Wind-Driven Coastal Upwelling in the Southern Coast of Yogyakarta

Faizal Rachman(1*), Ratih Ida Adharini(2), Riza Yuliratno Setiawan(3), Indun Dewi Puspita(4), Endy Triyannanto(5)

(1) Department of Fisheries, Faculty of Agriculture, Universitas Gadjah Mada. Yogyakarta
(2) Department of Fisheries, Faculty of Agriculture, Universitas Gadjah Mada. Yogyakarta
(3) Department of Fisheries, Faculty of Agriculture, Universitas Gadjah Mada. Yogyakarta
(4) Department of Fisheries, Faculty of Agriculture, Universitas Gadjah Mada. Yogyakarta
(5) Department of Animal Products Technology, Faculty of Animal Science, Universitas Gadjah Mada, Yogyakarta
(*) Corresponding Author


Satellite measurement provides synoptic view of sea surface wind and can be used to study variability of coastal upwelling. Here we analyzed data of 12 years of satellite-derived sea surface wind, sea surface temperature (SST), and sea surface chlorophyll-a (Chl-a) to examine the spatial and temporal distributions of coastal upwelling off the Yogyakarta waters. Results show that upwelling occurs during the Southeast Monsoon (SEM) season. During this season, the Yogyakarta waters are dominated by strong wind speed (~7 m/s) and SST cooling (25 °C). Whereas during the Northwest Monsoon (NWM) season the low wind speed (<4 m/s) no longer favor upwelling and SST cooling. We suggest that as the Yogyakarta coastline is oriented east-west, northwesterly winds result in downwelling condition at the coast, while southeasterly winds lead to the offshore Ekman transport of surface water and subsequent upwelling.


Chlorophyll-a bloom; Yogyakarta waters; coastal upwelling

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Crossland, A.C., A.S. Sitorus & H.A. Chandra. 2010. Discovery of an important site for sanderling calidris alba on the south coast of java. Stilt. 57: 3-4.

Figa-Saldaña, J.J., W. Wilson., E. Attema., R.V. Gelsthorpe., M.R. Drinkwater & A. Stoffelen. 2002. The advanced scatterometer (ascat) on the meteorological operational (metop) platform: A follow on for european wind scatterometers. Canadian Journal of Remote Sensing. 28 (3): 404-412.

Hu, C., Z. Lee & B. Franz. 2012. Chlorophyll-a algorithms for oligotrophic oceans: A novel approach based on three-band reflectance difference. J. of Geophysics Research. 117: 1-25. doi: 10.1029/2011jc007395.

Iskandar, I., S.A. Rao & T. Tozuka. 2009. Chlorophyll-a bloom along the southern coasts of Java and Sumatra during 2006. International Journal of Remote Sensing. 30 (3): 663-671.

Ricciardulli, L. & F.J. Wentz. 2015. a scatterometer geophysical model function for climate-quality winds: QuikSCAT Ku-2011. J. of Atmospheric and Oceanic Technology. 32: 1829-1846.

Taufiqurrahman, I., A.M. Tampubolon., H. Subekti & H.Z. Ulya. 2010. Pantai Trisik Yogyakarta: another internationally important site for sanderling Calidris alba in Indonesia. Stilt. 58: 57-62.

Varela, R., F. Santos., M. Gómez-Gesteira., I. Álvarez., X. Costoya & J.M. Días. 2016. Influence of Coastal Upwelling on SST Trends along the South Coast of Java. PLoS ONE. 11 (9): 1-14. doi:10.1371/journal.pone.0162122


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Jurnal Perikanan Universitas Gadjah Mada (print ISSN 0853-6384; online ISSN 2502-5066) is published by Department of Fisheries, Universitas Gadjah Mada in collaboration with Semnaskan UGM (Seminar Nasional Tahunan Hasil Perikanan dan Kelautan) and ISMFR (International Symposium on Marine and Fisheries Research).


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