Vertical profiles of temperature, salinity, and light attenuation were
used in conjunction with underwater photography and water samples to
characterize the nature and dynamics of particle transport in an Antar
ctic fjord. Most of the particles are sand sized (0.1-2 mm) floccules
comprised of individual grains in the 5 to 50 mu m size range. The qua
rtz silt grains are derived from basal, debris laden meltwater origina
ting from beneath the submerged valley glacier. The meltwater buoyantl
y rises to form cold water interflows at mid water depths. Turbulent m
ixing near the seafloor also plays a role in the transport and break-u
p of floccules. Together the midwater cold tongues and near-bottom tur
bidity account for 87% of the total sediment load thus attesting to th
e importance of non-surface transport mechanisms in polar fjords.