Observations of the Karimata Strait througflow from December 2007 to November 2008

Susanto, R. Dwi; Wei, Zexun; Adi, Rameyo T.; Fan, Bin; Li, Shujiang; Fang, Guohong

doi:10.1007/s13131-013-0307-3

Cited by 73 publications

(82 citation statements)

References 24 publications

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“…This circulation has been termed as the South China Sea throughflow (SCSTF) Wang et al 2006). The South China-Indonesian Seas Transport/Exchange (SITE) program in 2007-2016 measured the SCSTF in the Karimata and Sunda Strait (Fang et al 2010;Susanto et al 2013). Wyrtki (1961) provided the first estimate of the transport of the ITF based on hydrographic observations, sea level records, ship drifts, and climatological wind pattern, of 1.7Sv in the top 200 m. Since then, there have been exceptional efforts in determine the ITF transport from both direct in situ observations and inverse models based on basin scale hydrography surveys, with the ITF transport derived from the inverse models being sensitive to the model assumptions.…”

Section: Sources and Pathways Of The Itf Watermentioning

confidence: 99%

The Indonesian throughflow, its variability and centennial change

et al. 2018

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The Indonesian Throughflow (ITF) is an important component of the upper cell of the global overturning circulation that provides a low-latitude pathway for warm, fresh waters from the Pacific to enter the Indian Ocean. Variability and changes of the ITF have significant impacts on Indo-Pacific oceanography and global climate. In this paper, the observed features of the ITF and its interannual to decadal variability are reviewed, and processes that influence the centennial change of the ITF under the influence of the global warming are discussed. The ITF flows across a region that comprises the intersection of two ocean waveguides-those of the equatorial Pacific and equatorial Indian Ocean. The ITF geostrophic transport is stronger during La Niñas and weaker during El Niños due to the influences through the Pacific waveguide. The Indian Ocean wind variability associated with the Indian Ocean Dipole (IOD) in many years offsets the Pacific ENSO influences on the ITF geostrophic transport during the developing and mature phases of El Niño and La Niña through the Indian Ocean waveguide, due to the co-varying IOD variability with ENSO. Decadal and multi-decadal changes of the geostrophic ITF transport have been revealed: there was a weakening change from the mid-1970s climate regime shift followed by a strengthening trend of about 1Sv every 10 year during 1984-2013. These decadal changes are mostly due to the ITF responses to decadal variations of the trade winds in the Pacific. Thus, Godfrey's Island Rule, as well as other ITF proxies, appears to be able to quantify decadal variations of the ITF. Climate models project a weakening trend of the ITF under the global warming. Both climate models and downscaled ocean model show that this ITF weakening is not directly associated with the changes of the trade winds in the Pacific into the future, and the reduction of deep upwelling in the Pacific basin is mainly responsible for the ITF weakening. There is a need to amend the Island Rule to take into account the contributions from the overturning circulation which the current ITF proxies fail to capture. The implication of a weakened ITF on the Indo-Pacific Ocean circulation still needs to be assessed.

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Section: Sources and Pathways Of The Itf Watermentioning

confidence: 99%

The Indonesian throughflow, its variability and centennial change

et al. 2018

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“…Aliran massa air tersebut dikenal sebagai Arus Lintas Indonesia (Arlindo) yang melewati Selat Makassar sebagai jalur utama (Pranowo et al, 2005). Selain Selat Makassar, Selat Karimata juga merupakan salah satu jalur Arlindo (Susanto et al, 2013). Arlindo dapat dipengaruhi oleh fenomena yang terjadi di Samudra Pasifik seperti ENSO (El Niño Southern Oscillation) atau IOD (Indian Ocean Dipole) di Samudra India.…”

Section: Pendahuluanunclassified

“…Ketika musim barat, arus cenderung ke tenggara atau timur di Laut Jawa, sedangkan ketika musim timur arus bergerak ke barat laut atau barat di Laut Jawa (Gordon et al, 2012). Kondisi tersebut juga terjadi di Selat Karimata yaitu pada musim barat arus bergerak ke selatan dan ketika musim timur arus bergerak ke utara (Susanto et al, 2013).…”

Section: Pendahuluanunclassified

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Variation of Volume Transport and Variability of Current in Karimata and Gaspar Straits During 2010-2014 Based on Numerical Modeling

Anwar¹,

Putri²,

Setiawan³

2018

J. Ilmu dan Teknologi Kelautan Tropis

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Karimata Strait located between Kalimantan and Bangka Islands, while Gaspar Strait located between Bangka and Belitung Islands. Volume transport variations through Karimata and Gaspar Straits during 2010-2014 (HAMSOM). Daerah kajian yang disimulasikan terletak di 1°0′0′′ LS -4°30′0′′LS dan 104°0′15′′BT -110°30′0′′BT dengan resolusi horizontal sebesar 0,5′ (sekitar 0,94 km). Kecepatan arus hasil model memiliki korelasi yang besar dengan data pengukuran yaitu 0,85 untuk komponen zonal (u) dan 0,89 untuk komponen meridional (v) dengan tingkat signifikansi 95%. Dengan demikian hasil model dapat mewakili daerah kajian. Hasil analisis sinyal menunjukkan bahwa transpor volume di wilayah kajian sangat dipengaruhi oleh periode musiman. Selain angin musiman, pada periode 2010 -2014 juga terjadi El Niño dan La Niña dengan fasa lemah dan fasa sedang yang memengaruhi transpor volume. Rata-rata transpor volume dari 2010-2014 yang melewati Selat Karimata dan Selat Gaspar secara berturut-turut adalah -2,75 Sv dan -1,98 Sv (1 Sv = 10 6 m 3 /s). Tanda negatif pada transpor volume menunjukkan arah ke selatan dan positif ke utara. Arah transpor total ke selatan ini menunjukkan bahwa ada kemungkinan terdapat bagian dari Arus Lintas Indonesia

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“…The other interesting characteristic of the strait is being located in both big islands, Kalimantan and Sumatra. Hydrological complexities, human activities around the water and many rivers that flow into this strait contribute certainly to the environmental condition change (Alkausar, 2008;Susanto et al, 2013;Dewi, 2014). One of them is an increasing amount of materials that enter to the strait through raining and depositing atmospherics.…”

Section: Introductionmentioning

confidence: 99%