Makassar Strait throughflow, 2004 to 2006 報告人：沈茂霖 (Mao-Lin Shen) 2015/5/12 Seminar report

Mao-Lin Shen, Dept. of Atmospheric Sciences, NTU Page /5/12 Gordon, A. L., R. D. Susanto, A. Ffield, B. A. Huber, W. Pranowo, and S. Wirasantosa (2008), Makassar Strait throughflow, 2004 to 2006, Geophys. Res. Lett., 35(24), L Introduction Makassar Moorings Along-Channel Speed Along-Channel Transport and Transport-Weighted Temperature

Mao-Lin Shen, Dept. of Atmospheric Sciences, NTU Page /5/12 Introduction─ Seasonal variations-Circulation patterns Fig. Circulation patterns of the South China Sea and Indonesian Seas, with emphasis on the trans-South China Sea flows. The short-dashed lines represent subsurface currents. (by Guohong Fang)

Mao-Lin Shen, Dept. of Atmospheric Sciences, NTU Page /5/12 Introduction─ Fig. Temperature (upper panel) and salinity (lower panel) on the σ 25.5 surface, which lies within the upper thermocline. The Indonesian throughflow (ITF) can be traced as a relatively cool, fresher, band across the Indian Ocean near 12°S.

Mao-Lin Shen, Dept. of Atmospheric Sciences, NTU Page /5/12 Fig. Indonesian throughflow pathways and estimates of total volume transport. The lower panel shows the partitioning of transport above and below the Makassar Strait sill depth of ~680 m. Modified from Gordon and Fine (1996). (Gordon, 2005)

Mao-Lin Shen, Dept. of Atmospheric Sciences, NTU Page /5/12 Introduction─ Makassar Strait throughflow

Mao-Lin Shen, Dept. of Atmospheric Sciences, NTU Page /5/12 Along-Channel Speed A maximum speed within thermocline

Mao-Lin Shen, Dept. of Atmospheric Sciences, NTU Page /5/12 Along-Channel Speed

Mao-Lin Shen, Dept. of Atmospheric Sciences, NTU Page /5/12 Along-Channel Speed Fig. The timing and Southern Oscillation Index (SOI) value of transport measurement through the key passages of the Indonesian throughflow pathways. Only the Ombai measurements were made during a La Niña, albeit weak, condition.

Mao-Lin Shen, Dept. of Atmospheric Sciences, NTU Page /5/12 Along-Channel Transport and Transport-Weighted Temperature The seasonal fluctuations were influenced by Mindanao Current the ENSO influence on the ITF

Mao-Lin Shen, Dept. of Atmospheric Sciences, NTU Page /5/12 Thank you for your attention.