The Role of Decadal Kelvin Wave in the Western of Sumatra and Along the South Coast of Java using Frequency-Wavenumber 2D Spectral Analysis

  • Hanah Khoirunnisa politeknik negeri Batam
  • Reno Arif Rachman Agency for the Assessment and Application of Technology (BPPT), Jakarta, Indonesia
  • Nining Sari Ningsih Bandung Institute of Technology, Bandung, Indonesia
  • Fadli Syamsudin Agency for the Assessment and Application of Technology (BPPT), Jakarta, Indonesia
Keywords: decadal variability, sea surface height anomaly, Kelvin wave, frequency-wavenumber 2D spectral analysis

Abstract

This study observed the decadal variability of the sea surface height anomaly (SSHA) and identified the decadal Kelvin wave propagation along west-Sumatra and south coast of Java.  SSHA data and the vertical distribution of sea temperature for 64 years from HYCOM model resulted has already used in this research. There are several methods to identify the propagation of decadal Kelvin wave. These methods were low-pass filter by cut-off 1 and 8 years, visual analytic by using Hovmӧller diagram method, and frequency-wavenumber 2D spectral analysis to identify the Kelvin wave propagation and its period. The decadal Kelvin wave could be observed in west coast of Sumatra and along south coast of Java. There are three propagations of decadal Kelvin wave and their velocities were 1.029x10-3 m/s (1974 – 1976), 0.21 m/s (1985 – 1986), and 6.86x10-4 m/s for 1998 to 2001 trough west Sumatra and southern Java. The frequency-wavenumber 2D spectral analysis produced the improvement of Kelvin wave and it has the period of 7.25 years. The occurrence of the Kelvin wave has a relation to IOD index. The average of the IOD index when the decadal Kelvin wave was occurring must be the negative value, its value was a -0.21.

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References

Ashok, K., Chan, W.L., Motoi, T. and Yamagata, T., 2004. Decadal variability of the Indian Ocean dipole. Geophysical Research Letters, 31(24).

Clarke, C. O., P. J. Webster, and J. E. Cole. 2003. Inter-decadal Variability of the Relationship between the Indian Ocean Zonal Mode and East African Coastal Rainfall Anomalies. Journal of Climate, 16:548 – 554.

Cooley, J. W and J. W. Tukey. 1965. An algorithm for the machine calculation of complex Fourier series. Mathematics of Computation, 19:297–301.

Grinsted, A., J. C. Moore, and S. Jevrejeva. 2004. Application of the Cross Wavelet Transform and Wavelet Coherence to Geophysical Time Series. Nonlinear Processes in Geophysics, 11: 561 – 566.

Han, W., J. W. Wang, and J. Weiss. 2008. Interannual Variability and Decadal Change of Themocline Depth and Upper Ocean Heat Content in the Indian Ocean. Department of Atmospheric and Oceanic Sciences (ATOC). USA.

Iskandar, I., W. Mardiansyah, Y. Masumoto, and T. Yamagata. 2005. Intra-seasonal Kelvin Waves along the Southern Coast of Sumatra and Java. Journal of Geophysical Research, 110: C04013.

Khoirunnisa, H. 2015. The Interannual and decadal variability of the sea surface height anomalyaqlong the Southern of Java. Thesis of Oceanography study program. Bandung Institute of Technology.

Mahongo, S., M. Nguli, and J. Francis. 2014. Inter-annual and Decadal Oscillations of Sea Level in the Western Indian Ocean. Geophysical Research Abstracts, 16: EGU2014-6153-2.

Mann, M. E., and J. Park,1996. Joint spatiotemporal modes of surface temperature and sea level pressure variability in the northern hemisphere during the last century, J. Clim., (in press).

Mantua, N. J., and S. R. Hare. 2001. The Pacific Decadal Oscillation. Journal of Oceanography, 58: 35 – 44.

Ningsih, N. S., S. Hadi, I. Sofian, Kunarso, and F. Hanifah. 2012. Kajian Dampak Perubahan Iklim Terhadap Dinamika Upwelling Sebagai Dasar Untuk Memperkirakan Pola Migrasi Ikan Tuna di Perairan Selatan Jawa – Nusa Tenggara Barat dengan Menggunakan Model Transpor Temperatur Laut. Laporan Riset dan Inovasi KK.Institut Teknologi Bandung. Bandung.

Park, W. S., and I. S. Oh. 2000. Interannual and Interdecadal Variations of Sea Surface Temperature in the East Asian Marginal Seas. Progress in Oceanography, 47: 191 – 204.

Qian, W., H. Hu, Y. Deng, and J. Tian. 2001. Signals of Interannual and Interdecadal Variability of Air-Sea Interaction in the Basin-Wide Indian Ocean.Atmosphere – Ocean, 40: 293 – 311.

Roisin, C.B. and M. B. Jean. 2008. Introduction to Geophysical Fluid Dynamics. Academic Press.

Saji, N. H., B. N. Goswami, P. N. Vinayachandran, and T. Yamagata. 1999. A Dipole Mode in the Tropical Indian Ocean. Nature, 401: 360 – 363.

Schott, F. A., S. P. Xie, and J. P. McCreary Jr. 2009.Indian Ocean Circulation and Climate Variability.Reviews of Geophysics, 47: RG1002.

Sambodho, K., Zikra, M., Yunita, N. F., & Syahroni, N. (2017). Variability of Sea Surface Chlorophyll and Temperature Using Remote Sensing to Support Marine Aquaculture in Indonesia. International Journal of Civil Engineering and Technology, 8(8).

Sprintall J., A. L. Gordon, R. Murtugudde, and R. D. Susanto. 2000. A Semiannual Indian Ocean forced Kelvin Wave Observed in the Indonesian Seas in May 1997. Journal of Geophysical Research, 105: 17,217 – 17,230.

Stewart, R. H. 2008. Introduction To Physical Oceanography. Department of Oceanography Texas A & M University.

Susanto, D. R., A. L. Gordon, and Q. Zheng. 2001. Upwelling along the Coasts of Java and Sumatra and its Relation to ENSO. Geophysical Research Letters, 28: 1599 – 1602.

Syamsudin, F., A. Kaneko, and D. B. Haidvogel. 2004. Numerical and observational estimates of Indian Ocean Kelvin Wave intrusion into Lombok Strait. Geophysical Research Letters, 31: L24307.

Syamsudin, F. 2004. Semiannual Kelvin Waves Propagation Along the South Coast of Sumatra – Jawa – Bali and The Lesser Sunda Islands Observed by TOPEX/POSEIDON and ERS – ½ Satellites. PROC. ITB Eng. Science, 36 B: 133 – 139.

Tomczak, M., and J. S. Godfrey. 2001. Regional Oceanography: An Introduction. Permagon.Tarrytown. New York.

Wang, Y. H. 2010. The Tutorial: S-Transform. National Taiwan University.ROC.

Wisha, U. J., & Khoirunnisa, H. Sea Surface Temperature Rising Trend and Its Influence on the Coral Mortality in Pagai Strait, Mentawai Islands, Indonesia. International Journal of Civil Enggineerig and Technology (IJCIET), 8(10), 725-734.

Yuan, Y., Chan, C. J., Zhou, W., & Li, C. (2008). Decadal and interannual variability of the Indian Ocean Dipole. Advances in Atmospheric Sciences, 25(5), 856-866.

Published
2020-03-30
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