Abstract
The research has been conducted to analyze the susceptibility of seawater intrusion based on resistivity values in Banda Aceh city. In geomorphology, the mainland Banda Aceh extend to southeast (around Krueng Aceh River) in Aceh Besar district (western and eastern coastal areas) and Pidie district. This research aimed to determine the lithology of susceptibility of seawater intrusion areas by using 2D resistivity Wenner-Schlumberger configuration. This method is also used to interpret the subsurface layer structure of susceptibility of seawater intrusion in Banda Aceh with five measurement lines. The results in this research showed that the resistivity value of susceptibility of seawater intrusion in the research area is below 1.45 Ωm with intrusion depth varies from 0 to 34,1 meters. Based on the analysis and interpretation data, the subsurface structure of the region composed of clayey sand, sandy clay and clay that spreads laterally. The deployment of seawater intrusion occurs at the northern part of Banda Aceh directly related to the coastal area.
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