Abstract
This paper presents an application of satellite remote sensing techniques to detect and to<strong><em> </em></strong>analyze the spatial changes as well as quantify the shoreline change in Rokan estuary, Riau Province, Indonesia. Coastal zone of Rokan estuary, a place through which Rokan River flows into Malacca Strait is dynamically changed because of the hydrodynamic nature and high sediment transport in downstream of Rokan River. By integrating modern techniques of remote sensing and GIS (Geographic Information System), the rates of shoreline change would be easily and quickly determined for a regional area. Landsat satellite images were used with a combination of histogram thresholding and band ratio method for shoreline change detection for last 14 years from 2000 to 2014. The shoreline data then were adjusted for serving as an input for GIS tool to estimate the erosion and deposition rates. The statistical method called as LRR (Linear Regression Rate) in DSAS (Digital Shoreline Analysis System) was used in this study. The results of this study present shoreline changes map of Rokan estuary for last 14 years. Quantitatively, the shoreline of Rokan estuary is dynamically changed over a time because accretion rate is very high. The accretion rates in Halang, Barkey, and Serusai Island within 14 years are 67 m/yr, 53 m/yr, and 114 m/yr respectively.This occurs because
Highlights
Coastal zone and its environmental management require the information about shorelines and their changes
This paper presents an application of satellite remote sensing techniques to detect and to analyze the spatial changes as well as quantify the shoreline change in Rokan estuary, Riau Province, Indonesia
Coastal zone of Rokan estuary, a place through which Rokan River flows into Malacca Strait is dynamically changed because of the hydrodynamic nature and high sediment transport in downstream of Rokan River
Summary
Coastal zone and its environmental management require the information about shorelines and their changes. There are several approaches to calculate the rates of shoreline change such as numerical models and remote sensing technique. The rapid development of remote sensing and GIS technology lead to develop some applications more powerfull for shoreline change analysis. Besides some traditional computation from modeling, the integrated remote sensing and GIS support effective results to coastal engineers and managers. By integrating modern techniques of remote sensing and GIS (Geographic Information System), the rates of shoreline change would be and quickly determined for a regional area. By the input data from extracted shoreline information from satellite image, GIS tool can be used to calculate long-term
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