This seminar is Jointly organised with the HKGES and HKIE GE Division. The speaker is Professor ZHOU Zenghui, Head of Geophysical Exploration Division of Institute of Rock and Soil Mechanics (IRSM), the Chinese Academy of Sciences, Wuhan, China. Professor ZHOU will give a description of the principle of electromagnetic (EM) wave computerised topography (CT) method for subsurface exploration and its applications in geotechnical site investigations and other areas. 

The talk will include:
- Geophysical CT Development History, the Scientific Principle of the EM Wave Method, EM Test Procedure and the Principle of CT Image Process 
- Application Areas such as Mining, Caverns, Underground Revivers, Fault, Facture Zone and Weak Seams 
- The EM Test Equipment 
- Main Results from 11 Case Projects