Open AccessMapping of Coastal Sedimentation using Landsat Satellite Image and Bathymetry Map (Case study: Batu Gong Coastal, Southeast Sulawesi, Indonesia)
Author(s) -
Laode Muhammad Golok Jaya
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/755/1/012021
Subject(s) - bathymetry , sedimentation , sediment , geology , remote sensing , channel (broadcasting) , coral reef , satellite imagery , reef , seabed , oceanography , hydrology (agriculture) , geomorphology , geotechnical engineering , engineering , electrical engineering
Sedimentation in coastal areas poses a threat to the sustainability of coastal ecosystems. Besides damaging coastal ecosystems such as coral reefs, sedimentation also reduces the quality of the beach as a tourist area. This is economically detrimental. This study aims to monitor and map sedimentation in coastal areas through physical interpretation based on Landsat satellite imagery data and bathymetry maps. Landsat 2003 image was used in this study and bathymetry map was coming from geological map. Band intensity is used to magnify the water column. Image processing shows the intensity of each band can be used to interpret land cover, but the blue channel can penetrate the water column deeper than the other channels. The result of the research was ensuring that the sediment would be deposited due to the gravel size and the current speed. Both of 12 cm/sec and 25 cm/sec current speed do not have enough energy to disperse the sediment which consists of gravel with 2 mm in diameter. Since the river discharged the coast continuously and the sediment deposited into the seabed then it would be accumulated. The accumulation of sediment in the study area was interpreted by the thickness of the sediment overlay with the bathymetry map.