Spatial analysis of post tsunami 2004 coastline changes in Lampuuk, Aceh Besar

11th Aceh International Workshop and Expo on Sustainable Tsunami Disaster Recovery

Adela, Iswana^1 ; Setya Nugraha, Gartika^1 ; Irham, Muhammad^2 ; Syahreza, Saumi^3^4

Dept. of Geological Engineering, Faculty of Engineering, Syiah Kuala University, Banda Aceh

23111, Indonesia^1

Faculty of Marine and Fisheries, Syiah Kuala University, Banda Aceh

23111, Indonesia^2

Physics Department of Mathematics and Science, Faculty of Syiah, Kuala University, Banda Aceh

23111, Indonesia^3

Tsunami and Disaster Mitigation Research Center (TDMRC), Syiah Kuala University, Banda Aceh, Indonesia^4

关键词: Coastal plain;    Coastline changes;    Multitemporal satellite imagery;    Sedimentation process;    Shoreline change;    Spatial analysis;    Tsunami disaster;    Western region;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/273/1/012046/pdf
DOI  :  10.1088/1755-1315/273/1/012046

来源: IOP

【 摘 要 】

Based on the geological records, the tsunami in 2004 has resulted in coastline shifts along the west coast of Aceh. One of the beaches in the western region that undergoes a major coastline change is Lampuuk beach. This study aims to determine the shoreline changes occurring at Lampuuk beach. The study of coastline changes was done by utilizing remote sensing using satellite imagery and geographic information system. Geographic information systems were used to analyze spatial data obtained from multitemporal satellite imagery before and after the tsunami disaster. The results show that coastline changes occur very significantly during the 2004 tsunami and persisted until 2005, but after 2010 the coastline was back to normal. During 2001-2005 there was a reduction in coastal plains caused by the 2004 tsunami waves. In 2005-2018 the sedimentation process at Lampuuk Beach was more dominant, assisting to adjust the shape of the coastal profile as before the 2004 tsunami. The results also show that the Lampuuk area was more sedimentary than erosion.