GPR for geotechnical engineering

The special issue published here is a response to the call for the development of novel geophysical techniques particularly applicable in geotechnical engineering contexts. It consists of seven papers selected from a collection presented to the 14th International Conference on Ground Penetrating Radar, which indicate that new and innovative geophysical applications in geotechnical engineering have emerged, and that these innovations may be potentially useful for the planning, implementation and maintenance of infrastructure systems. These research papers can be divided into two groups: (1) improvement of ground penetrating radar (GPR) techniques and (2) GPR investigations associated with infrastructure and geotechnical engineering.