Dinamika Seas dan Swell dari Laut China Selatan ke Teluk Jakarta: Studi Kasus Kejadian Badai Hagibis, November 2007
Keywords:
Seas, swell, model spektrum gelombang, rob, tinggi gelombang signifikan, Laut Cina Selatan - Teluk JakartaAbstract
Karakteristik dinamika seas dan swell di sepanjang perairan Laut China Selatan-Teluk Jakarta pada waktu terjadi Badai Hagibis (18"“27 November 2007) dikaji dengan menggunakan metode pemodelan spektrum gelombang untuk mengetahui kontribusi gelombang yang dibangkitkan angin (gelombang angin) terhadap kejadian rob tanggal 25 November 2007 di pantai utara Jakarta. Pada penelitian ini, dilakukan pula uji coba simulasi model spektrum gelombang yang mengacu pada kedalaman tetap (batimetri) dan pada kedalaman total (jumlah batimetri dan pasang surut astronomis) untuk mengetahui pengaruh pasang surut astronomis terhadap hasil simulasi model gelombang yang dibangkitkan angin. Hasil simulasi menunjukkan bahwa gelombang angin di Teluk Jakarta pada tanggal 25 November 2007 didominasi oleh swell dengan tinggi gelombang ~11 cm yang diduga berasal dari Laut China Selatan sebagai daerah pembangkitan badai.
Characteristics of seas and swell dynamics along South China Sea-Jakarta Bay waters during Cyclone Hagibis passage (18"“27 November 2007) have been studied using a spectral wave model to understand the magnitude of wind wave contribution to flooding event on November 25, 2007 along the northern coast of Jakarta. In this study, the model simulation was conducted using two kinds of water depth input, namely fixed water depth and timevarying water depths resulting from tides in order to obtain a better understanding of tidal influence on wind wave simulations. The simulated result shows that wind wave in the Jakarta Bay was dominated by swell with significant wave height of ~11 cm. It was expected that the swell propagated from the South China Sea as a storm generating area.
References
Abidin, H.Z., Andreas, H., Djaja, R., Darmawan, D., Gamal, M., 2008, Land subsidence characteristics of Jakarta between 1997 and 2005, as estimated using GPS surveys GPS, Solut, vol. 12, 23-32.
Carr, L.E., III, Elsberry, R.L., 1997, Models of tropical cyclone wind distribution and beta-effect propagation for application to tropical cyclone track forecasting, Mon. Wea. Rev., vol. 125, 3190-3209.
Chu, P.C., Qi, Y., Chen, Y., Shi, P., Mao, Q., 2004, South China Sea wind-wave characteristics. Part I: Validation of Wavewatch-III using TOPEX/Poseidon data, Journal of Atmospheric & Oceanic Technology, vol. 21, no. 11, 1718-1733.
Chu, P.C., Cheng, K.F., 2008, South China Sea wave characteristics during Typhoon Muifa passage in winter 2004, J. Oceanography, vol. 64, no. 1, 1-21.
DHI Water and Environment, 2005, MIKE 21 SW: Spectral Waves FM Module, User Guide, Denmark, 112 pp.
Diposaptono, S. Budiman, Agung, F, 2009, Menyiasati perubahan iklim di wilayah pesisir dan pulau-pulau kecil, PT. Sarana Komunikasi Utama, 359 pp.
Dodet, G., Bertin, X., Taborda, R., 2010, Wave climate variability in the North-East Atlantic Ocean over the last six decades. Ocean Modelling, vol. 31, no. 3-4, 120-131.
Hadi, S., Ningsih, N.S., Pujiana, K., 2005, Studi awal pemodelan medan gelombang di Laut Jawa dan karakteristik spektrum energi gelombang di Teluk Jakarta, Indonesian Journal of Marine Science, vol. 10, no. 3, 169-176.
IOC, IHO, BODC, 2003, General bathymetric chart of the oceans, Centenary Edition of the GEBCO Digital Atlas, BODC, Liverpool, U.K.
IPTEK VOICE, 15 Januari 2008, di dalam http://www.ristek.go.id/index.php?mod=News&conf=v&id=2429 (15 Januari 2012).
Ningsih, N. S., 2000, Three-dimensional model for coastal ocean circulation and sea floor topography changes: application to the Java Sea. PhD thesis, Kyoto University, Japan, 188 pp.
Ningsih, N.S., Hadi, S., Saputri, D.F., Hanifah, F., Rudiawan, A.P., 2010, Simulation of susceptible areas to the impact of storm tide flooding along northern coasts of Java. In: L.H. Wiryanto & S.R. Pudjaprasetya (Ed.). Proceedings of Conference on Industrial and Applied Mathematics (CIAM 2010), Bandung, 6 - 7 July, 170-178.
Ningsih, N.S., Suryo, W., Anugrah, S.D., 2011, Study on characteristics of residual water level in Jakarta, Semarang, and Surabaya waters - Indonesia and its relation to storm events in November 2007. Int. J. Basic & Appl.Sci.IJBAS-IJENS, vol. 11, no. 05, 31-37.
Semedo, A., Suaelj, K., Rutgersson, A., Sterl, A., 2011, A global view on the wind sea and swell climate and variability from ERA-40, J. Climate, vol. 24, no. 5, 1461-1479.
Semedo, A., 2018, Seasonal Variability of Wind Sea and Swell Waves Climate along the Canary Current: the Local Wind Eeffect, J. Mar. Sci. Eng., 6(28), doi:10.3390/jmse6010028: 1 - 24.
