Image of a subsurface current core in the southern South China Sea 1Key Laboratory of Marginal Sea Geology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
09 Jul 2013
2State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
3Key Laboratory of Submarine Geoscience, Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China
Received: 19 October 2012 – Published in Ocean Sci. Discuss.: 17 December 2012 Abstract. A legacy seismic transect acquired on 30 and 31 May 2009 in the southern
South China Sea (SCS) was reprocessed to reveal the thermohaline structure
of the water column. In the study region, a mesoscale subsurface lens with
extraordinary features was detected at 113.5° E, 11.5° N. It is centred at 450 m depth, occupies both the subsurface and
intermediate water from 250 to 600 m, and has an intersection diameter of
around 60 km. The simulated results from Hybrid Coordinate Ocean Model
reveal an eddy-induced subsurface current running southwestward along the
deep basin edge and suggest that the imaged lens is a snapshot of the
subsurface current core rather than a subsurface eddy.
Revised: 29 March 2013 – Accepted: 31 May 2013 – Published: 09 July 2013
Citation: Tang, Q. S., Wang, D. X., Li, J. B., Yan, P., and Li, J.: Image of a subsurface current core in the southern South China Sea, Ocean Sci., 9, 631-638, doi:10.5194/os-9-631-2013, 2013.