Pola Arus Permukaan dan Kondisi Fisika Perairan di Sekitar Pulau Selayar pada Musim Peralihan 1 dan Musim Timur

Ahmad Bayhaqi; Mochamad Riza Iskandar; Dewi Surinati

doi:10.14203/oldi.2017.v2i1.71

Pola Arus Permukaan dan Kondisi Fisika Perairan di Sekitar Pulau Selayar pada Musim Peralihan 1 dan Musim Timur

Ahmad Bayhaqi, Mochamad Riza Iskandar, Dewi Surinati

Abstract

Surface Current Pattern and Physics Condition of Waters Around Selayar Island in the First Transitional and Southeast Monsoons. Seasonal observations of the flow of surface water and physics conditions around Selayar Island adjacent to Arlindo throughflow pathways of Makassar Strait have been conducted with a focus on the first transitional season and the southeast monsoon season. The purpose of this research is to obtain the pattern of seasonal surface current and physics characteristics of water column, i.e. temperature and salinity in Selayar Island waters during those seasons. The observations conducted on 22–27 May 2015 and 7–10 August 2015 illustrated the successive periods of the first transitional season and the southeast monsoon season. The methods used for taking oceanographic data such as temperature, salinity, and current were the stationary oceanographic measurement using CTD and currentmeter at 29 stations located in surrounding waters of Selayar Island. The surface current pattern generated from the interpolation process of the overall observation stations indicated that during the first transitional season the current moved eastward with an average velocity of 0.25 m/s. During the southeast monsoon season, the same pattern was still observed with a slightly higher average velocity of 0.26 m/s. The temperatures and salinity of Selayar Island waters during the southeast monsoon season were 2°C lower and 0.5 psu higher than during the first transitional season. Differences in mean current velocity values tended to be more affected by local tidal conditions. Different salinity was thought to be influenced by upwelling phenomena and local climatic factors such as rainfall, wind, and river flow discharge.

10.14203/oldi.2017.v2i1.71

Keywords

Selayar Island, surface current, water mass, masfirst transitional monsoon, southeast monsoon

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References

Aldrian, E., dan R. D. Susanto. 2003. Identification of Three Dominant Rainfall Regions within Indonesia and Their Relationship to Sea Surface Temperature. International Journal of Climatology 23(12):1435–1452. doi:10.1002/joc.950.

Atmadipoera, A., R. Molcard, G. Madec, S. Wijffels, J. Sprintall, A. Koch-Larrouy, I. Jaya, dan A. Supangat. 2009. Characteristics and Variability of the Indonesian Throughflow Water at the Outflow Straits. Deep-Sea Research Part I: Oceanographic Research Papers 56(11):1942–1954. doi:10.1016/j.dsr.2009.06.004.

Atmadipoera, A., dan P. Widyastuti. 2014. A Numerical Modelling Study on Upwelling Mechanism in Southern Makassar Strait. Jurnal Ilmu dan Teknologi Kelautan 6(2):355–371.

Azevedo, I. C., A. A. Bordalo, dan P. M. Duarte. 2010. Influence of River Discharge Patterns on the Hydrodynamics and Potential Contaminant Dispersion in the Douro Estuary (Portugal). Water Research 44(10):3133–3146. doi:10.1016/j.watres.2010.03.011.

Baja, S. 2012. Perencanaan Tata Guna Lahan dalam Pengembangan Wilayah. Andi Offset. Yogyakarta. p.322–323.

Belhassan, K. 2011. Relationship between River Flow , Rainfall and Groundwater Pumpage in Mikkes Basin (Morocco). Iranian Journal of Earth Sciences 3:98–107.

Bernawis, L. I. 2000. Temperature and Pressure on El-Nino 1997 and LaNina 1998 in Lombok Strait. Proceeding of The JSPS-DGHE International Symposium on Fisheries Science in Tropical Area. Agricultural University of Bogor, 21–25 August 2000, Bogor, Indonesia. 584 pp.

Chelton, D. 2013. Ocean-Atmosphere Coupling: Mesoscale Eddy Effects. Nature Geoscience 6:594–595. doi:10.1038/ngeo1906.

Clark, O. C., J. E. Cole, dan P. J. Webster. 2000. Indian Ocean SST and Indian Summer Rainfall: Predictive Relationship and Their Decadal Variability. Journal of Climate 13:2503–2519. doi:10.1175/15200442(2000)013<2503:IOSAIS>2.0.CO;2.

Dyer, K. R. 1973. Estuaries: A physical Introduction. Wiley-Interscience, New York and London. xv+140 pp.

Eaton, T. T. 2007. Analytical Estimates of Hydraulic Parameters For An Urbanized Estuary-Flushing Bay. Journal of Hydrology 347:188–196. doi:10.1016/j.jhydrol.2007.09.018.

Fedorov, A. V., R. C. Pacanowski, S. G. Philander, dan G. Boccaletti. 2004. The Effect of Salinity on the Wind-Driven Circulation and the Thermal Structure of the Upper Ocean. Journal of Physical Oceanography 34:1949–1966.

Godfrey, J. S. 1996. The Effect of Indonesian Throughflow on Ocean Circulation and Heat Exchange with The Atmosphere: A Review. Journal of Geophysical Research 101:12217–12237. doi:10.1029/95JC03860.

Gong, W., dan J. Shen. 2011. The Response of Salt Intrusion to Changes in River Discharge and Tidal Mixing During the Dry Season in The Modaomen Estuary, China. Continental Shelf Research 31:769–788. doi:10.1016/j.csr.2011.01.011.

Ilahude, A. G., dan A. L. Gordon. 1996. Thermocline Stratification within Indonesian Seas. J. Geophysic.Res. 101:12401–12409. doi:10.1029/95JC03798.

Ilahude, A. G. 1970. On The Occurrence of Upwelling in The Southern Makassar Strait. Mar. Res. Indonesia 10:3–29.

Janardanan, V., S. Amaravayal, C. Rhevicandran, N. T. Manoj, K. R. Muraleedharan, dan B. Jacob. 2015. Salinity Response To Seasonal Runoff in A Estuarine Complex System. J. Coast. Res. 31(4):869–878.

Kalangi, P. N. I., K. W. A. Masengi, M. Iwata, F. P. T. Pangalila, dan I. F. Mandagi. 2012. Profil Salinitas dan Suhu di Teluk Manado pada Hari-Hari Hujan dan Tidak Hujan. Jurnal Perikanan dan Kelautan Tropis VIII(3):90–93.

Lalli, C. M., dan T. R. Parsons. 1997. Biological Oceanography – an Introduction. 2nd edition. Elsevier- Butterworth-Heinemann. 314 pp. doi:10.1017/CBO9781107415324.004.

Liu, W. C., W. B. Chen, R. T. Cheng, M. H. Hsu, dan A. Y. Kuo. 2007. Modeling the Influence of the River Discharge on Salt Intrusion and Residual Circulation in Danshuei River Estuary, Taiwan. Continental Shelf Research 27(7):900–921.

Lukas, R., T. Yamagata, dan J. P. McCreary. 1996. Pacific Low-Latitude Western Boundary Currents and the Indonesian Throughflow. Journal of Geophysical Research 101:12209–12216. doi:10.1029/96JC01204.

Manoppo, A. K. S., Emiyati, S. Budhiman, dan B. Hasyim. 2014. Ekstraksi Informasi Keterlindungan Perairan dari Data Penginderaan Jauh untuk Kesesuaian Budi-daya Rumput Laut Di Pulau Lombok. Prosiding Seminar Nasional Penginderaan Jauh:598–609.

Pierson, W. L., K. Bishop, D. V. Senden, P. R. Horton, dan C. A. A. Adamantidis. 2002. Environmental Water Requirements to Maintain Estuarine Processes. Environmental Flows Initiative Technical Report, A Commonwealth Government Inititative & Department of Environment and Heritage, Australia. 158 pp.

Qu, T., Y. Du, J. Stachan, G. Meyers, dan J. Slingo. 2005. Sea surface Temperature and its variability in the Indonesian region. Oceanography 18(4):50–61.

Rasyid, A. 2010. Distribusi Suhu Permukaan pada Musim Peralihan Barat-Timur Terkait Dengan Fishing Ground Ikan Pelagis Kecil di Perairan Spermonde. Jurnal Torani 20(1):1–7.

Renault, L., B. Dewitte, P. Marchesiello, S. Illig, V. Echevin, G. Cambon, M. Ramos, O. Astudillo, P. Minnis, dan J. K. Ayers. 2012. Upwelling response to atmospheric coastal jets off central Chile: a modeling study of the October 2000 event. J. Geophys. Res. 117: C02030. doi:10.1029/2011JC007446.

Sakou, T. 1963. The Salinity Regime and Exchange Characteristics of A Shallow Coastal Bay System. Technical Report.63-21T. Department of Oceanography, Texas A & M University, College Station. 155 pp.

Shaha, D. C., Y. K. Cho, M. T. Kwak, S. R. Kundu, dan K. T. Jung. 2011. Spatial Variation of The Longitudinal Dispertion Coefficient in An Estuary. Hydrology Earth System Sciences 15:3679–3688. doi:10.5194/hess-15-36792011.

Sprintall, J., dan W. T. Liu. 2005. Ekman Mass and Heat Transport in Indonesian Seas. Oceanography 18(4):88–97.

Sprintall, J., S. Wijffels, A. L. Gordon, A. Ffield, R. Molcard, R. D. Susanto, I. Soesilo, J. Sopaheluwakan, Y. Surachman, dan H. M. Van Aken. 2004. INSTANT: A New International Array to Measure the Indonesian Throughflow. EOS 85(39):369–376. doi:10.1029/2004EO390002.

Sterl, A., dan W. Hazeleger. 2003. Coupled variability and air-sea interaction in the South Atlantic Ocean. Clim. Dyn. 2:559–571. doi:10.1007/s00382-003-0348-y.

Sugiyono. 2008. Metode Penelitian KuantitatifKualitatif dan R & D. Alfabeta. Bandung. 380 pp.

Susanto, R. D., A. Ffield, A. L. Gordon, dan T. R. Adi. 2012. Variability of Indonesia Throughflow within Makassar Strait, 20042009. Journal of Geophysical Research 117: C09013. doi:10.1029/2012JC008096.

Talley, L. D. 2002. Salinity Patterns in the Ocean. In M. C. McCracken & J. S. Perry (Eds). Encyclopedia of Global of Environmental Change. John Wiley & Sons, Ltd, Chicester.

Toggweiler, J. R., dan R. M. Key. 2003. Ocean Circulation: Thermohaline Circulation. In Encyclopedia of Atmospheric Sciences 4:1549–1555.

Toublanc, F., I. Brenon, T. Coulombier, dan O. Le Moine. 2013. Salinity and Suspended Sediment Dynamics in Response to Forcing Changes in A Small Macrotidal Estuary

(Charente, France). Coastal Dynamics 94(July):14–17. doi:10.1016/j.csr.2014.12.009.

Tubalawony. S., E. Kusmanto, dan Muhadjirin. 2012. Suhu dan Salinitas Permukaan Merupakan Indikator Upwelling Sebagai Respon Terhadap Angin Muson Tenggara di Perairan Bagian Utara Laut Sawu. Jurnal Ilmu Kelautan 17(4):226–239.

Yahya, M. A. 2000. Hubungan Karakteristik Fisika-Kimia Laut dengan Produksi Hasil Tangkapan Ikan Terbang (Cypsilurus sp.) di Selat Makassar. Tesis. Program Pascasarjana.Institut Pertanian Bogor. p.51–57.