A paper on the geological application of muon tomography based on high-resolution muographic measurements has been published in Scientific Reports. The authors are László Balázs, Gergely Surányi, Gergő Hamar, and Dezső Varga from the High-Energy Geophysics Research Group.
Using high-resolution, portable muograph equipment developed by the High Energy Experimental Particle and Heavy Ion Physics Department of HUN-REN Wigner, a series of measurements has been carried out from the Királylaki-tunnel located under Hármashatár Hill that is unique internationally in terms of both the number and quality of measurements. The resolution and quality of the measurement series enabled the reconstruction of the density distribution of the mountain with high spatial resolution (approx. 1 m) in a thickness of approx. 100 m above the tunnel. The reconstructed image clearly shows the fracture system (fault system) created by tectonic movements in the Buda Hill area and the associated cavities with relatively sharp contours. The revealed internal structure, which is almost X-ray-like, and the directions of the cracks fit well with the assumptions made by geologists, which could have been formed in the rock stress field created by tectonic movements. The fracture system identified by tomography also fits well with the observations made by the builders of the Királylaki tunnel.
