D.E. Edemsky1, I.V. Prokopovich2

1,2 Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation of RAS (Moscow, Troitsk, Russia)
1 deedemsky@gmail.com; 2 prokop@izmiran.ru

The work is devoted to the study of active faults associated with natural processes, such as surface deformations, earthquakes, volcanic eruptions, as well as landslides (not always seismogenic), subsidence (by different genesis) and frozen-thermokarst phenomena, hydrogeological changes, anomalous erosion and abrasion and accumulative manifestations. The main goal of the research is to understand the ability to localize and assess important characteristics of active faults, including: their exact location; magnitude and age of displacements; orientation and geometry in space; angle of incidence; dimensions of the deformation zone, etc. The article presents GPR profiles obtained at five sites, analyzes the main identifying features of faults, and also provides a list of fault line localization attributes, showing details of the geometry of near-surface faults that were not obvious during surface mapping. We have demonstrated which attributes of seismic and tectonic faults better reflect their structural features and their geometry. In this study, we used Loza-V GPR with antenna systems whose central radiation frequency is 50 and 150 MHz. GPR profiles were passed in accordance with the basic principle of studying active faults, which is based, first of all, on tracing the reference geomorphological levels of the Late Pleistocene-Holocene age and their constituent sediments. Profiles using a set of 50 MHz antennas gave excellent results of deformation zones at depths of up to 45 m in the area of Teriberka, Kola Peninsula. At the same time, the 150 MHz antenna array provided a more detailed analysis of shallow subsurface deformation of geological structures and the fault itself, including stratigraphic structures, dip angle and direction of the fault plane. An analysis was carried out the applicability of certain fault attributes for GPR profiles at test sites in the southern regions of the country and in the Arctic region.

Edemsky D.E., Prokopovich I.V. Application of GPR in identifying fault zones Electromagnetic waves and electronic systems. 2024. V. 29. № 5. P. 14−21. DOI: https://doi.org/10.18127/j15604128-202405-03 (in Russian)

1. Mak-Kaplin D.P. Paleosejsmologiya. T. 1. M.: Nauchny`j mir. 2011. 560 s.
2. Prudeczkij N.D., Sokolov K.O., Fedorova L.L. Analiticheskij obzor metodov issledovaniya treshhin v chetvertichny`x otlozheniyax kriolitozony`. Uspexi sovremennogo estestvoznaniya. 2019. № 11. S. 185–191.
3. Bricheva S.S., Deev E.V., Dergach P.A., Zobnin G.Yu. Geofizicheskie issledovaniya poverxnostny`x razry`vov paleozemletryasenij na vostochnom flange Kubadrinskogo razloma, Gorny`j Altaj / Sb. mater. 19-j nauchno-prakt. konf. i vy`stavki «Inzhenernaya i rudnaya Geofizika 2023». Sankt-Peterburg. 15–19 maya 2023. S. 303–307.
4. Lunina O.V., Gladkov A.S., Afon`kin A.M., Serebryakov E.V. Stil` deformacij v zone dinamicheskogo vliyaniya Mondinskogo razloma po danny`m georadiolokacii (Tunkinskaya vpadina, yug Vostochnoj Sibiri). Geologiya i geofizika. 2016. T. 57. № 9. S. 1616–1633. DOI: 10.15372/GiG20160902.
5. Ovsyuchenko A.N., Edemskij D.E., Zhostkov R.A. Aktivnaya tektonika Vostochnoj Arktiki: novy`e danny`e geologo-geofizicheskix issledovanij na my`se Fomy` (zapad ostrova Vrangelya). Geotektonika. 2022. № 3. S. 3–19. DOI: 10.31857/S0016853X22030055.
6. Edemskij D.E., Edemskij F.D., Morozov P.A. Profilirovanie i opredelenie parametrov sredy` pri provedenii georadarny`x obsledovanij. E`lektromagnitny`e volny` i e`lektronny`e sistemy`. 2010. T. 15. № 9. S. 56–64.
7. Ovsyuchenko A.N., Zhostkov R.A., Prokopovich I.V., Edemskij D.E. Sejsmotektonicheskie issledovaniya o. Zemlya Aleksandry` i sejsmicheskaya opasnost` arxipelaga Zemlya Francza-Iosifa / Sb. nauch. mater. II Lavyorovskie chteniya. Arktika: aktual`ny`e problemy` i vy`zovy`. Arxangel`sk: FGBUN FICzKIA UrO RAN. 2023. S. 305–309.
8. Ovsyuchenko A.N., Zhostkov R.A., Edemskij D.E., Sobisevich A.L., Sy`solin A.I., Presnov D.A. Aktivnaya tektonika severo-vostochnogo Tajmy`ra (gory` By`rranga) i voprosy` sejsmotektonicheskoj regionalizacii rossijskoj Arktiki. Fizika zemli. 2023. № 6. S. 207–223. DOI: 10.31857/S0002333723060133.
9. Ovsyuchenko A.N., Korzhenkov A.M., Maly`shev A.A., Edemskij D.E., Butanaev Yu.V., Lar`kov A.S., Andreeva N.V. Sejsmicheskie deformacii na antichnom gorodishhe Raevskoe i sejsmotektonika Severo-Zapadnogo Kavkaza. Geofizicheskie processy` i biosfera. 2023. T. 22. № 2. S. 75–108. DOI: 10.21455/GPB2023.2-3.
10. Tumskoj V.E., Edemskij D.E., Prokopovich I.V., Lev S.Yu. Georadiolokacionnoe zondirovanie opolznevy`x sklonov v doline r. Osetr / Sb. mater. 19-j nauchno-prakt. konf. i vy`stavki «Inzhenernaya i rudnaya Geofizika 2023». Sankt-Peterburg. 15–19 maya 2023. S. 428–435.
11. Edemskij D.E., Petrov N.F., Prokopovich I.V. Primenenie nizkochastotny`x georadarov dlya izucheniya i kontrolya e`kzogenny`x geologicheskix processov. Razvedka i oxrana nedr. 2021. № 9. S. 14–23.
12. Forte E., Pipan M., Casabianca D., Di Cuia R., Riva A. Imaging and characterization of a carbonate hydrocarbon reservoir analogue using GPR attributes. Journal of Applied Geophysics. 2012. V. 81. P. 76–87. DOI: 10.1016/j. jappgeo.2011.09.009.
13. Zhao W.K., Forte E., Dossi M., Pipan M. Integrated attribute analysis for improved GPR data interpretation / 16th International Conference on Ground Penetrating Radar (GPR). Hong Kong, China. 2016. p. 1–5. DOI: 10.1109/ICGPR.2016.7572678.
14. Petrov N.F., Nikonorova I.V., Nikitina O.V. Strukturnoe opolznevedenie: aspekty` klassifikacii. Cheboksary`: Izd-vo Chuvash. un-ta. 2017. 217 s.
15. Edemskij D.E., Tumskoj V.E., Prokopovich I.V. Georadarnoe obsledovanie arkticheskix poligonal`no-zhil`ny`x struktur. Geologiya i geofizika. 2024. Т. 65. № 6. S. 886–896. DOI: 10.15372/GIG2023186.
16. Ovsyuchenko A.N., Lar`kov A.S., Sy`solin A.I., Rogozhin E.A., Sobisevich A.L., Che`n` Cz., Lyu Cz., Cin` Cz. Sovremennoe tekto-nicheskoe razry`voobrazovanie na gryazevom vulkane gory` Karabetova, Tamanskij poluostrov. Doklady` Rossijskoj akademii nauk. Nauki o Zemle. 2020. T. 492. № 1. S. 88–93. DOI 10.31857/S2686739720050187.