![]() |
||||||||||||||
Australia: The Land Where Time Began |
||||||||||||||
Antarctic
Circumpolar Current Transport Across Kerguelen Plateau – Direct
Observations Park et al.
observed directly major pathways and transport of the Antarctic
Circumpolar Current across the Kerguelen Plateau during the Track cruise
in 2009. It is estimated that the net transport to the east, that passed
south of the Heard/ McDonald Islands, is 56 Sv (1 Sv = 106 m3/
s), of which 43 Sv is channelled tightly into the Fawn Trough that
appears to be a predominant gateway across the Kerguelen Plateau for the
flow associated with the Southern ACC Front (SACCF).
Also, there are 2 secondary passages, 1 of which is 6 Sv, which
is attached to the nearshore slope just to the south of the
Heard/McDonald Islands, while the other, of 7 Sv, passes through the
Princess Elizabeth Trough. There is also an additional 2 Sv that is
inferred just to the south of the Kerguelen Islands, the transport
across the entire plateau totalling 58 Sv, which accounts for 40 % of
the ACC that transits through the region, 147-152 Sv, and these
quantities are consistent with independent estimates for the Indian
Ocean sector of the Southern Ocean.
|
|
|||||||||||||
|
||||||||||||||
Author: M.H.Monroe Email: admin@austhrutime.com Sources & Further reading |