Mapping of sedimentation distribution at Citarum River Estuary, Muara Gembong District, Bekasi Regency
Paper Details
Mapping of sedimentation distribution at Citarum River Estuary, Muara Gembong District, Bekasi Regency
Abstract
Based on the measurement result of total sediment flowing from Citarum River into the sea, which is 1.79442×106 tons/year, the sedimentation around Citarum river estuary is caused by large supply of sediment from the Citarum River. The sedimentation has created additional sedimentation area. Research on the addition of sedimentation area needs to be conducted to discover its potentials in the future. The purpose of this study is to analyze the addition of sedimentation area around Citarum river estuary using satellite remote sensing. This research was conducted around Citarum river estuary, Muara Gembong District, Bekasi Regency, Indonesia in 2014. The data collection was conducted using field observations and processing of satellite image data. Based on the processing result of satellite image data, sedimentation caused 1,060.63ha additional sedimentation area in 2000 and 3,828.26ha in 2014. The addition of sedimentation area during 2000-2014 was 2,767.63ha. The large addition of sedimentation area during 2000-2014 was due to the factor of increasing erosion on the watershed caused by the conversion of the land into industrial, agricultural land, and residential areas. The tendency of sedimentation distribution to move eastward indicates that, when there is large supply of sediment from Citarum River, the ocean current moves eastward. This condition occurs during rainy season, when the sediment discharge is much greater than during dry season and the ocean currents moves eastward.
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