Resistivity and Chargeability Signatures of Tsunami Deposits at Aceh Besar and Banda Aceh Coastal Area, Indonesia

Abstract

The study was conducted at the coastal area of Aceh Besar and Banda Aceh using 2-D resistivity and IP methods to investigate the changes/response of resistivity and chargeability toward sediment. The study is aimed to identify the post-, pre-and tsunami sediment deposits. The results are validated with hand auger performed on the study line. Generally, the study identified that the coastal sediments of Aceh Besar and Banda Aceh consist of clay/silty clay/sand/silty sand. Based on the results, the sediments are categorized into three layers; the top layer (post-tsunami sediment), tsunami sediments and pre-tsunami sediments. The tsunami sediment consists of a mix of sand or clay or silty clay or silty sand. Each layer was represented by different resistivity and chargeability values depending on the sediment types.

Identification of Tsunami Deposit at Meulaboh, Aceh (Indonesia) Using Ground Penetrating Radar (Gpr)

“…The post-2004 tsunami deposits have medium to coarser grain size deposits. The existing research regarding the post-tsunami sediment deposits in Aceh province carried out by implementing resistivity and chargeability data also showed the same pattern [24].…”

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