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All Journal Indonesian Journal of Geography ILMU KELAUTAN: Indonesian Journal of Marine Sciences POSITRON Jurnal Matematika & Sains Jurnal Teknik Sipil Jurnal Fisika FLUX Journal of Geoscience, Engineering, Environment, and Technology JFMR (Journal of Fisheries and Marine Research) BULLETIN OF THE MARINE GEOLOGY Jurnal Segara International Journal of Remote Sensing and Earth Sciences (IJReSES) JURNAL METEOROLOGI DAN GEOFISIKA Jurnal Buana Akuntansi Journal of Fisheries & Marine
Nining Sari Ningsih
Program Studi Oseanografi, Jurusan Geofisika & Meteorologi
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Materials Science & Nanotechnology Mathematics Physics

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Journal : Journal of Geoscience, Engineering, Environment, and Technology

 1 
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; Reno Arif Rachman; Nining Sari Ningsih; Fadli Syamsudin
Journal of Geoscience, Engineering, Environment, and Technology Vol. 5 No. 1 (2020): JGEET Vol 05 No 01: March 2020
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2333.311 KB) | DOI: 10.25299/jgeet.2020.5.1.3889

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.
Co-Authors Agung B. Harto Agus Hartoko Agus Supangat Ainun Azhari Ajeng P. P. Oktaviani Amanda P Rudiawan Amelia Mustika Kusmarani Anastasia R. T. D. Tisiana Andri Ramdhani Arie Antasari Kushadiwijayanto Arief Rachman Arief Rachman Audi Rachman Ayi Tarya Denny Basardo Jonatan Sinaga Engki Andri Kisnarti Fadli Syamsudin Farrah Hanifah Farrah Hanifah Farrah Hanifah Gandhi Napitupulu Hadi Hermansyah Hanah Khoirunnisa Handiani, Dian Noor Hanifah, Farrah Harum Sukarmadijaya Irsan S. Brodjonegoro Irsan S. Brodjonegoro Kandaga Pujiana Kunarso Kunarso M. D. Utami Martha, Dian Martono Martono Martono Martono Muchamad Al Azhar Muh. Ishak Jumarang Muhammad Helmi Muhammad Najib Habibie Muliadi Muliadi Mulyono S. Baskoro Mutiara R Putri Mutiara R. Putri Nabil Nabil Nani Hendiarti Nani Hendriati Rahayu Sapta S. Sudewi Reno Arif Rachman Rima Rachmayani Rima Rachmayani Roni Kurniawan Safwan Hadi Safwan Hadi Safwan Hadi Safwan Hadi Safwan Hadi Safwan Hadi Safwan Hadi Safwan Hardi Siswanto Siswanto Syahruddin, Syahruddin Totok Suprijo