VARIATIONS OF INDONESIAN TRHOUGHFLOW TRANSPORT IN MALUKU AND HALMAHERA SEA RELATED TO THE OCCURRENCE OF EL NINO SOUTHERN OSCILLATION

Hasti Amrih Rejeki, B Betsi, Yogi Muhammad Andariwan

Abstract


ABSTRACT

Maluku and Halmahera Sea are the entry paths for the Indonesian Throughflow (ITF). This study examined the variation of their current speed, current direction, and transport during the ENSO phases on La Nina in 2010-2011 and El Nino in 2015-2016. The data used were the Marine Copernicus reanalysis data of u and v components of current velocity at 155 m and 266 m of depth. The data were processed by using GrADS to see the direction and speed of the current as well as by calculating the ITF transport. During La Nina, both at 155 m and 266 m of depths were found the eddy patterns. When El Nino occurred, the direction of currents in Maluku Sea was different from La Nina conditions, while the direction of currents in Halmahera Sea had no differences. Current velocity in both oceans at each depth was lower during El Nino than La Nina. The condition of ITF transport in the Maluku Sea during La Nina was dominated by southward movement with a smaller value than during El Nino which generally moved northward meanwhile in the Halmahera Sea had the opposite condition.

Keywords: current speed, current direction, ENSO, ITF, transport


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References


Arief, D., & S. P. Murray. (1996). Low-Frequency Fluctuations in the Indonesian Throughflow trough Lombok Strait, Journal of Geophysical Research, 101(C5), 12455-12464.

Atmadipoera, A. S., & Mubaraq, G. L. (2016). Structure and Variability of Indonesian Througflow at Sulawesi Sea. Jurnal Kelautan Nasional, 11(3), 159-174.

Atmadipoera, A. S., Horhoruw, S. M., Purba, M. & Nugroho, D. Y. (2016). Spatial and Temporal Variation of Indonesian Throughflow in the Makassar Strait. Jurnal Ilmu dan Teknologi Kelautan Tropis, 8(1), 299-320.

Atmadipoera, A. S., Jasmine, A. S., Purba, M., & Kuswardani, A. R. T. D. (2020). Upwelling Scharacteristics in the Southern Java Waters during Strong La Nina 2010 and Super El Nino 2015. Jurnal Ilmu dan Teknologi Kelautan Tropis, 12(1), 257 – 276.

Aziz, M. F. (2006). Gerak Air di Laut, Oseana, 31(4), 9-21.

Cresswell, G., Frische, A., Peterson, J., & Quadfasel, D. (1993). Circulation in the Timor Sea. Journal of Geophysical Research, 98(C8), 14.379-14.389

Fieux, M., Molcard, R., & Ilahude, A. G. (1996). Geostrophic Transport of the Pacific-Indian Oceans Throughflow. Journal of Geophysical Research, 101(C5), 12421-12432.

Ggweather. (2019). El Nino and La Nina Years and Intensities, https://ggweather.com/enso/oni.htm, accessed on 24 December 2019 and 13 January 2020.

Gordon, A. L. & Fine, R. A. (1996). Pathways of Water between the Pacific and Indian Oceans in the Indonesian Seas. Nature, 379, 146-149.

Gordon, A. L. (2005). Oceanography of the Indonesian Seas and Their Throughflow. Oceanography, 18(4), 14-27.

Gordon, A. L., Susanto, R. D., Ffield, A., Huber, B. A., Pranowo, W., & Wirasantosa, S. (2008). Makassar Strait Troughflow 2004 to 2006. Geophysical Research Letters, 35(L24605), 1-5.

Gordon, A. L., Susanto, R. D., & Ffield, A. (1999). Throughflow within Makassar Strait. Geophysical Research Letters, 26(21), 3325-3328.

Hasanudin, M. (1998). Arus Lintas Indonesia (ITF). Oseana, 23(2), 1-9.

Luick, J. L. (2001). Current Measurements in the Maluku Sea. Journal of Geophysical Research, 106(C7), 13.953-13.958.

Meyers, G. (1996). Variation of Indonesian Throughflow and the El Nino Southern Oscillation. Journal of Geophysical Research, 101(C5), 12255-12263.

Molcard, R., Fieux, M., & Ilahude, A. G. (1996). The Indo-Pacific Throughflow in the Timor Passage. Journal of Geophysical Research, 101(C5), 12.411-12.420.

Molcard, R., Fieux, M., & Syamsudin, F. (2001). The Troughflow within Ombai Strait. Deep-Sea Research I, 48, 1237-1253.

Molcard, R., Fieux, M., Swallow, J. C., Ilahude, A. G., & Banjarnahor, J. (1994). Low Frequency Variability of the Currents in Indonesian Cahnnels (Savu-Roti and Roti-Ashmore Reef). Deep-Sea Research I, 41(11/12), 1643-1661.

Murray, S. P., & Arief, D. (1988). Throughflow into the Indian Ocean through the Lombok Strait January 1985-January 1986. Nature, 333, 444-447.

Nanlohy, P., Nusaly, M., Eleewujaan, A. A., Luturmas, R. W., Latue, A. P., Supusepa, F., Lokollo, R., Andayani, H., & Elim, H. I. (2018). Variabilitas transport Volume Massa Air di Laut Banda Bagian Barat. Journal of Multidisciplanry Application on Philosophy and Science (JAMFAS), 1(1), 23-29.

Oktaviani, A. P. P., Ningsih, N. S., Brodjonegoro, I. S., & Tisiana, A. R. T. D. (2008). Analisis Sinyal El Nino Southern Oscillation (ENSO) dan Hubungannya dengan Variabilitas Arus Lintas Indonesia di Selat Lifamatola. Ilmu Kelautan, 13(4), 209 – 218.

Safitri, M., Cahyarini, S. Y., & Putri, M. R. (2012). Indonesian Throughflow Transport Variations and Oceanographic’s Parameter in Timor Seas as an Indication of ENSO Events. Jurnal Ilmu dan Teknologi Kelautan Tropis, 4(2), 369-377.

Sprintall, J., Wijffels, S. E., Molcard, R., & Jaya, I. (2009). Direct Estimate of the Indonesian Througflow Entering the Indian Ocean: 2004-2005. Journal of Geophysical Research, 114(C07001), 1-19.

Sudjono, E. H., Mihardja, D. K., & Ningsih, N. S. (2004). Indikasi Fluktuasi Arus Lintas Indonesia di Sekitar Selat Makassar Berdasarkan Model Numerik. Jurnal Geologi Kelautan, 2(1), 29-35.

Susanto, R. D., & Gordon, A. L. (2005). Velocity and Transport of the Makassar Strait Troughflow. Journal of Geophysical Research, 110(C01005), 1-10.

Tranchant, B., Reffray, G., Greiner, E., Nugroho, D., Koch-Larrouy, A., & Gaspar, P. (2016). Evaluation of an Oerational Ocean Model Configuration at 1/12⁰ Spatial Resolution for the Indonesian Seas (NEMO2.3/INDO12)-Part 1: Ocean Physics. Geoscientific Model Development, 9, 1037-1064.

Wang, L., Zhou, L., Xie, L., Zheng, Q., Li, Q., & Li, M. (2019). Seasonal and Interannual Variability of Water Mass Sources of Indonesia Throughflow in the Maluku Sea and the Halmahera Sea. Acta Oceanologica Sinica, 38(4), 58-71.

Wattimena, M. C., Atmadipoera, A. S., Purba, M., Nurjaya, I. W., & Syamsudin, F. (2018). Indonesian Throughflow (ITF) Variability in Halmahera Sea and Coherency with New Guinea Coastal Current. IOP Conference Series: Earth and Environmental Science, 176(1), 1-15.

Wyrtki, K. (1987). Indonesian Through Flow and the Associated Pressure Gradient. Journal of Geophysical Research, 92(C12), 12.941-12.946

Yuan, D., Li, X., Wang, Z., Li, Y., Wang, J., Yang, Y., Hu, X., Tan, S., Zhou, H., Wardana, A. K., Surinati, D., Purwandana, A., Ismail, M. F. A., Avianto, P., Dirhamsyah, D., Arifin, Z., & Storch, J. S. V. (2018). Observed Transport Variations in the Maluku Channel of the Indonesian Seas Associated with Western Boundary Current Changes. Journal of Physical Oceanography, 48, 1803-1813.




DOI: https://doi.org/10.21107/jk.v14i3.12083

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Published by: Department of Marine Sciences, Trunojoyo University of Madura