Silica Sand Identification using ALOS PALSAR Full Polarimetry on The Northern Coastline of Rupat Island, Indonesia

Husnul Kausarian (1), Josaphat Tetuko Sri Sumantyo (2), Hiroaki Kuze (3), Detri Karya (4), Good Fried Panggabean (5)
(1) 1. Chiba University 2. Universitas Islam Riau
(2) Chiba University
(3) Chiba University
(4) Universitas Islam Riau
(5) Chiba university
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How to cite (IJASEIT) :
Kausarian, Husnul, et al. “Silica Sand Identification Using ALOS PALSAR Full Polarimetry on The Northern Coastline of Rupat Island, Indonesia”. International Journal on Advanced Science, Engineering and Information Technology, vol. 6, no. 5, Oct. 2016, pp. 568-73, doi:10.18517/ijaseit.6.5.920.
Silica sand is one of the minerals which relatively abundant in Indonesia. One of the areas with abundant of silica sand distribution is the northern coastline of Rupat Island, Bengkalis district, Riau province, Indonesia. The distribution of silica sand in this island identified only on the northern coastline in this island. Some selected sample of silica sand was measured to get the percentage of silica sand mineral’s content using X-Ray Fluorescence (XRF). Two adjacent scenes of ALOS PALSAR full-polarimetry were used. The physical properties of silica sand sample such as dielectric constant were measured using dielectric probe kit in the frequency range from 0.3 to 3.0 GHz and used for calculating the backscattering coefficient and the difference characteristics of silica sand with another object. Freeman-Durdeen and Yamaguchi techniques were used to get the scattering decomposition of physical scattering from the incoherent object model based. Surface scattering is the clearest of Scattering decomposition to show silica sand identification compares with other decompositions. From surface scattering, the backscattering coefficient value of silica sand was calculated starting from -59 dB until -52 dB. These values were given by the surface roughness condition, where the roughness is slightly rough planar. The flat condition supported by the grain size of silica sand particles that have almost the same size and shape, that were conducted by using microscopic photograph testing.

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