EGU2020-6353
https://doi.org/10.5194/egusphere-egu2020-6353
EGU General Assembly 2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Seasonal Evolution Features of Water Transport in the Lembeh strait of North Sulawesi

Junpeng Zhang1, Aijun Pan1, Fangfang Kuang1, Chunsheng Jing1, Muh Hasanudin2, Edi Kusmanto2, and Deny Sutisna2
Junpeng Zhang et al.
  • 1Third Institute of Oceanography, Ministry of natural resources, Xiamen, China
  • 2Research Center for Oceanography, Indonesia Institute of Sciences, Jakarta Utara, Indonesia

A three-dimensional baroclinic nonlinear numerical model is employed to investigate the seasonal evolution features of water transport in the Lembeh Strait of north Sulawesi. In general, the direction of water flow in the strait is oriented northward with a maximum volume of about 4x10-3Sv in August. Interestingly, the volume transport will decrease to nearly zero from November to January. Water transport is mainly controlled by seasonally changed monsoon forcing. The large-scale ocean circulation nearby North Sulawesi is weaker during November-January and stronger from July to September. In addition, the source of water bypasses the Lembeh Strait in different seasons is diagnosed and testified by tracer-release experiments. It suggests that most of the water through the narrow channel is emanated from the southern off the Strait, not only the surface water, but also the deep water brought by the upwelling and the internal tides.

How to cite: Zhang, J., Pan, A., Kuang, F., Jing, C., Hasanudin, M., Kusmanto, E., and Sutisna, D.: Seasonal Evolution Features of Water Transport in the Lembeh strait of North Sulawesi, EGU General Assembly 2020, Online, 4–8 May 2020, EGU2020-6353, https://doi.org/10.5194/egusphere-egu2020-6353, 2020