2024-03-28T15:15:58Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/313042022-12-12T13:24:26Zcom_10261_123com_10261_8com_10261_262578col_10261_502col_10261_262581
00925njm 22002777a 4500
dc
Casas, David
author
Iglesias, Jorge
author
Vázquez, Juan Tomás
author
Somoza, Luis
author
León Buendía, Ricardo F.
author
Medialdea Cela, Teresa
author
Juan, Carmen
author
García, Marga
author
Ercilla, Gemma
author
2010
The Galicia Bank region is under the influence of different water masses (Mediterranean Outflow Water -MOW-, Labrador Sea Water –LSW-, North Atlantic Deep Water-NADW-, and Lower Deep Water –LDW-), and in this study we focussed in those features and deposits formed by their interaction
with the seafloor. The bottom-current features and their sedimentary deposits are one of the most widespread elements in the Galicia Bank region, and they are mapped mostly in the Galicia Bank, Transitional Zone, Deep Galicia Margin and Northwestern Flank provinces. These features comprise
erosive elements such as moats (a), furrows (b), and abraded surfaces (c) and depositional elements such as drifts (d) and sediment waves (e).
The bottom-current features and deposits identified in the Galicia Bank region define a complex contouritic system that
is fully described here for the first time. The currents erode, re-distribute and winnow the seafloor sediments of the Galicia Bank plateau, and those around the Highs and
topographic irregularities of the Transitional Zone, Deep Galicia Margin, and Northwestern Flank. This system is
generated by several water masses: MOW, LSW, NADW, and LDW, flowing at different depths and velocities and in different directions. Based on the current dynamics, two
largely different subsystems are defined: contourites developed by a tabular water mass with a multiple current dynamics; and contourites developed by a focused/confined
current.
http://hdl.handle.net/10261/31304
Contourite
MOW
LSW
NADW
Galicia
Ocean
Bank
Current
Outflow
Contourites in the Galicia bank (NW Iberian Atlantic)