3 November 2010 TSS monitoring by using THEOS satellite imagery over Penang Island, Malaysia
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Traditional sampling method for marine environment monitoring is time consuming and needs a high cost to carry out the survey. Remote sensing data have been widely used for monitoring marine environment and remote sensing is an efficient method to overcome the problem. This paper assesses the use of multispectral satellite imagery from THEOS for mapping spatial distribution of TSS in a coastal zone. The aim of this study is to evaluate the feasibility of using THEOS satellite image for the water quality studies. Simultaneous in situ measurements of total suspended solids (TSS) concentration and acquisition of satellite imageries were carried out over Penang Island, Malaysia. The locations of in situ sample were determined using a handheld Global Positioning System (GPS). The algorithm used is based on the reflectance model which is a function of the inherent optical properties of water and this in turn can be related to the concentration of its constituents. Multiple regression algorithm was employed using the multi-band data for retrieval of the water constituent. Digital numbers corresponding to the water sample locations were determined for algorithm calibration. Various types of algorithms were tested; R and RMS value were noted. The proposed algorithm is considered superior based on the values of the correlation coefficient and root-mean-square The algorithm was used to generate the TSS map for the Penang Island, Malaysia. Geometric correction was performed to the TSS map and colour-coded for visual interpretation. This study shows the potential application of THEOS satellite images for TSS mapping using the proposed multispectral algorithm.
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H. S. Lim, M. Z. MatJafri, K. Abdullah, "TSS monitoring by using THEOS satellite imagery over Penang Island, Malaysia", Proc. SPIE 7858, Remote Sensing of the Coastal Ocean, Land, and Atmosphere Environment, 785804 (3 November 2010); doi: 10.1117/12.869488; https://doi.org/10.1117/12.869488

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