Correlation between Resistivity and Ground Penetrating Radar (GPR) Methods in Understanding the Signatures in Detecting Cavities

Southeast Asian Conference on Geophysics

Afiq Saharudin, Muhamad^1 ; Maslinda, Umi^1 ; Hisham, Hazrul^1 ; Taqiuddin, Z.M.^1 ; Nur Amalina, M.K.A.^1 ; Ahmad Nawawi, Nordiana^1 ; Sulaiman, Nabila^1 ; Nordiana, M.M.^1 ; Azwin, I.N.^1

Geophysics Department, School of Physics, 11800 Universiti Sains Malaysia, Penang, Malaysia^1

关键词: Air cavity;    Air-filled cavities;    Ground penetrating radar (GPR);    Malaysia;    Resistivity values;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/62/1/012006/pdf
DOI  :  10.1088/1755-1315/62/1/012006

来源: IOP

【 摘 要 】

The research was conducted using Resistivity and Ground Penetrating Radar (GPR) methods in detecting in-filled cavities and air-filled cavities. The importance of this study is to see the difference in conductivity value of the in-filled and air-filled cavity. The first study location in which the known target is air-cavity located at School of Language, Literacies, and Translation (SoLLAT). The next study location is at Desasiswa Bakti Permai, which the known target is a bunker with both were located at Universiti Sains Malaysia, Penang and the last location is at Gua Musang, Kelantan with suspected in-filled cavity. The result from Gua Musang is compared with both of the results that have been done at Universiti Sains Malaysia. The resistivity value of the first location that indicates the possible tunnel is about 500 Ωm to 800 Ωm and the conductivity value is about 0.0017 S/m. The resistivity value for the second location located at Desasiswa Bakti Permai that indicates the bunker is about 50 Ωm to 250 Ωm and the conductivity value is about 0.1104 S/m. The resistivity value from Gua Musang is about 50 Ωm to 100 Ωm and the conductivity value is about 0.0101 S/m. The velocity of the in-filled cavities is much lower compared with the velocity of the air-filled cavities. Based on the characteristics, Gua Musang area was dominated with in-filled cavities.