#TITLE_ALTERNATIVE#

• Main Author: FATHIN RIZAL (NIM : 15112050), PATIH
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/29913
• Institution: Institut Teknologi Bandung

<p align=justify>Sidoarjo mud disaster occurs the first time on 29 May 2006. The mud remove the water, gas and mud from the basement at a drilling location of PT. Lapindo Brantas, Sidoarjo regency, East Java. As a result of these bursts, occurring subsidence in the area that the main cause is the loss of volume that is under the surface due to sludge coming out. Therefore, this research was conducted to determine the magnitude of land subsidence and create a model of ground movement after 9 years after the mudflow in Sidoarjo for evaluation and mitigation. <br /> <br /> <br /> <br /> Observations using GPS episodic conducted to determine deformation that occur from year to year. GPS survei conducted several points using dual frequency geodetic type receiver. These points are the same point of each observation. With longer observation varies between 3-8 hours. The data is then processed using Bernese 5.2 taking into account the biases that exist. Then based on the data processing, modeling deformation process is carried out based on the data in previous years. At the point JLSR deformation in 2006-2007 amounted -0.6960 m/year, in the year 2007-2010 amounted -0.1385 m/year, and the year 2010-2016 amounted -0.0814 m/year. Then at some point BT16 deformation in the year 2007-2010 amounted -0.0272 m/year and in 2010-2016 amounted -0.0221 m/year. At the point of WNT deformation in the year 2007-2010 amounted -0.2000 m/year and in 2010-2016 amounted -0.0183 m/year.<p align=justify>