Seasonal Pattern of Wind Induced Upwelling Over Java-Bali Sea Waters and Surrounding Area

Siswanto, Siswanto; Suratno, Suratno

doi:10.30536/j.ijreses.2008.v5.a1228

Cited by 14 publications

(10 citation statements)

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“…Analisis variabilitas intensitas di selatan Jawa dilakukan dengan menggunakan data timeseries SPL dan konsentrasi klorofil-a (Klor-a) yang diperoleh dari data satelit (Susanto et al, 2001). Pada musim timur (bulan Juni hingga Oktober) intensitas upwelling mengalami peningkatan sehingga menyebabkan SPL lebih dingin dan serta Klor-a lebih tinggi dibandingkan pada musim barat (Ningsih et al, 2013;Siswanto & Suratno, 2008;Kunarso et al, 2012).…”

Section: Pendahuluanunclassified

Analisis Multilayer Variabilitas Upwelling Di Perairan Selatan Jawa

Sukresno

Jatisworo

Kusuma

2018

Jurnal Kelautan Nasional

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ABSTRAKVariabilitas upwelling di perairan selatan Jawa telah diidentifikasi. Analisis multilayer dilakukan dengan menggunakan data ARGO Float periode 2016 hingga 2017. Variabilitas suhu permukaan laut (SPL) dan klorofil-a (klor-a) dianalisis dengan menggunakan data satelit MODIS Aqua periode 2007 hingga 2017. Pengaruh El Nino Southern Oscillation (ENSO) terhadap upwelling dilakukan dengan menggunakan indeks Oceanic Nino Index (ONI), sedangkan pengaruh Indian Ocean Dipole (IOD) direpresentasikan dengan menggunakan indeks Dipole Mode Index (DMI). Dari hasil penelitian diketahui bahwa ENSO mempengaruhi intensitas upwelling. Pada periode el nino intensitasnya mengalami peningkatan yang diikuti oleh penurunan SPL dan naiknya konsentrasi klor-a, sebaliknya pada periode la nina terjadi penurunan intensitas yang diikuti naiknya SPL dan turunnya konsentrasi klor-a. Peningkatan intensitas juga terdeteksi pada saat terjadi periode IOD positif, sedangkan penurunan intensitas terjadi pada periode IOD negatif. ABSTRACT Upwelling variability in the Indian Ocean South of Java has been identified. Multilayer analysis was performed using ARGO Float data during 2016 -2017. Variability of sea surface temperature (SST) and chlorophyll-a concentration (chlor-a) were analyzed using Aqua MODIS satellite data during 2007 -2017. The influence of El Nino Southern Oscillation (ENSO) on upwelling intensity was conducted using the Oceanic Nino Index (ONI), while the influence of Indian Ocean Dipole (IOD) was represented by using Dipole Mode Index (DMI).Result of the study show that ENSO give high impact on upwelling variability. During el nino period, the intensity has increased, followed by a decrease in SPL and increased in chlor-a concentration, on the other hand during la nina period there is a decrease of intensity followed by an increase in SPL and a decrease in chlor-a concentration. Increased intensity was also detected during a positive IOD period, while decreased intensity was occurred during a negative IOD period.

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Section: Pendahuluanunclassified

Analisis Multilayer Variabilitas Upwelling Di Perairan Selatan Jawa

Sukresno

Jatisworo

Kusuma

2018

Jurnal Kelautan Nasional

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“…Intensitas kecepatan angin pada saat bergerak ke arah barat lebih besar daripada ke arah timur. Pada bulan Januari mewakili musim barat angin di atas Pulau Jawa dan sekitarnya bergerak ke timur dengan kecepatan berkisar 5-15 knot, pada bulan Juli mewakili musim timur angin permukaan di atas Samudera Hindia bergerak ke arah barat dengan kecepatan mencapai 25 knot [25].…”

Section: Hasil Dan Pembahasanunclassified

Karakteristik Angin Zonal Selama Upwelling Di Perairan Selatan Jawa Pada Kondisi Normal Dan Enso

Martono

2018

JMG

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ABSTRAKPerairan selatan Jawa dikenal sebagai salah satu lokasi upwelling di Indonesia. Penelitian upwelling di perairan ini sudah banyak dilakukan oleh para peneliti. Namun, penelitian tentang aspek-aspek atmosfer pada saat terjadi upwelling masih sedikit. Penelitian ini dilakukan untuk mengetahui karakteristik angin zonal selama upwelling di perairan selatan Jawa pada kondisi normal dan ENSO. Data yang digunakan terdiri dari suhu permukaan laut dari tahun 1984-2013 dan angin zonal dari tahun 1988-2011 yang diperoleh dari Physical Oceanography Distributed Active Center -National Aeronautics and Space Administration. Metode yang digunakan dalam penelitian ini adalah analisis deskripsi. Hasil penelitian menunjukkan bahwa angin zonal di perairan selatan Jawa dominan bergerak ke arah barat. Upwelling di perairan selatan Jawa Barat, Jawa Tengah dan Jawa Timur terjadi ketika angin zonal bergerak ke arah barat secara terus menerus lebih dari 2 bulan, kecepatan lebih besar dari 5 m/dt dan fluktuasi kecepatan kecil. Terdapat jeda waktu sekitar 1-1,5 bulan antara tiupan angin zonal sejajar pantai dengan proses upwelling. Intensitas upwelling paling kuat dan paling lama terjadi di atas perairan selatan Jawa Timur. Arus Lintas Indonesia mempunyai peranan penting terhadap peningkatan intensitas upwelling di selatan Jawa Timur. Intensitas upwelling selama periode El Niño lebih kuat, tetapi selama periode La Niña lebih lemah daripada kondisi normal. ABSTRACTThe southern waters of Java was known as one of upwelling locations in Indonesia. Research about of upwelling in this waters has been done by some researchers. However, research about of the atmospheric aspects during upwelling is still slightly. This research was conducted to understand the conditions of zonal wind during upwelling in the southern waters of Java at normal and ENSO conditios. The data consists of sea surface temperature from 1984-2013 and zonal wind from 1988-2011 obtained form Physical Oceanography Distributed Active Center -National Aeronautics and Space Administration. The method used in this research was description analysis. The results showed that zonal wind in the southern waters of Java was dominant move toward the west. Upwelling in the southern waters of West Java, Central Java and East Java occured when zonal wind moves westward continuously more than 2 months, greater speed of 5m/sec and small velocity fluctuations. There was lag time about 1-1.5 months between zonal wind blow parallel to the coast upwelling process. Upwelling intensity was strongest and longest occurred in the southern waters of East Java. Indonesian Throughflow has an important role on intensityincreasin of upwlling in the south of East Java. Intensity of upwelling during El Niño period more powerful, but during La Niña period is weaker than normal conditions.

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“…Berbagai penelitian tentang upwelling sudah banyak dilakukan di Indonesia (Wyrtki, 1961;Nontji, 1993;Gordon and Susanto, 2001;Susanto et al, 2004;Siswanto and Suratno, 2008), sehingga di beberapa wilayah perairan sudah dapat dibuktikan dan diketahui dengan pasti adanya proses upwelling. Namun di beberapa daerah lain adanya proses upwelling masih merupakan dugaan.…”

Section: Pendahuluanunclassified

Influences of Upwelling Duration and Intensity Based on Sea Surface Temperature Anomaly Toward Primary Productivity Variability in Indonesian Waters

Kemili¹,

Putri²

2012

J. Ilmu dan Teknologi Kelautan Tropis

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The existence of upwelling generally increases waters productivity. However, the influence of upwelling could be different based on location and time. The difference of upwelling duration and intensity (strength) can affect the variability of primary productivity in Indonesian waters. The estimation of primary productivity during the period of January 2000 to December 2007 was conducted using Carbon-based Production Model (CbPM). Sea Surface Temperatures (SST) Anomaly data on the same period was used as parameter to determine the upwelling conditions. The study locations were west coast of Sumatra, south waters of East Java to East Nusa Tenggara, Banda Sea, Gulf of Bone, Maluku Sea and Halmahera Sea. The results showed that in the south of East Java and Banda Sea have upwelling with longer duration (3–4 months) and higher intensity (decrease in temperature reached >2°C below average), the primary productivity was higher than other locations. Halmahera Sea showed the existence of upwelling only at certain time when El Niño occurred, while Gulf of Bone and Maluku Sea showed the occurrence of upwelling during southeast season only with 2–3 months of duration and vary intensity, which shown with the decrease in temperature ranging from 0,5–1,8oC below average. El-Niño and dipole mode in Indonesia waters generally caused longer duration and stronger intensity of upwelling producing more productivity than normal years.Keywords: Upwelling, Primary Productivity, Carbon-based Production Model

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Seasonal Pattern of Wind Induced Upwelling Over Java-Bali Sea Waters and Surrounding Area

Cited by 14 publications

References 1 publication

Analisis Multilayer Variabilitas Upwelling Di Perairan Selatan Jawa

Analisis Multilayer Variabilitas Upwelling Di Perairan Selatan Jawa

Karakteristik Angin Zonal Selama Upwelling Di Perairan Selatan Jawa Pada Kondisi Normal Dan Enso

Influences of Upwelling Duration and Intensity Based on Sea Surface Temperature Anomaly Toward Primary Productivity Variability in Indonesian Waters

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