CICTERRA   20351
CENTRO DE INVESTIGACIONES EN CIENCIAS DE LA TIERRA
Unidad Ejecutora - UE
capítulos de libros
Título:
The continental shelf of the south-western Atlantic Ocean
Autor/es:
MARCOVECCHIO, J.E.; FREIJE, R.H.; DEPETRIS, P.J.
Libro:
Carbon and Nutrient Fluxes in Continental Margins: A Global Synthesis
Editorial:
Springer
Referencias:
Lugar: Heidelberg; Año: 2010; p. 248 - 265
Resumen:
The continental shelf of the South-Western Atlantic
Ocean (SWAO), which includes the area between 33
and 55◦S adjacent to the southeast South American
continent (Fig. 5.4.1), is a wide, open shelf highly
impacted by two major western boundary currents:
the Malvinas (Falkland) Current and the Brazil Curde
Oceanograf´ýa) has kindly contributed figures included in
this work. Prof. Kon-Kee Liu (Institute of Hydrologic and
Oceanic Sciences, National Central University) provided Sea-
WiFS images of the SWAO area.◦S adjacent to the southeast South American
continent (Fig. 5.4.1), is a wide, open shelf highly
impacted by two major western boundary currents:
the Malvinas (Falkland) Current and the Brazil Curde
Oceanograf´ýa) has kindly contributed figures included in
this work. Prof. Kon-Kee Liu (Institute of Hydrologic and
Oceanic Sciences, National Central University) provided Sea-
WiFS images of the SWAO area.de
Oceanograf´ýa) has kindly contributed figures included in
this work. Prof. Kon-Kee Liu (Institute of Hydrologic and
Oceanic Sciences, National Central University) provided Sea-
WiFS images of the SWAO area.Prof. Kon-Kee Liu (Institute of Hydrologic and
Oceanic Sciences, National Central University) provided Sea-
WiFS images of the SWAO area.
rent. Strong winds blowing off the continent are also
important in the nearshore region. The SWAO is a
very important oceanographic region with significant
exchange of materials between ocean and continent
passing through coastal and estuarine systems. This
continental shelf has an extreme variability not only
due to the responsiveness to the passage of weather
systems but also because river runoff, the meandering
boundary currents and synoptic mesoscale eddies
from the open ocean impinge on the continental margin
entraining waters from the coastal ocean (Piccolo,
1998). Little is known about the circulation,
dynamics, physical and biogeochemical processes,
because of the varied time and space scales over which
processes occur (Piccolo, 1998).
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250 J.E. Marcovecchio et al.
The goal of this review is to provide an updated
knowledge on the nutrient distributions within the
SWAO continental shelf, as well as their transport
and transformation, and the nutrient input from land
sources. The environmental characteristics of the
region (e.g. geomorphology, sedimentology, hydrography)
are summarized. In addition, a description of
the nutrient and chemical environment, as well as data
on primary productivity and carbon transfer within
the area are included. Finally, the riverine transfer
of carbon and nutrients to the S.W.Atlantic is also
considered.