Dynamics of the Makassar Strait

Waworuntu, Jorina; Garzoli, Silvia L.; Olson, Donald B.

doi:10.1357/002224001762882673

Cited by 11 publications

(3 citation statements)

References 12 publications

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“…From analyses of measurements in the Makassar Strait, Waworuntu et al [2001] concluded that a model of at least three layers is required to appropriately describe the Makassar Strait throughflow, which is consistent with our findings, where the bulk of this throughflow occurs in and is limited to the thermocline.…”

Section: Model Experiments: Barotropic Mode and No Local Windsupporting

confidence: 88%

The Makassar Strait throughflow and its jet

Mayer¹,

Damm²

2012

J. Geophys. Res.

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[1] A nested numerical model system has been set up to realistically simulate almost 40 years of the Indonesian throughflow (ITF). A global circulation model delivered the boundary values for sea surface height, temperature and salinity distribution to a fine resolution regional model of the ITF. The results of the regional model are in good agreement with measured data regarding velocity distribution, stratification as well as transported water masses, even though the division of the ITF volume transport into its western and eastern branches differs slightly from estimates from other model results or measurements. The results show a current system highly variable in space and time. Here, the analysis of model results focuses on the western branch of the ITF, the Makassar Strait throughflow, which is estimated to account for up to 50 to 80% of the entire ITF. The climatology and the mean vertical structure are presented. The model results show that the Makassar Strait throughflow occurs as a distinct current, which we termed Makassar Current. It is regionally developed as a subsurface jet, and it behaves like a western boundary current as it is attached to the western boundary (Sunda Shelf edge) along its entire path from the Sulawesi Sea through the Makassar Strait to its direct exit through the Lombok Strait. It appears from model experiments that the local wind stress counteracts the Makassar Strait throughflow.

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Section: Model Experiments: Barotropic Mode and No Local Windsupporting

confidence: 88%

The Makassar Strait throughflow and its jet

Mayer¹,

Damm²

2012

J. Geophys. Res.

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“…Hal ini dikarenakan kedalaman 20-50 m merupakan lapisan homogen (Ilahude, 1979). Homogenitas tersebut menunjukkan nilai Suhu di perairan Laut Jawa memiliki nilai yang sama hingga kedalaman 50 m. Suhu di Laut Jawa juga mendapat pengaruh dari Arlindo yang membawa air hangat dari Selat Makassar dengan skala yang besar (Waworuntu et al, 2001). Pengaruh Arlindo ini ditunjukkan oleh adanya wilayah perairan panas pada saat periode Monsun Barat di Laut Jawa bagian Timur.…”

Section: Pengaruh Arlindo Terhadap Suhuunclassified

Pertukaran massa air di Laut Jawa terhadap periodisitas monsun dan Arlindo pada tahun 2015

Siregar¹,

Sari²,

Purba³

et al. 2017

Depik

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The Java Sea with a surface area about 467.000 km2, is located in the South East Sunda Shelf with the average of depth is 40 meters, affected by several phenomena, whether physical or meteorological. This research aims to analyze the characteristics of water masses in the Java Sea and its relationship with the periodicity of the monsoon and Indonesian Throughflow Water (ITF) phenomenon. Then analyze the exchange of water masses in the Java Sea. The data used are temperature and salinity to identify the characteristics of the water masses. Ocean currents data to identify ITF patterns and winds data to identify the monsoon patterns. The data used in 2015 from the Infrastructure Development of Space Oceanography (INDESO) sites with a resolution of 1/12°. The method used is a descriptive analysis of spatially and temporally. The results show that averaging seasonal found that southeast monsoon period salinity is higher (31-34 psu) than northwest monsoon period (29.5-33 psu), and southeast monsoon period temperature is lower (27-30.5°C) than northwest monsoon period (28.5-30.5°C). ITF phenomenon occurs in May through September and reaches its peak in June, July, and August. ITF strengthened in southeast monsoon and weakened in the northwest monsoon. ITF and monsoon have similar impacts on salinity and temperature in the Java Sea. The water masses in the Java Sea comes from the South China Sea and Makassar Strait. In the northwest monsoon, Java Sea filled by water masses of the South China Sea, while in the southeast monsoon phenomenon which coincides with ITF phenomenon, Java Sea water masses is filled by water masses from Makassar Strait. In the transition monsoon I and II, the Java Sea filled by the South China Sea and the Makassar Strait water masses.

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“…The moorings included temperature and temperature-pressure sensors. In addition, in close proximity to the moorings, there were pressure-inverted echo sounders (PIES) [Waworuntu et al, 2001]. In anticipation of mooring blowover, the ADCPs were set in the ''surface tracking'' mode and data can be corrected for the vertical oscillation; bin 1 is the closest to the ADCP sensor at 140 m depth while bin 25 is set at 52 m above the surface (8-m-depth bin increment).…”

Section: Introductionmentioning

confidence: 99%

Velocity and transport of the Makassar Strait throughflow

Susanto

Gordon

2005

J. Geophys. Res.

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Analyses of ocean current measurements from two moorings in the Makassar Strait (MAK‐1, December 1996 to July 1998, and MAK‐2, December 1996 to February 1998) with newly processed acoustic Doppler current profiler (ADCP) data provide a new estimate of transport and vertical velocity structure for this important passageway of the Indonesian Throughflow. The 7‐month record of the MAK‐1 ADCP and the 3‐month record of the MAK‐2 ADCP, nominally set at depths of 150 m, are extrapolated to the end of the mooring period using a surface layer relationship to the shallowest current meter at 200 m and to the regional winds. The southward transport within Makassar Strait is confined for the most part to the upper 750 m, above the blocking topographic sill of Makassar Strait. The transport maximum occurs within the thermocline (100–300 m). After the temporal mean flow has been removed, the vertical structure of the along channel flow in the upper 750 m is decomposed using the empirical orthogonal function (EOF) method. The first two modes contain 91% of the total variance. For the entire mooring period, the total depth‐integrated transport was 8.1 ± 1.5 Sv (Sv = 1 × 106 m3/s), with 7.9 ± 1.2 Sv for calendar year1997. During the peak of 1997/1998 El Niño from September 1997 to mid‐February 1998, the first mode time series displays northward flow, enhancing the vertical shear within the thermocline and reducing the mean throughflow to 4.6 ± 0.9 Sv.

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Dynamics of the Makassar Strait

Cited by 11 publications

References 12 publications

The Makassar Strait throughflow and its jet

The Makassar Strait throughflow and its jet

Pertukaran massa air di Laut Jawa terhadap periodisitas monsun dan Arlindo pada tahun 2015

Velocity and transport of the Makassar Strait throughflow

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