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3-D Resistivity Imaing of a Large Scale Tumulus

대형 고분에서의 3차원 전기비저항 탐사

  • Oh, Hyun-Dok (Buyeo National Research Institute of Cultural Heritage) ;
  • Yi, Myeong-Jong (Korea Institute of Geoscience and Mineral Resources) ;
  • Kim, Jung-Ho (Korea Institute of Geoscience and Mineral Resources) ;
  • Shin, Jong-Woo (National Research Institute of Cultural Heritage)
  • Received : 2011.10.31
  • Accepted : 2011.11.08
  • Published : 2011.11.30

Abstract

To test the applicability of resistivity survey methods for the archaeological prospection of a large-scale tumulus, a three-dimensional resistivity survey was conducted at the $3^{rd}$ tumulus at Bokam-ri, in Naju city, South Korea. Since accurate topographic relief of the tumulus and electrode locations are required to obtain a high resolution image of the subsurface, electrodes were installed after making grids by threads, which is commonly used in the archaeological investigation. In the data acquisition, data were measured using a 2 m electrode spacing with the line spacing of 1 m and each survey line was shifted 1 m to form an effective grid of 1 m ${\times}$ 1 m. Though the 3-D inversion of data, we could obtain the 3-D image of the tumulus, where we could identify the brilliant signature of buried tombs made of stones. The results were compared with the previous excavation results and we could convince that a 3-D resistivity imaging method is very useful to investigate a large-scale tumulus.

Acknowledgement

Grant : 고총고분 물리탐사 연구

Supported by : 국립문화재연구소

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