Seismic Stratigraphy of Miocene to Recent Sedimentary Deposits in the Central Scotia Sea and Northern Weddell Sea: Influence of Bottom Flows (Antarctica)

• Main Authors: Maldonado, Andrés, Barnolas, Antonio, Bohoyo, Fernando, Carlota Escutia, Carlta, Galindo Zaldívar, Jesús, Hernández-Molina, Francisco J., Jabaloy, Antonio, Lobo, F. J., Nelson, C. Hans, Rodríguez-Fernández, José, Somoza, Luis, Suriñach, Emma, Vázquez, Juan Tomás
• Format: Article in Journal/Newspaper
• Language: English
• Published: Springer 2006
• Subjects: Antarctic; Jane Basin; Scotia Sea; The Antarctic; Weddell; Weddell Sea; Antarc*; Antarctica
• Online Access: http://hdl.handle.net/10261/18746; https://doi.org/10.1007/3-540-32934-X_56

6 pages, 4 figures. Multichannel and high resolution seismic profiles from the central Scotia Sea and northern Weddell Sea show a sequence of seismic units interpreted to be the result of high-energy bottom currents. The seismic character of the units is indicative of active bottom flows, which developed extensive drifts under the influence of the Weddell Sea Bottom Water (WSBW) and the Antarctic Circumpolar Current (ACC). The opening of the connection between Jane Basin and the Scotia Sea is marked by a major regional unconformity that recorded a reorganization of bottom flows. The uppermost deposits are characterized by intensified bottom currents, which may reflect increased production of WSBW. The Spanish “Comisión Interministerial de Ciencia y Tecnología (CYCIT)” supported this research through Project ANT94-0020, ANT99-08, REN2001-2143/ANT and CGL2004-05646/ANT. Peer reviewed