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| THE STUDY AND APPLICATION OF THE GROUND PENETRATION RADAR TO THE FORWARD MODELING OF PERMAFROST AREA |
| HU Jun1, YU Qi-hao1, YOU Yan-hui1, QIAN Jin2 |
1. State Key Laboratory of Frozen Soil Engineering, CAREERI, CAS, Lanzhou 730000, China;
2. Sichuan Communication Surveying & Design Institute, Chengdu 610017, China |
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Abstract Based on an analysis of the applied condition of Ground-Penetrating Radar in permafrost areas in combination with the forward modeling and practical examples, the authors conducted researches on the effectiveness of applying the ground penetrating radar to surveying the distribution, burial depth, storage situation of the thick layer subsurface ice and types of the permafrost in the permafrost area. The results show that remarkable difference in the permittivity exists between the thick layer subsurface ice and the surrounding geological bodies, resulting in the difference of phase characteristics, amplitudes, reflected waves and reflected wave groups of radar waves. The ground-penetrating radar is thus effective in surveying different characteristics of the thick layer subsurface ices. As for the ice-poor permafrost and ice-bearing permafrost, the ground-penetrating radar can also effectively distinguish various permafrost situations in combination with drilling exploration and some other exploration methods due to the difference existent in the storage situation and the distribution of ice crystals in the permafrost layer.
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Received: 19 June 2011
Published: 10 June 2012
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