INVESTIGATION OF TOTAL SUSPENDED MATTER IN PORONG REGION USING AQUA MODIS SATELLITE DATA AND NUMERICAL MODEL
Total suspended mater (TSM) in Porong region has been investigated. TSM of Porong region was one of important parameter to be observed according to mud volcano that occurred in 28 May 2006. Location of this research was Porong region between Longitude 112040’ E - 113010’ E and latitude 7020’ S - 7045’ S. The research was carried out using MODIS-Aqua satellite 250 m resolution dataset received in 2006, 2007 and 2008. band 1 reflectance images were geo-corrected, land and cloud areas were masked out. TSM concentration derived from MODIS-Aqua satellite by applying algorithm suggested by Kutser (2007). Surface water samples were obtained from 16 location of Porong region in June 15, 2007. and filtered for the determination of Total Suspended Matter (TSM). TSM concentration (mg/l) was determined gravimetrically in Laboratory.Sediment transport in
coastal water calculated based on current pattern derived from hydrodynamic model. The equation used in this calculation was horizontal 2 dimension diffusion advection. Result of
this research show that TSM of Porong region is vary in the range of 22 – 137 mg/l, and affected by rainfall according to monsoon. During northwest monsoon TSM was higher than it in southeast monsoon. Generally TSM in Porong region had not yet significantly increase caused by mud volcano as found in processed satellite data in 2006 before mud volcano occurs, 2007 and 2008 after that event. Current pattern of Porong region is continuously change the direction according to tide in this area. During ebb condition, current flow downstream, while during flood condition is upstream. Generally component current pattern of Porong region flow southward with velocity up to 1.0 m/s, while velocity of current in coastal region is less than that or about 0.4 m/s. Distribution of sediment affected by tidal current. During flood condition sediment transport is blocked in mouth of Porong river. During ebb condition sediment transport get maximum velocity and distribution.
B1802287 | Koleksi Digital | Archivelago Indonesia Marine Library - Perpustakaan Kementerian Kelautan dan Perikanan | Available |
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