are presently dominated by the Agulhas Current, which transports about 70-78sverdrup (Sv) (1Sv=10 6 m 3 s 1 ) of tropical and subtropical waters along the The sloping is most dramatic south of 35°S where thermocline waters with a depth of 400 m in the interior can outcrop at the inshore edge of the current. It is found mainly in the western parts of Limpopo, the . In this study, the position of the Agulhas Current path is tracked by the following algorithm. total volume transport of the Agulhas Current; and the second state is a retroflection where most of the flow returns back directly to the South Indian Ocean via the SICC. The warm Mozambique-Agulhas Current skirts the east and south coasts as far as Cape Agulhas, while the cold Benguela Current flows northwards along the west coast as far as southern Angola. Places along the coast have a maritime climate (low temperature range) 3 3. 2 Tracking the Agulhas Current Isolines of (model) sea surface height have been used before to track the location of the Agulhas Current (e.g Lutjeharms and Van Ballegooyen, 1988; Boebel et al., 2003b). A warm sea surface temperature anomaly during Marine Isotope Stage (MIS) 10 was recognized and traced to . When it gets to the southern tip of Africa, most of the current turns back to the east, but some rings spin off into the Atlantic. First, the drifters were colocated to a satellite overpass using a 5-day threshold (according to Bryden et al., 2005, the Agulhas Current has a decorrelation time scale of 10 days). The relation between the Agulhas Current retroflection location and the magnitude of Agulhas leakage, the transport of water from the Indian to the Atlantic Ocean, is investigated in a high-resolution numerical ocean model. Vessel S.A. AGULHAS II is a passenger ship sailing under the flag of South Africa . Cape of Good Hope and Cape Agulhas of South Africa are two notable capes in the country and can be observed on the map above. This is the place where the warm-water Agulhas current of the Indian Ocean meets the cold water Benguela current of the Atlantic Ocean and turns back on itself. The site of the Cape Basin Record [Peeters et al., 2004] and MD96-2080 [Martínez-Méndez et al., 2010] are The Agulhas current flows in a southerly and westerly direction from the Mozambique channel between Africa and Madagascar, down round the south east coast of South Africa past the industrial cities of Durban, East London and Port Elizabeth and eventually interacts with the cold north flowing Benguela current off the southern tip of Africa at . Agulhas Return Current Reference Station Vetting Page. The current position of S.A. AGULHAS II is at South Africa (coordinates 33.90238 S / 18.42584 E) reported 2 mins ago by AIS.. By Margit H. Simon, Kristina L. Arthur, Ian Richard Hall, Frank J. C. Peeters, Benjamin R. Loveday, Stephen Barker, Martin . The amount of water it transports equals 70 million cubic metres per second, making it one of the largest western Boundary Currents in the world. Abstract. . Vessel SA AGULHAS is a passenger ship sailing under the flag of South Africa.Her IMO number is 7628136 and MMSI number is 601048000. The southern end of the Benguela system, the retroflection of the Agulhas Current, is responsible for a substantial amount of warm and salty water from the Indian Ocean to the South Atlantic. In this region, the ocean can have significant impacts on the atmosphere. The ARC mooring was deployed 30 November 2010 at 30E, 38.5S and broke away from its anchor on 16 January 2011. Satellite imagery and hydrographic data are used to illustrate the types of vortices generated by the Agulhas Current between 25 and 30°S. the Mozambique Current Accumulation of low potential vorticity along its long path makes the Agulhas retroflection more unstable in order for it to rejoin the interior The cold Benguela Current originates from upwelling of water from the cold depths of the Atlantic Ocean against the west coast of the continent. However, any physical definition of a meeting point or dividing line between two oceans ignores the fact that currents don't just halt their flow at any point. This vetting webpage compiles information provided by the community to help us find the optimal location for the mooring. The Benguela Current covers around 57,915 square mi (150,000 square km) when using the continental shelf as the offshore boundary line. 4c for the location of the Cape Basin). Continents, lines of latitude and longitude, oceans and ocean currents. The Agulhas current flows in a southerly and westerly direction from the Mozambique channel between Africa and Madagascar, down round the south east coast of South Africa past the industrial cities of Durban, East London and Port Elizabeth and eventually interacts with the cold north flowing Benguela current off the southern tip of Africa at . With climate change, the westerly winds are expected to intensify and recede to the south, and Agulhas leakage is predicted to increase. The Agulhas Current brings warm water south to meet the cold Southern Ocean, fuelling storms On any round-the-world cruise by the sunny route, there is the dilemma of how to cross the Indian Ocean. This is due to a process known as the. It is a "hot spot," where the ocean releases heat to the atmosphere and absorbs carbon dioxide. I'm hoping that someone The Agulhas Current has tributaries. But a portion of the Agulhas Current fails to make the hairpin turn and spills out into the Atlantic, so the current has a warming effect not just on southern Africa but on the entire Atlantic Ocean. The Agulhas Current retroflection is located at 19 E, which is also in good agreement with observations [Lutjeharms and van Ballegooyen, 1984]. Figure 1. Sudden eastward retreats of the Agulhas Current retroflection loop are linearly related to the shedding of Agulhas rings, where larger retreats generate larger rings. The vessel S.A. AGULHAS II (IMO: 9577135, MMSI 601986000) is a Research Vessel built in 2012 (9 years old) and currently sailing under the flag of South Africa. 2020-12-11. The Agulhas Current Time-Series Experiment, or ACT, was launched in April 2010 to measure the variability of the Agulhas Current using a combination of current meter moorings and satellite data. Schematic of Agulhas system with location of Agulhas slope core MD02-2594. Hi/Low, RealFeel®, precip, radar, & everything you need to be ready for the day, commute, and . continental slope is westward, which forces the Agulhas Current to separate at a more southwestward location than if there were no slanting African continent. In the relation, a more westward location of the Agulhas Current retroflection corresponds to an increased transport from the Indian Ocean to the Atlantic Ocean. Researchers turn to the shipping industry for data on ocean surface currents. S.A. AGULHAS II Current Position Where is the current position of S.A. AGULHAS II presently? Home; Grade 10 - Maritime Economics; 10.1 Learning Outcome 1: Maritime World 10.1.2 Continents, water masses, canals, sea currents and major ports Continents, lines of latitude, lines of longitude, oceans and ocean currents; Continents, lines of latitude and longitude, oceans and ocean currents The background colors are high-resolution satellite-observed SST during austral summer (1 January 2013; G1SST) [Jet Propulsion Laboratory, 2014]. The Agulhas Current is the western boundary current of the South Indian Ocean. The Agulhas Current is a large boundary current (similar to the Gulf Stream) that flows southward along the southeast African margin. Some of the eddies are of mesoscale magnitude and seem to be confined inshore of the current, whereas other vortices are larger, more intense, and involve the whole current. Because of this, it dominates the heat budget of the Indian Ocean, which impacts sea level rise, sea surface temperature, East African rainfall, and storm tracks. Oceans moderate temperatures along the coast, causing summer to be less hot and winters less cold than in the interior. The Agulhas Current transports surface and intermediate waters from the tropical Indian Ocean southward along the east coast of Africa. Sudden eastward retreats of the Agulhas Current retroflection loop are linearly related to the shedding of Agulhas rings, where larger retreats generate larger rings. In the relation, a more westward. It is strong and carries a large amount of heat. The data consist of XBT surveys, conductivity-temperature-depth- The upper waters experience the strongest density gain due to cooling, which occurs in the Agulhas Current and the southern part of the Cape Basin within the Agulhas Ring corridor (see Fig. Using the 14-km resolution, fil- A part of this current moving in between the African mainland and Mozambique is called the warm Mozambique Current. A new observation from the data is that, although the first northward meander of the Agulhas Return Current is constrained by bathymetry, its position does vary intermittently, remaining fixed in a given location for up to six months at a time. The Agulhas Current is formed by the confluence of the warm Mozambique and East Madagascar Currents, which meet south-west of Madagascar (not shown in the diagram). The Agulhas Current is the western boundary current of the South Indian Ocean. The Agulhas Current system is an important part of the warm return route of the THC. The latter hosts the southernmost tip of mainland Africa. The second swiftest current in all the world's oceans, theAgulhasis deadlier than the swiftest current (the Gulf But the Agulhastravels swiftly between two bodies of land--Madagascar and Mozambique (downward arrow on map). It flows southward along the southeast coast of Mozambique and the coast of South Africa before turning eastward to join the flow from Africa to Australia. The Agulhas Return Current is located off the southeast coast of Africa. They found the existence of a variable retroflection with a significant proportion of the EMC flowing toward the Agulhas Current and almost half propagating into the SICC. The Boating Forum - Optimax compression test results - I've been reluctant to post this to the board because I don't want to touch off another Opitmax bash-a-thon. The former is the meeting point of the warm Agulhas current and the cold Benguela current creating extreme weather events and choppy seas. de Ruijter. A linear relation is found between the magnitude of Agulhas leakage and the location of the Agulhas Current retroflection, both binned to three month averages. We determine 800-kyr sea surface temperature (SST) and salinity (SSS) records from the "precursor" region of the Agulhas current and show that these records contain strong 100-kyr and 41-kyr cycles. The exchange of heat and salt between the South Indian Ocean and South Atlantic Ocean, at the . [7] To assess the contribution of the wind stress forcing over the different ocean basins to the variability of the Agulhas Current, we calculated the Agulhas transport at 32 S (Figure 2). Position & Voyage Data Track on MapAdd PhotoAdd to fleet The Agulhas Return Current constitutes the intense flow along the Subtropical Convergence south of Africa. The Agulhas Current also plays a critical role in global ocean circulation which is why it's considered important for climatic conditions across the world. The Agulhas Current is the western boundary current of the South Indian Ocean. To demonstrate the use of the LACCE, the Agulhas Current position outputs from the algorithm computed over a 26-year period (1993 to 2018) are then used to describe the spatial and temporal variability of the Retroflection. the Benguela Current, its extension, and several Agulhas rings. The interactions between the air and the sea in this area are the largest found in the . The Agulhas Current is a warm current, flowing south along the east coast of southern Africa. Monitoring the Agulhas Current Through Maritime Traffic. Justification of Ecoregion Delineation The ecoregion is found within the subtropics where the warm water of the Agulhas Current runs along the eastern coast of South Africa. Location and General Description. In the relation, a more westward location of the Agulhas Current retroflection corresponds to an increased transport from the Indian Ocean to the Atlantic Ocean. In this paper, results obtained during Agulhas ring surveys performed on the R/V Seward Johnson in September 1997 [Roubicek et al., 1998] are presented and discussed. . Agulhas Return Current Reference Station Vetting Page. From the sea surface height (a) in the Arctic Ocean (b) in the Southern Ocean . When it gets to the southern tip of Africa, most of the current turns back to the east, but some rings spin off into the Atlantic. Ocean Current Temperature (warm Location (East Coast, West Direction of or cold) Coast, Equatorial, Polar) Movement Agulhas Current Benguela Current Brazil Current California Current Canaries Current Gulf Stream Kuroshio Current Labrador Current . The relation between the Agulhas Current retroflection location and the magnitude of Agulhas leakage, the transport of water from the Indian to the Atlantic Ocean, is investigated in a high-resolution numerical ocean model. The location where water flow uninterrupted between the Pacific, the Atlantic, and the Indian Oceans is _____. Our results show that the Agulhas Retroflection generally occurs in the region from 15.01-20.03°E and 40.47-38.44°S. Radiolarian-based paleotemperature transfer functions allowed to reconstruct the climatic history for the last 450 kyr at this location. ODP Site 1089 is optimally located in order to monitor the occurrence of maxima in Agulhas heat and salt spillage from the Indian to the Atlantic Ocean. Types and Severity of Threats. Agulhas Current (b) Benguela Current (c) California Current (d) Canary Current (e) West Australian Current. and 2018 La Niñas, there is a cooling south of Madagascar and in the Agulhas Current. The continental shelf near the Benguela is from 40 to 80 mi (64 to 128 km) wide. A tool that tracks the position of the warm and intense Agulhas Current along our east coast was derived from satellite sea surface height data. Find local businesses, view maps and get driving directions in Google Maps. Main ship particulars are length of 113 m and beam of 18 m. Maps below show the following voyage data - Present Location, NExt port, Estimated (ETA) and Prediced Time of arrival . There are no major changes in salinity seen in the Agulhas Current, but there is a highly saline mass of . It forms the connecting link between the generically similar South Atlantic Current and the South Indian Ocean Current, thus contributing to the water exchange between these two basins. A density loss takes place in the northern part of the Cape Basin, but of smaller magnitude compared to the gain. The location of Site U1479 is ideal for making proxy records for both the . CPIES extended the array farther offshore in order to capture, for the first time, the full Agulhas Current during meander events. Get the forecast for today, tonight & tomorrow's weather for Agulhas, Western Cape, South Africa. 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