Analisa Vektor Pergeseran Horizontal Stasiun GPS Ujong Muloh (UMLH) Pulau Sumatera Tanggal 27 Maret - 25 April 2012

Pamungkas, Sudigdyo Suryo (2018) Analisa Vektor Pergeseran Horizontal Stasiun GPS Ujong Muloh (UMLH) Pulau Sumatera Tanggal 27 Maret - 25 April 2012. Other thesis, Universitas Sebelas Maret.

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Abstract

Sumatera island is an area that has high tectonic activity. This is because the island of Sumatra is located near in two major plates of the world, the Indo-Australian plate and the Eurasia plate. The subduction zone, causes Sumatera island to deform from time to time. The deformation of the Sumatera Island can be observed by continuously recording coordinates using the GPS Station. Continous-GPS (C-GPS) in Sumatera Island is named Sumatran GPS Array (SuGAr), one of them named UMLH. The UMLH GPS station used to observe the displacement in the Aceh City of Sumatra Island, is located in Ujung Muloh. The changes of GPS data coordinate recording can represent the deformation pattern that occurred on Sumatra Island. On April 11, 2012 according to USGS data there has been an earthquake in the city of Aceh with Magnitude 8.6 at coordinates 2,433°N, 93,072°E. The purpose of this research is to analyze the horizontal displacement due to the occurrence of the earthquake. Data processing is done using software GAMIT/GLOBK. The magnitude of the displacement of Sumatra Island before the earthquake, during the earthquake, and after the quake on component X respectively: 0.04 mm/day, 111.12 mm/day, and 1.42 mm/day. While on component Y respectively: 0.03 mm/day, 71.66 mm/day, and 1.6 mm/day. The direction of displacement is 253.8° towards Southwest with the assumption that 0° in the North direction.

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