VARIABILITY OF CHLOROPHYLL-A DISTRIBUTION AROUND BELITUNG ISLAND WATERS OBSERVED BY AQUA-MODIS SATELLITE DATA

ulung jantama wisha, Hanah Khoirunnisa

Abstract


Belitung Island has a strategic geographical location, which is directly bordered with Sumatera and Kalimantan also Karimata and Malacca Straits. Those conditions make the waters productivity being high due to the support from the biogeochemical cycle, nutrient runoff, and upwelling. This study aims to determine the seasonal variability of chlorophyll-a (Chl-a) around Belitung waters. The method used in this study was spatial analysis with IDW (inverse distance weighted) to interpolate the Chl-a surface distribution. Sea Surface Temperature (SST) acquired from Aqua-MODIS were retrieved from NASA (National Aeronautics and Space Administration) and wind data were obtained from ECMWF (European Centre for Medium-Range Weather Forecasts), data were analyzed statistically and spatially. The Chl-a concentration in the northeast monsoon ranged 0.38-3.5 mg.m-3, in the southwest monsoon ranged 0.15-18.7 mg.m-3, and in the transitional season ranged 0.29-9.04 mg.m-3. The Chl-a concentration during southwest and 1st transitional monsoons were higher due to the maximum sunlight intensity stimulating photosynthesis of autotroph biota. The condition of SST is indicating the upwelling event that involves wind-driven motion of dense, cooler, and usually nutrient-rich water towards the ocean surface. Seasonal SST variability ranged 22.6-28.3oC, 27.3-32.1oC, 30.7-32.3oC, and  29.1-32.8oC during northeast, 1st transitional, southwest, and 2nd transitional monsoons respectively. The existence of ENSO (El-Nino Southern Oscillation) contributes to enhance the Chl-a concentration. During ENSO years, the Chl-a concentration was higher than non-ENSO years due to the great impact of ENSO inducing upwelling and higher nutrient availability. Chl-a and SST conditions can be used to predict fishing ground and upwelling area. 


Keywords


chlorophyll-a variability, monsoon, Aqua-MODIS, Belitung Island

Full Text:

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References


Belkin, I. M., & O’Reilly, J. E. (2009). An algorithm for oceanic front detection in chlorophyll and SST satellite imagery. Journal of Marine Systems. https://doi.org/10.1016/j.jmarsys.2008.11.018

Chow, C. E. T., Sachdeva, R., Cram, J. A., Steele, J. A., Needham, D. M., Patel, A., … Fuhrman, J. A. (2013). Temporal variability and coherence of euphotic zone bacterial communities over a decade in the Southern California Bight. ISME Journal. https://doi.org/10.1038/ismej.2013.122

ECMWF. (2017). Advancing global NWP through international collaboration. Retrieved from https://www.ecmwf.int/ Fieldman, G., C. (2017). Ocean Color Web. Retrieved July 20, 2003, from https://oceancolor.gsfc.nasa.gov/

Grémillet, D., Lewis, S., Drapeau, L., Van Der Lingen, C. D., Huggett, J. A., Coetzee, J. C., … Ryan, P. G. (2008). Spatial match-mismatch in the Benguela upwelling zone: Should we expect chlorophyll and sea-surface temperature to predict marine predator distributions? Journal of Applied Ecology. https://doi.org/10.1111/j.1365-2664.2007.01447.x

Hu, C., Lee, Z., & Franz, B. (2012). Chlorophyll a algorithms for oligotrophic oceans: A novel approach based on three-band reflectance difference. Journal of Geophysical Research: Oceans. https://doi.org/10.1029/2011JC007395

Kilpatrick, K. A., Podestá, G., Walsh, S., Williams, E., Halliwell, V., Szczodrak, M., … Evans, R. (2015). A decade of sea surface temperature from MODIS. Remote Sensing of Environment. https://doi.org/10.1016/j.rse.2015.04.023

McGillicuddy, D. J., Anderson, L. A., Bates, N. R., Bibby, T., Buesseler, K. O., Carlson, C. A., … Steinberg, D. K. (2007). Eddy/Wind interactions stimulate extraordinary mid-ocean plankton blooms. Science. https://doi.org/10.1126/science.1136256

Nababan, B., & Simamora, K. (2012). Variabilitas konsentrasi klorofil-a dan suhu permukaan laut di perairan Natuna. Jurnal Ilmu Dan Teknologi Kelautan Tropis. https://doi.org/10.29244/jitkt.v4i1.7815

PODAAC. (2017). Physical Oceanography Distributed Active Archive Center. Retrieved from https://podaac.jpl.nasa.gov/

Putri, G. A., Zainuri, M., & Priyono, B. (2016). Sebaran Ortofosfat dan Klorofil-a di Perairan Selat Karimata. Journal of Oceanography, 5(1), 44–51.

Radiarta, I. N., & Saitoh, S. I. (2008). Satellite-derived measurements of spatial and temporal chlorophylla variability in Funka Bay, southwestern Hokkaido, Japan. Estuarine, Coastal and Shelf Science. https://doi.org/10.1016/j.ecss.2008.04.017

Rustam, A., & Prabawa, F. Y. (2015). Kualitas perairan di pantai punai dan pantai tambak kabupaten belitung timur. Segara, 11(1), 75–84.

Sediadi, A. (2004). Effek upwelling terhadap kelimpahan dan distribusi fitoplankton di perairan laut banda dan sekitarnya. Makara, Sains, 8(2), 43–51. https://doi.org/https://doi.org/10.7454/mss.v8i2.409

Simanjuntak, M. (2009). Hubungan Faktor Lingkungan Kimia, Fisika Terhadap Distribusi Plankton Di Perairan Belitung Timur, Bangka Belitung. Jurnal Perikanan, 11(1), 31–45.

Supari, & Setiawan, N. (2013). Rainfall Variability Over Bangka Belitung Island Based on Validated TRMM Product. Jurnal Meteorologi Dan Geofisika, 14(1), 9–17. https://doi.org/http://dx.doi.org/10.31172/jmg.v14i1. 140

Villanoy, C., Cabrera, O., Yniguez, A., Camoying, M., de Guzman, A., David, L., & Flament, P. (2011). Monsoon-Driven Coastal Upwelling Off Zamboanga Peninsula, Philippines. Oceanography, 24(1), 156–165. https://doi.org/10.5670/oceanog.2011.12

Westphal, H., Beuck, L., Braun, S., Freiwald, A., Hanebuth, T., Hetzinger, S., … Wienberg, C. (2014). Phaeton - Paleoceanographic and paleoclimatic record on the Mauritanian Shelf - Cruise No. MSM16/3 - October 13 - November 20, 2010 - Bremerhaven (Germany) - Mindelo (Cap Verde). Maria S. Merian-Berichte. https://doi.org/10.2312/cr

Wiggert, J. D., Vialard, J., & Behrenfeld, M. J. (2009). Basin-wide modification of dynamical and biogeochemical processes by the positive phase of the Indian Ocean Dipole during the SeaWiFS Era. In Geophysical Monograph Series (pp. 385–407). https://doi.org/10.1029/2008GM000776

Wisha, U., J., Yusuf, M., Maslukah, L. (2016). Kelimpahan fitoplankton dan konsentrasi tss sebagai indikator penentu kondisi perairan muara sungai porong. Jurnal Kelaiutan Dan Teknologi, 9(2), 122–129. https://doi.org/http://dx.doi.org/10.21107/jk.v9i2.12 98

Wisha, U. J., & Maslukah, L. (2017). Nutrient Condition of Kampar Big River Estuary: Distribution of N and P Concentrations Drifted by Tidal Bore ”Bono”. Ilmu Kelautan: Indonesian Journal of Marine Sciences, 22(3), 37–45. https://doi.org/10.14710/ik.ijms.22.3.137-146




DOI: http://dx.doi.org/10.24895/MIG.2018.20-2.634

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