The Southern Ocean is defined as those waters south of 40
degrees south, representing 20% of the world's ocean area
and truly a unique ocean setting. Ice sheets covering an area
as large as the Antarctic continent form a solid cover that
melts back every spring to its southern boundaries and the
permanently ice covered coastal regions. Water temperatures
range as low as minus 1.8 degrees Celsius, near the freezing
point of salt water. Invisible boundaries defined by ocean
currents and water properties within the circumpolar currents
separate the Southern Ocean in to bands of separate biological
and geochemical provinces surrounding Antarctica. It is in
these harsh and remote conditions that we have been studying
the ocean carbon cycle.
from the Bottom of the Earth
Ken's impressions on a voyage down under.
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Selected Scientific Publications
Buesseler, K.O., Barber, R.T., Dickson, M-L, Hiscock, M.R.,
Moore, J.K., and R. Sambrotto (2002). The
effect of marginal ice-edge dynamics on production and export
in the Southern Ocean along 170ºW (PDF). Deep Sea
Research II, (2003), 50, 579-60.
Buesseler, K.O., L. Ball, J. Andrews, J. K. Cochran, D. J.
Hirschberg, M. P. Bacon, A. Fleer and M. Brzezinski (2001).
ocean export of particulate organic carbon and biogenic silica
in the Southern Ocean along 170°W (PDF). Deep-Sea
Research II, 48, 4275-4297.
Buesseler, K. O., C. Benitez-Nelson, Rutgers van der Loeff,
M., Andrews, J., Ball, L., Crossin, G., and M. Charette (2001).
intercomparison of small- and large-volume techniques for
thorium-234 in seawater (PDF). Marine Chemistry, 74,
Nelson, D.M., R.F. Anderson, R.T. Barber, M.A. Brzezinski,
K.O. Buesseler, Z. Chase, R.W. Collier, M.-L. Dickson, R.François,
M. Hiscock, S. Honjo, J. Marra, W.R. Martin, R.N. Sambrotto,
F.L. Sayles and D.E. Sigmon. 2002. Vertical
budgets for organic carbon and biogenic silica in the Pacific
sector of the Southern Ocean (PDF), 1996-1998. Deep-Sea
Research Part II, 49 (9-10), 1,645-1,673.
Cochran, J. K, K. O. Buesseler, M. P. Bacon, H. W. Wang,
D. J. Hirschberg, L. Ball, J. Andrews, G. Crossin and A. Fleer
thorium isotopes (234Th, 228Th) as indicators of POC export
and particle cycling in the Ross Sea, Southern Ocean (PDF).
Deep-Sea Research II., 47 (15-16), 3451-3490.
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Conferences Presentations and Posters
"Melting ice, primary production, and
particle export in the Southern OceanWhat's the connection?"
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» US Joint Global Ocean Fluxes (JGOFS) - Southern Ocean Process Study