Propagation of Upwelling on Western-Coast Sumatra During Madden-Julian Oscillation Event

• Autorzy: Haryanto Y. D. , Fitrianti N. , Hartoko A. , Anggoro S. , Zainuri M.

Identyfikatory

DOI

10.12911/22998993/79420

• Języki publikacji: EN

Abstrakty

EN

Madden-Julian oscillation (MJO) is an atmospheric oscillation due to atmospheric phenomenon that occurs due to the uniformity of solar energy received at the surface of the earth, MJO is a natural occurrence in the seaatmosphere system. When the MJO is active, in general there will be a disturbance in the upper air which is then followed by an anomaly at sea surface pressure causing the changes in the wind on the surface. The changes in the surface wind affect the sea surface currents which then cause the occurrence of coastal upwelling downwelling. The upwelling process itself is a process whereby a sea mass is pushed upward along the continent, when the beach is to the left of the wind direction, the ecological transport leads to the mass of water away from the coast. As a result, there is a mass vacuum (divergence) in the coastal area. This mass void will be filled by the mass of water from the inner layer that moves to the surface. Indonesian territory itself is passed by MJO in phases 3, 4 and 5, while for Sumatra region is passed by MJO phase 3 and 4. This research aims to identify the propagation of coastal upwelling during MJO on the west coast of Sumatera, therefore the data of geopotential height, surface pressure sea ( MSLP), zonal and meridional components and sea surface temperature are used to analyze how the MJO effect on the coastal upwelling occurs in the research area. The analysis was conducted in June, July and August by comparing the atmospheric conditions at the time of strong MJO in phases 3 and 4 with normal viewing of anomaly geopotential height and MSLP and then seeing the anomaly surface wind changes from zonal wind (u) and meridional wind (v) and changes in SST in Sumatra region. The result shows that there is a change of GH and MSLP when MJO passes the west coast of Sumatra and then follows the change in the value of u and v and SST to identify the upwelling, while the anomaly change negative SST does not occur when MJO is active but has time lag (lag). In this analysis it was found that SST anomaly occurs when the anomaly changes in both the upper and surface water occurring after 5 days in phases 3, 4 and 5.

Słowa kluczowe

EN

MJO; upwelling; coastal upwelling; coastal downwelling; mean sea level pressure; potential velocity; zonal wind; meridional wind; sea surface temperature

• Wydawca: Polskie Towarzystwo Inżynierii Ekologicznej ; Lublin University of Technology
• Czasopismo: Journal of Ecological Engineering
• Rocznik: 2018
• Tom: Vol. 19, nr 1
• Strony: 122--128
• Opis fizyczny: Bibliogr. 6 poz., rys.

Twórcy

autor

Haryanto Y. D.

• State College of Meteorology Climatology and Geophysics, Jl. Perhubungan 1 No.5 Pondok Aren, Tengerang Selatan, 15221
• Coastal Resource Management, Faculty of Fisheries and Marine Sciences, Diponegoro University, Jl. Prof. H.Soedharto, SH, Tembalang, Semarang, 50275

autor

Fitrianti N.

• Indonesia Agency For Meteorology Climatology and Geophisycs, Jl.Angkasa I No.2 Kemayoran Jakarta Pusat, DKI Jakarta, 10720

autor

Hartoko A.

• Coastal Resource Management, Faculty of Fisheries and Marine Sciences, Diponegoro University, Jl. Prof. H.Soedharto, SH, Tembalang, Semarang, 50275

autor

Anggoro S.

• Coastal Resource Management, Faculty of Fisheries and Marine Sciences, Diponegoro University, Jl. Prof. H.Soedharto, SH, Tembalang, Semarang, 50275

autor

Zainuri M.

• Coastal Resource Management, Faculty of Fisheries and Marine Sciences, Diponegoro University, Jl. Prof. H.Soedharto, SH, Tembalang, Semarang, 50275

Bibliografia

• 1. Barnes R.S.K., Hughes R.N. 1988. An Introduction to Marine Ecology. Blackwell Scientific Publ., Oxford.
• 2. Bowden K.F. 1983. Physical Oceanography of Coastal Waters. Ellis Horwood Limited Publisher. Chichester.
• 3. Bowden K.F., Ferguson S.R. 1980. Variations with height of the turbulence in a tidally-induced bottom boundary layer. In: Nihoul JCJ (Ed.) Marine Turbulence. Elsevier, Amsterdam, pp. 378.
• 4. Cole J., McGlade J. 1998. Temporal and spatial patterning of sea surface temperatures in the northern Benguela; possible environmental indicators of clupeoid production (Proc. Benguela Dynamics, November 1996, Cape Town). S. Afr. J. Mar. Sci. (in press).
• 5. Hutabarat S., Evans S.M. 1985. Pengantar Oseanografi. Jakarta Penerbit Universitas Indonesia (in press).
• 6. Ihsan, Pemodelan konseptual upwelling terhadap target spesies ikan dan teknologi penangkapan ikan. 2013. Website: http://ptmadanimultikreasi.com.

Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).