Seasonal variation of water transport through the Karimata Strait

Four trawl-resistant bottom mounts, with acoustic Doppler current profilers (ADCPs) embedded, were deployed in the Karimata Strait from November 2008 to June 2015 as part of the South China Sea-Indonesian Seas Transport/Exchange and Impact on Seasonal Fish Migration (SITE) Program, to estimate the v...

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Bibliographic Details
Published in:Acta oceanologica Sinica 2019-04, Vol.38 (4), p.47-57
Main Authors: Wang, Yan, Xu, Tengfei, Li, Shujiang, Susanto, R. Dwi, Agustiadi, Teguh, Trenggono, Mukti, Tan, Wei, Wei, Zexun
Format: Article
Language:English
Subjects:
Climatology
Current data
Doppler sonar
Earth and Environmental Science
Earth Sciences
Ecology
El Nino
Engineering Fluid Dynamics
Environmental Chemistry
Fish
Fish migration
Fisheries
Laboratories
Marine & Freshwater Sciences
Migrations
Ocean currents
Oceanography
Pressure gradients
Profilers
R&D
Research & development
Seasonal variation
Seasonal variations
Straits
Surface water
Trade winds
Transport
Volume transport
Water transport
Water transportation
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Summary:Four trawl-resistant bottom mounts, with acoustic Doppler current profilers (ADCPs) embedded, were deployed in the Karimata Strait from November 2008 to June 2015 as part of the South China Sea-Indonesian Seas Transport/Exchange and Impact on Seasonal Fish Migration (SITE) Program, to estimate the volume and property transport between the South China Sea and Indonesian seas via the strait. The observed current data reveal that the volume transport through the Karimata Strait exhibits significant seasonal variation. The winteraveraged (from December to February) transport is–1.99 Sv (1 Sv=1×10 6 m 3 /s), while in the boreal summer (from June to August), the average transport is 0.69 Sv. Moreover, the average transport from January 2009 to December 2014 is–0.74 Sv (the positive/negative value indicates northward/southward transport). May and September are the transition period. In May, the currents in the Karimata Strait turn northward, consistent with the local monsoon. In September, the southeasterly trade wind is still present over the strait, driving surface water northward, whereas the bottom flow reverses direction, possibly because of the pressure gradient across the strait from north to south.
ISSN:0253-505X
1869-1099
DOI:10.1007/s13131-018-1224-2