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Access status: Open Access ,
2D Electrical Resistivity Tomography interpretation ambiguity - example of field studies supported with analogue and numerical modelling
(Wydawnictwa AGH, 2013) Bania, Grzegorz; Ćwiklik, Michał
Single Electrical Resistivity Tomography (ERT) survey was carried out in the Manor and Park Complex in Nowa Huta (Krakow Branice, Poland). It was applied at a small distance and parallel to the longer wall of a monumental building containing an empty 3 m deep basement. Analogue modelling was performed in order to recreate the field study at the proper scale. The laboratory set-up consisted of a water tank where electrodes were mounted to the particular plate, which rested on water surface. The basement model was made out of a non-conducting material. The default and robust inversions were tested and these variants were also considered with the use of numerical modelling. Laboratory experiments have confirmed that zones visible in the interpreted field section are caused by the influence of the building cellar located next to the survey line. Zones of this kind are additionally disturbed by the local geological structure. The experiment has pointed out, among others, that as the distance between the survey line and the underground body increases, the inversion results are still burdened by an object influence. Thus, similar situations can be verified with the use of analogue modelling presented in this paper or 3D numerical one.
Access status: Open Access ,
Integration of MASW and ERT methods for site characterisation: a case study from Czernichów (Southern Poland)
(Wydawnictwa AGH, 2026) Cichostępski, Kamil; Bania, Grzegorz; Borecka, Aleksandra
The paper presents an integrated use of multichannel analysis of surface waves (MASW) and electrical resistivity tomography (ERT) to characterise the physical properties of near-surface materials, identify subsurface structures, and estimate the depth to bedrock in a planned construction area near Czernichów, close to Krakow (southern Poland). The study shows that integrating MASW and ERT provides a cost-effective and complementary approach to subsurface characterisation, delivering more reliable and less ambiguous interpretations than when the methods are applied independently, thereby reducing the need for expensive and invasive in situ geotechnical investigations. Particular emphasis is also placed on the methodological aspects of both methods. The study site is located on an alluvial plain composed of alluvial soils, sands, sand–gravel mixtures, and silty clays overlying limestone bedrock. Geophysical data were collected along five profiles. The resulting shear wave velocity models and the inverse model resistivity sections show good agreement with borehole data. The study area is characterised by a wide range of physical parameters derived from both methods. The MASW survey enabled recognition of the subsurface down to the bedrock, revealing four seismic layers differing in S-wave velocity. Nevertheless, the MASW inversion did not provide reliable estimates of the limestone S-wave velocity, although it successfully delineated its depth and morphology. The ERT survey identified three geoelectrical layers and proved to be more effective in resolving shallow geological structure, particularly in identifying the boundaries between alluvial soils and sand–gravel mixtures, whereas the depth and morphology of the limestone bedrock were constrained primarily by MASW.
Access status: Open Access ,
Geofizyczne odwzorowanie melanży w płytkich strefach pasm orogenicznych : przykład z pienińskiego pasa skałkowego
(Wydawnictwa AGH, 2024) Golonka, Jan; Dec, Jerzy; Mościcki, Włodzimierz Jerzy; Porzucek, Sławomir; Waśkowska, Anna; Bania, Grzegorz; Łój, Monika; Matwij, Wojciech ; Chowaniec, Józef; Golonka, Jan; Łój, Monika; Waśkowska, Anna
Wydział Geologii, Geofizyki i Ochrony Środowiska

Bania, Grzegorz

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