SEISMIC DEFORMATIONS IN ARCHAEOLOGICAL MONUMENTS OF MUGKALA AND MUGTEPA (FERGANA DEPRESS, UZBEKISTAN)
A.M. Korzhenkov1, M.T. Usmanova2, A.A. Anarbaev3, M. Saidov4, Sh. Nasriddinov5, T.K. Zakhidov2
1.Schmidt Institute of Physics of the Earth, Russian Academy of Sciences, Moscow, Russia
2. Mavlyanov Institute of Seismology, Academy of Sciences of Republic of Uzbekistan, Tashkent, Uzbekistan
3 Tashkent Department of the Gulyamov Institute of Archaeological Research, Academy of Sciences of Republic of Uzbekistan, Tashkent, Uzbekistan
4 Gulyamov Institute of Archaeological Research, Academy of Sciences of Republic of Uzbekistan, Samarkand, Uzbekistan
5 Namangan State University, Namangan, Uzbekistan
Corresponding author: A.M. Korzhenkov, e-mail: korzhenkov@ifz.ru
Abstract. The article provides data on the geological, tectonical and seismological situation of the region. Results of archaeoseismological field studies of the ancient fortress and castle of Mugkala and Mugtepa in the Fergana Valley (Namangan region, Uzbekistan) are considered. On the archaeological sites, we revealed such characteristic destructions and damages as pitches, inclinations, shaking, sagging, and extend through cracks and inter-brick cracks in the city walls, confirming their seismogenic origin. Similar seismic deformations can be considered as an evidence of the high local intensity of seismic vibrations. It was noted that seismic shocks propagated along the sub-latitudinal axis. Both archaeological sites Mugtepa and Mugkala are located between the North Fergana Fault and the North Fergana flexural-breaks zone. The seismicity of the research area is associated with the development of the Kasansai group of young, quaternary anticlinal folds. А new residence on Mugtepa could be built by new kings of Fergana Valley in the end I c. BC and it was destroyed in I c. AD by a strong earthquake with local seismic intensity IL = VIII–IX (MSK-64 scale). The residence of the Turkic Kaganate could be built by new kings of Fergana Valley in a new location. Mugkala was also be destroyed by a strong earthquake with seismic intensity IL = VIII–IX (MSK-64 scale) at the end of the 8th century AD. This earthquake caused the different deformations described in the paper.
Keywords: seismic deformations, seismogenic faults, Fergana Valley, ancient earthquakes, Uzbekistan, Namangan region, Western Tien Shan, Kasansay region, Mugkala, Mugtepa
About the authors
KORZHENKOV Andrey Mikhailovich – Schmidt Institute of Physics of the Earth, Russian Academy of Sciences. Russia, 123242, Moscow, Bolshaya Gruzinskaya st., 10-1. E-mail: korzhenkov@ifz.ru
USMANOVA Makhira Turabovna – Mavlyanov Institute of Seismology, Academy of Sciences of Republic of Uzbekistan. Uzbekistan, 100128, Tashkent, Zulfiyakhonim st., 3. E-mail: m.usmanova@mail.ru
ANARBAEV Abdulkhamid Anarbaevich – Tashkent Department of Gulyamov Institute of Archaeological Research, Uzbekistan, 100047, Tashkent, Gulyamov st., 70. E-mail: anarbaev-ahsi@mail.ru
SAIDOV Muminkhon – Gulyamov Institute of Archaeological Research, Academy of Sciences of Republic of Uzbekistan. Uzbekistan, 140103, Samarkand, Iftixon st., 13/28. E-mail: saidovmumimkhon@mail.ru
NASRIDDINOV Shukrullo – Namangan State University. Uzbekistan, 140103, Namangan, Uichi st., 316. E-mail: bekruchka@gmail.com
ZAKHIDOV Takhir Kamilovich – Mavlyanov Institute of Seismology, Academy of Sciences of Republic of Uzbekistan. Uzbekistan, 100128, Tashkent, Zulfiyakhonim st., 3. E-mail: takhir.zakhidov.58@bk.ru
Cite this article as: Korzhenkov A.M., Usmanova M.T., Anarbaev A.A., Saidov M., Nasriddinov Sh., Zakhidov T.K. Seismic deformations in archaeological monuments of Mugkala and Mugtepa (Fergana Depress, Uzbekistan), Voprosy Inzhenernoi Seismologii (Problems of Engineering Seismology). 2020. V. 47, No. 3. P. 5–27. [in Russian]. https://doi.org/10.21455/VIS2020.3-1
English translation of the article will be published in Seismic Instruments, ISSN: 0747-9239 (Print) 1934-7871 (Online), https://link.springer.com/journal/11990