PEMODELAN PETA POTENSI LAND SUBSIDENCE DI WILAYAH PESISIR PULAU PAPUA

• Main Author: Gibran Fadilla, Muhammad
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/67151
• Institution: Institut Teknologi Bandung

Land subsidence is very common in areas composed of soft soil. Papua Island, where most of the coastal areas are soft land areas, makes it an area that has the potential for land subsidence. Therefore, it is necessary to conduct research on the modeling of land subsidence potential maps that occur in the coastal areas of Papua Island. Modeling the potential for land subsidence map in the coastal areas of Papua Island can be done using soft soil area data, peatland conversion area data, peat land use area data, oil and gas work area data, and built environment area data. The resulting model will be compared with the value of the potential land subsidence with the value from the BIG CORS data and after that it will be validated based on the tidal flood that occurred on Papua Island. From the modeling result, it is found that the potential value of land subsidence that occurs in Papua Island, Biak Numfor Regency and Yahukimo Regency has the smallest land subsidence potential. Meanwhile, Sorong City, Teluk Bintuni Regency, Sorong Regency, Raja Ampat Regency, Merauke Regency, and Boven Digoel Regency have the largest land subsidence potential. The value of potential land subsidence after being compared with the value of the rate of decline from CORS BIG data, obtained a difference in value of 2.844-3.844 cm/year. This difference is caused by CORS which is already designed for a stable place. From the validation, it was found that in Merauke Regency and Mimika Regency there was a match between the tidal flood that occurred and the potential land subsidence that had been generated. Meanwhile, in Asmat Regency, Fakfak Regency, Jayapura City, and Sorong City, there is no match between the tidal flood that occurred and the potential land subsidence that has been generated.