Preliminary study of land cover/land use and geomorphic change of the near shoreline of Aceh Jaya Regency: a multi-temporal and multi-image approach

Abstract

Land cover/land-use change in Aceh Jaya Regency is greatly affected by the community and local government's increasing activities on land. The continuing development may create a problem due to progressing land use and geomorphic changes along the coastal area since the 2004 tsunami. To examine the land cover/land use and the extent of the geomorphic change to the coastline of Aceh Jaya Regency, a detailed study on the historical shoreline positions and land cover/land-use change was carried out. This preliminary study tried to analyze land use/land cover and geomorphic change from 2004 until 2019 along the coastal area of Aceh Jaya in Aceh, Indonesia, by utilizing multi-temporal and multi-image data. Results show that land use/land cover has considerably changed, primarily to vegetation, open land, and a water body that varied in total area during the year of observation. Coastline changed markedly since 2004 with abrasion reaching up to 436.38 meters from the original coastline, and the loss of land area up to 457.90 hectares, and 5.78 hectares of accretion was added. The longest distance of land that has disappeared from the original shoreline was recorded 436.38 meters from the mainland.