E. A. Rogozhin

Russian Academy of Sciences | RAS · Schmidt Institute of Physics of the Earth of the Russian Academy of Sciences

The ruins of Odessos are located on the territory of Varna, Bulgaria. Archaeoseismological studies carried out at the archaeological sites of ancient Odessos revealed some significant damage and destruction in the ancient building constructions. These are numerous breaks, tilts, protrusions and turns of wall parts, longitudinal asymmet-ric deformat...

We studied historical and paleoseismic deformations in the southern Issyk-Kul depression-on the territory of adyrs (piedmonts) of the Terskey Ala-Too ridge: 1) along the southern foot of the Kokonadyr-Tegerek mountains in the Ala-Bash-Konur-Olen intermountain depression; 2) in the Tossor river basin; 3) in the Chon-Kyzyl-Suu river valley; and 4) on...

We study an ancient earthquake that significantly damaged the Hansaray (Khansarai) in Bakhch-ysarai, Crimea, at the end of the 17th century. However, to date, the traces of this catastrophic event can barely be found in the Khansarai walls. Our studies have shown that this is mainly due to the numerous repairs and restorations which have been conti...

We have conducted a complex of archaeoseismological works in the ancient town of Myrmekion, which belonged to the Bosporan Kingdom (Crimea). Numerous instances of destruction and deformation of buildings were revealed in archeological excavations: ruptures displacing walls, significant tilt of entire walls of the buildings, and rotations of wall fr...

We conducted archaeoseismological studies at the Djanavara Monastery Complex in 2019. It consists of early medieval buildings of different ages, the main of which was the church. The church and the atrium were first badly damaged and then destroyed. There were attempts to repair them, as evidenced by the laying of a doorway in the north wall of the...

We have conducted a complex of archeoseismological works in Mirmekii ancient town. It belong to Bosporus Kingdom (Crimea). There were revealed numerous destructions and deformations of buildings in archeological excavations: ruptures displacing the walls, significant tilt of entire walls of the buildings, rotations of wall fragments and separate st...

Archeoseismological studies of the ruins of the Djanavara monastery complex (Varna, Bulgaria) have been carried out. The complicated character of the investigated destruction required different methods of archeoseismological investigation. Their description constitutes the first part of the paper. Different types of seismic deformations in building...

The Malyi Orgochor, Orgochor, Birbash, Sukhoi Ridge, Ichketosma, and Tosma uplifts in the eastern Issyk-Kul basin are fault-related anticlinal folds composed of Neogene and Quaternary sediments involved in tectonic motion. The folds have asymmetric transversal profiles, with low-angle southern limbs and steep northern limbs cut by segments of the S...

Настоящая работа посвящена изучению древнего землетрясения, значительно повредившего Ханский дворец в Бахчисарае в конце XVII в. Следы этого катастрофического события, тем не менее, на сегодняшний день практически невозможно найти в стенах Хансарая. Как показали наши исследования, во многом, это объясняется большим количеством ремонтов и реставраци...

In this study, seismic attenuation model is derived using recorded and simulated ground motions covering the data gap region of the Indo-Gangetic Plains (IGP), employing Artificial Neural Networks (ANN) methodology. Four independent variables, moment magnitude (Mw), focal depth, epicentral distance (Repi), and average shear wave velocity up to 30 m...

7, I ≥ IX баллов. Тренчинговые исследования показали, что с Южно-Иссык-кульским разломом связаны исторические землетрясения, произошедшие с разницей в тысячу лет (I и X-XI вв. н.э.). Новые данные по сейсмотектонике и палеосейсмичности региона позволяют скорректи-ровать оценку сейсмического потенциала восточной части Иссык-Кульской впадины. Внутривп...

Seismic hazard for the central indo-gangetic plains (CIGP) is either available in terms of generalized hazard spectrum as per IS 1893:2016 or in terms of only Peak Ground Acceleration (PGA) at the city level. Also, the study region falls in the seismic gap region, which has a potential for an earthquake of Mw>8.0. Hence, in this study, the seismic...

Our archeoseismological investigations in the Episcopal basilica in Varna have revealed signs of seismic deformations in its walls: numerous shifts, tilts, and rotations of the wall parts around the vertical axis, as well as through-wall cracks cutting several stone blocks in a row. A cluster of (at least) three seismic events occurred for a hundre...

As a result of studies conducted in the city of Derbent, it is established that its monumental fortification structures erected at the end of the 560s AD underwent numerous strong seismic shocks during their existence. The number and approximate ages of the strong seismic events that affected Derbent throughout its history are determined by the age...

The results of the latest research on active faults in Southern Dagestan, in the area of Derbent, using the paleoseismological and archeoseismological methods are highlighted. The zone of seismogenerat-ing fault-the Derbent segment of the regional tectonic boundary between the mountain structure of the Greater Caucasus and the North Caucasian fored...

New data and information about the ancient seismic events affected the archaeological sites on the Northern Bulgarian Black Sea coast are observed, collected and interpreted. Almost all seismic effects to the investigated archaeological sites, structures (excavated or surface), or rocks are expressed as fallen stones or bricks or cracks, or differe...

The results of paleoseismological, archeological, and dendrochronological studies and published materials have yielded the date of neotectonic Utrish seismic dislocations, one of the key components in seismic hazard studies of the Western Caucasus. According to previously obtained and newly acquired data, a destructive earthquake occurred here in t...

Archeoseismological studies of the ruins of the Janavara monastery complex (Varna, Bulgaria) have been completed. Complicated character of accumulated destructions has demanded different methods of archeoseismological investigations. Their description is a content of the first part of the paper. There were considered different types of seismic defo...

The ancient city of Gorgippia is surrounded by well-known (North Black Sea, Kerch, and South Azov) seismogenerating zones, all of which are submarine, and only some of their branching faults reach the surface in the coastal zone. On the surface, in the vicinity of the ancient city, there are also seismoactive faults and flexure fault zones, which c...

The discovery of a unique archeological monument of the 6th century AD in the south of Dagestan (the Rubas Fortification) and archeoseismological studies of its military engineering objects have revealed many characteristic deformations caused by previously unknown historical earthquakes. Based on the arche-oseismological and geological data, trace...

We have conducted a study in Germonassa-Tmutarakan’ archeological monument. The study allows us to reveal a number of seismic deformations in the building constructions: tilts, shifts, walls collapse, walls rotations and chip deformations. Peculiarities of these deformations and their position in different levels of archeological section have allow...

Analysis of GPS-measurements made for the first time along the geodesic profile crossing all the main geological structures in the Ossetian region of the Greater Caucasus showed that significant jumps in the velocity of horizontal movements are observed in zones where strong earthquakes recently occurred. Interpretation of the measurement data is p...

In this paper, we consider a series of strong earthquakes that occurred on the central and eastern segments of the southern slope of the Greater Caucasus recorded in the late XX to early XXI centuries. We present a complex analysis of seismological manifestations, based on of which the seismological and geodynamic situation of the region in the ear...

The structure of the fault system of northeastern Bulgaria and, in particular, of the Intramoesian fault, is examined in order to assess their current activity. The Intramoesian fault and its branch disjunc-tives have not been sufficiently studied from the geological-geomorphological and seismological points of view. The authors conduct a complex o...

Significant number of expeditions to the Bulgarian and Russian costal areas has been performed during the last years in the frame of the bilateral scientific cooperation (common projects, unified methodologies, integrated complex geological and geophysical investigations, etc.). The main aim of these expeditions was to reveal the relationships betw...

The article presents the results of a comprehensive study of seismotectonic, geological-geophysical, geodynamic, and seismological data in the region of the Salsk earthquake of May 22, 2001, M = 4.7, in the low-seismic region of the junction of the Scythian Plate and the East European Platform are presented. The parameters of this earthquake source...

In the paper there are results of a recent study of the active faults in the Kerch Peninsula. There was compiled a Map of Active Faults - sources of the strong earthquakes occurred in Late Holocene. The map is a regional seismotectonic model of strong earthquake sources - detailed basis for a spatial prognosis of the seismic hazard. Results of the...

This paper reports recently obtained research data on active faults in the Kerch Peninsula. The compiled Map of Active Faults demonstrates foci of Late Holocene strong earthquakes. This map is a regional seismotectonic model of strong earthquake foci, and a detailed basis for prediction of spatial seismic hazards. According to the research results,...

An integrated approach to the new and interpreted geophysical data, natural hazards expressions and local natural resources is applied to reveal the relationships, dependencies and possible interactions between the potential geophysical fields, DEM and bathymetry, natural hazards developed in the regional geodynamic context and the natural resource...

We have studied paleoseismicity along the adyric (piedmont) Kokonadyr-Tegerek fault zone in the SW Issyk-Kul region. We have shown that although earthquake slip continues in the tectonic contact zone between the Paleozoic rocks of the Kokonadyr-Tegerek uplift and the Quaternary deposits of the Alabash-Konuroleng trough, still most earthquake-genera...

In the period from 2007 to 2017 complex geological and geophysical studies were carried out in the three largest flexural-rupture fault zones in the North-West Caucasus (Anapa, Akhtyrka and Moldavan). The micro-seismic sounding (MSM) was used as the main geophysical method. Studies with the help of MSM allowed us to identify the features of the dee...

The article summarizes the available and newly collected data on the near-surface and deep structure and modern geodynamics of key regions of the northwest part of the Greater Caucasus. Models of the fault-block structure of this orogen and the nature of seismogenic displacements along the faults on its northwest pericline have been developed. The...

As a result of the discovery of a unique archaeological monument – the Rubas Fortifi cation of the 6th century in the south of Dagestan – and the archeoseismological studies of its military engineering objects, it was found that they have a number of specifi c deformations caused by previously unknown historical earthquakes. According to the archeo...

The tectonic position and overall geodynamic setting, as well as the seismological characteristics and peculiarities of the aftershock process, are considered for the source of the strongest Near Aleutian earthquake of July 17, 2017, МW = 7.8, on the Commander Islands. It is shown that in contrast to the eastern segments of the Aleutian island arc,...

The tectonic position, seismological characteristics and features of the aftershock process of the source of the strongest Near-Aleutian earthquake on July 17, 2017 on the Commander Islands with Мw = 7.8 are considered. The analysis showed that the seismic source according to the distribution of aftershock epicenters in the form of a linearly elong...

The structure of the fault system of northeastern Bulgaria and, in particular, of the Intramisian fault has been investigated in order to assess their current activity. Intramiziysky fault and offshooting its disjunctive known in Romania and Bulgaria, but not studied geological and geomorphological and seismological point of view. The authors condu...

Abstract—The features of the spatial distribution of earthquake sources in the eastern Caucasus (within the borders of Azerbaijan and the Chechen Republic of the Russian Federation) are analyzed. According to the method developed in recent years to identify seismogenic zones of deep faults by manifestations of weak seismicity, transverse faults ext...

The Ganges–Brahmaputra Delta (GBD), the world’s largest delta, is composed of sediments eroded from the collision zone of Himalayas. These sediments moved the margin of the Indian Subcontinent for ~400 km and formed the thickest sedimentary sequence, which is subducted within the subduction zone of the Burma arc. A critical facility is located in t...

This paper discusses the tectonic setting, seismological characteristics, and the aftershock process for the great (MW = 7.8) Near-Islands Aleutian earthquake of July 17, 2017 off the Commander Islands. Our analysis showed that the rupture zone as inferred from the distribution of aftershock epicenters in the shape of an elongate narrow zone approx...

The Elbrus volcanic center is located in southern Russia on the northern slope of the main ridge of the Greater Caucasus. Current classifications define Elbrus as a dormant volcano that could become active even after millennia of quiescence. In this study, we use two new geophysical methods to assess the contemporary state of the Elbrus volcano. Th...

The evolution of scientific views on the structure of the sources of strong earthquakes at the end of the 20th and beginning of the 21th century in Russia is considered. The lack of a clear, consistent understanding of the structure of sources of the strongest seismic events was initially typical of the scientific concepts that emerged in the main...

In the paper there are results of archeoseismological study of an antic archeological monument – Mikhaylovka hill-fort located in Kerch’ peninsula. Studied deformations complex includes: systematic tilts, shifts and collapses of building constructions of latitudinal strike northward. Building elements of longitudinal strike tilted, shifted and coll...

В статье освещены результаты впервые выполненных GPS-измерений вдоль геодезического профиля, пересекающего все основные геологические структуры в Осетинском регионе Большого Кавказа. Интерпретация результатов измерений выполнена в сопоставлении с результатами неотектонических исследований и данными о глубинном строении. Максимальное уменьшение совр...

On May 12, 2008, a catastrophic earthquake with magnitude MS = 8.0 occurred in Wenchuan County, Sichuan, China. Its epicenter was located in the Longmen Shan mobile tectonic belt and its hypocentral depth was 14 km. The mainshock produced the system of primary seismodislocations (ruptures) on the surface: Beichuan–Yingxiu Fault of more than 240 km...

The process of the lead up and development of a catastrophic seismic event that affected the Earth’s crust and the upper mantle, which led to a change in the natural environment in the western part of the Zagros folded mountain belt, is analyzed. The macroseismic effect, the focal mechanism, the aftershock sequence, the seismotectonic position of t...

The paper presents the results of recent paleoseismological and archeoseismological investigations of the Kerch-Taman region. Data are obtained on local potential sources of large earthquakes that determine the seismic hazard level. The investigations convincingly show that the seismic activity level of the instrumental period of observations does...

According to obtained results of profiling by microseismic sounding method along the line in submeridional direction crossing the eastern cone of the Elbrus volcano and a magmatic chamber was found under the Elbrus volcano in the range of depths of 7‒13 km below sea level with horizontal size of ≈ 7 km. At the depths of 18‒40 km, a narrow linear ma...

The results of archeoseismological investigations of medieval architectural monuments-the Uzbek Mosque and Indzhi-Bey-Khatun Madrasah (Uzbek Madrasah-Mosque Complex)-in the town of Staryi Krym (eastern Crimean Peninsula) are presented. The character of revealed destructions and collapses unambiguously indicates their seismic origin. Local seismic i...

To ensure the safety of hydraulic engineering structures (HESs), we analyze the methods and requirements on equipment for seismological monitoring in the area of emplacement, inspecting the state of a dam, and vibration control of machinery operation. We present a technical solution realized for the Chirkey hydroelectric power station (HPS) (Caucas...

The paper substantiates and briefly describes an innovative project aimed at creating and using in practice effective space-, aviation, and ground-based early warning and monitoring technologies for precursors to large-scale earthquakes in order to increase the accuracy and reliability in the short-term forecasting of times and places of disasters....

At the beginning of the 21st century, a series of great earthquakes were recorded in northeastern Tibet, along the periphery of the Bayan Hara lithospheric block. An earthquake with MS = 8.1 occurred within the East Kunlun fault zone in the Kunlun Mountains, which caused an extended surface rupture with left-lateral strike slip. An earthquake with...

The contribution made by V.V. Beloussov (1907–1990), an outstanding Earth scientist in the former Soviet Union and Russia, to the development of planetary geophysics is considered. Beloussov was a brilliant coordinator of international cooperation and direct inspirer of international scientific programs of paramount importance. He took up one of th...

The results of the first GPS measurements along the geophysical profile that intersects all major geological structures of the Osetiya region of the Greater Caucasus are presented. The results of the measurements are interpreted in comparison with those of neotectonic studies and data on the deep structure.

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