14
S.S. Jacobs, C.F. Giulivi
relatively low, either due to an apparent interdecadal décliné [15] or because 3-4
months of winter brine production remained ahead.
6 Future Work
An improved understanding of the océan circulation on this shelf could be
gained by additional long-term high-quality measurements, particularly of
salinity in the HSSW. A detailed study of the seasonal and interannual variability of the Antarctic Slope Front, including the cross-slope transport of water
masses and sea ice, could also be extremely valuable. At présent the imported
MCDW may contribute more to the maintenance of the Ross Sea Polynya than to
basal melting of the Ross Ice Shelf, but neither impact is well documented.
Exported shelf waters contribute to bottom water formation, but neither the volume nor the spatial and temporal variability of deep océan ventilation are
known in this sector. AASW properties and biological productivity will respond
to interannual changes in the sea ice formation and concentration. Satellite data
continue to provide valuable information about the annual sea ice cycle, but we
know much less about the sources, sinks and résidence time of AASW on the
continental shelf. One thing not lacking, is a host of unsolved problems for the
coming millennium.
Acknowledgements. We thank the individuals and institutions that provided the
data utilized in this study, and the polar programs of the National Science
Foundation and National Space and Aeronautics Administration that supported
our work. We are grateful to the CLIMA Project for its organization of the Lerici
Conférence on the Oceanography of the Ross Sea, where éléments of the material herein and in Jacobs and Giulivi [15] were First presented. This is contribution
5761 of the Lamont-Doherty Earth Observatory of Columbia University.
References
1. Jacobs SS, Amos AF, Bruchhausen PM (1970) Ross Sea oceanography and Antarctic bottom water
formation. Deep Sea Res 17:935-962
2. Killworth PD (1974) A baroclinie model of motions on Antarctic continental shelves. Deep Sea
Res 21(10):815-838
3. Jacobs SS, Gordon AL, Ardai JL ( 1979) Circulation and melting beneath the Ross Ice Shelf. Science
203:439-442
4. Ainley DG, Jacobs SS (1981) Sea-bird affinities for océan and ice boundaries in the Antarctic.
Deep Sea Res 28A(10):l 173-1185
5. Dunbar RB, Anderson JB, Domack EW, Jacobs SS (1985) Océanographie influences on sédimentation along the Antarctic continental shelf. In: Jacobs SS (ed) Oceanology of the Antarctic
Continental Shelf. Ant Res Ser 43. AGU, Washington, pp 291-312
6. Jacobs SS, Fairbanks RG, Horibe Y (1985) Origin and évolution of water masses near the Antarctic
continental margin: evidence from H2I8O/H216O ratios in seawater. In: Jacobs SS (ed) Oceanology
of the Antarctic Continental Shelf. Ant Res Ser 43. AGU, Washington, pp 59-85
7. Lewis EL, Perkin RG (1985) The winter oceanography of McMurdo Sound, Antarctica. In: Jacobs
SS (ed) Oceanology of the Antarctic Continental Shelf, Ant Res Ser 43. AGU, Washington, pp 145166
S.S. Jacobs, C.F. Giulivi
relatively low, either due to an apparent interdecadal décliné [15] or because 3-4
months of winter brine production remained ahead.
6 Future Work
An improved understanding of the océan circulation on this shelf could be
gained by additional long-term high-quality measurements, particularly of
salinity in the HSSW. A detailed study of the seasonal and interannual variability of the Antarctic Slope Front, including the cross-slope transport of water
masses and sea ice, could also be extremely valuable. At présent the imported
MCDW may contribute more to the maintenance of the Ross Sea Polynya than to
basal melting of the Ross Ice Shelf, but neither impact is well documented.
Exported shelf waters contribute to bottom water formation, but neither the volume nor the spatial and temporal variability of deep océan ventilation are
known in this sector. AASW properties and biological productivity will respond
to interannual changes in the sea ice formation and concentration. Satellite data
continue to provide valuable information about the annual sea ice cycle, but we
know much less about the sources, sinks and résidence time of AASW on the
continental shelf. One thing not lacking, is a host of unsolved problems for the
coming millennium.
Acknowledgements. We thank the individuals and institutions that provided the
data utilized in this study, and the polar programs of the National Science
Foundation and National Space and Aeronautics Administration that supported
our work. We are grateful to the CLIMA Project for its organization of the Lerici
Conférence on the Oceanography of the Ross Sea, where éléments of the material herein and in Jacobs and Giulivi [15] were First presented. This is contribution
5761 of the Lamont-Doherty Earth Observatory of Columbia University.
References
1. Jacobs SS, Amos AF, Bruchhausen PM (1970) Ross Sea oceanography and Antarctic bottom water
formation. Deep Sea Res 17:935-962
2. Killworth PD (1974) A baroclinie model of motions on Antarctic continental shelves. Deep Sea
Res 21(10):815-838
3. Jacobs SS, Gordon AL, Ardai JL ( 1979) Circulation and melting beneath the Ross Ice Shelf. Science
203:439-442
4. Ainley DG, Jacobs SS (1981) Sea-bird affinities for océan and ice boundaries in the Antarctic.
Deep Sea Res 28A(10):l 173-1185
5. Dunbar RB, Anderson JB, Domack EW, Jacobs SS (1985) Océanographie influences on sédimentation along the Antarctic continental shelf. In: Jacobs SS (ed) Oceanology of the Antarctic
Continental Shelf. Ant Res Ser 43. AGU, Washington, pp 291-312
6. Jacobs SS, Fairbanks RG, Horibe Y (1985) Origin and évolution of water masses near the Antarctic
continental margin: evidence from H2I8O/H216O ratios in seawater. In: Jacobs SS (ed) Oceanology
of the Antarctic Continental Shelf. Ant Res Ser 43. AGU, Washington, pp 59-85
7. Lewis EL, Perkin RG (1985) The winter oceanography of McMurdo Sound, Antarctica. In: Jacobs
SS (ed) Oceanology of the Antarctic Continental Shelf, Ant Res Ser 43. AGU, Washington, pp 145166