More accurate study of seismicity effect on Sumatra-Fault for liquefaction potential in Banda Aceh by using cyclic loading mobility data

Abstract

Banda Aceh is a prone city, predictions from earthquake experts with a potential for a tsunami in the return period of 500 years there will still be a large earthquake that threatens development in Aceh, especially Banda Aceh. A great earthquake has occurred in Aceh on December 26, 2004, which destroyed government infrastructures and property and human life in Banda Aceh. The high number of casualties during the natural disaster occurred due to low government preparedness and public understanding of earthquake disasters caused by several earthquake sources surrounding the city of Banda Aceh, such as; Aceh-Sumatra great fault, the subduction of the Indo-Australian plate with the Euro Asia plate which move side by side along the side of Aceh province - Andaman Island. This research will provide important information regarding the orientation of the depth of the strong layer and the distribution (horizon) of the subsoil of the city surface in several densely populated zones and surrounded areas. The study method was carried out by using a cross-section of the sub-surface of the earth’s plate from the coast - transition - land using Surfer software. Quantitative and qualitative analysis results obtained 3D image surface sand shading relief; soft layers, moderately layers and hard layers, each of which the thickness and depth of the soil was used to perform an analysis of the phenomenon of liquefaction potential; soft layers less than 10 kg/cm2 thickness 0.2-3.6 m depth, moderately layers 10-50 kg/cm2 thick 1.0 -7.0 m depth 1.2-10.6 m, hard layers > 120 kg/cm2 thickness 2.0-18.6 m depth 5.0-46.8 m, respectively.