Anatoly Ischuk

Anatoly Ischuk
Institute of Geology, Tajikistan · Seismic Hazard Assessment

Ph.D.

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43
Publications
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Publications

Publications (43)
Article
Full-text available
Central Asian countries, which include Kazakhstan, the Kyrgyz Republic, Tajikistan, Turkmenistan, and Uzbekistan, are known to be highly exposed to natural hazards, particularly earthquakes, floods, and landslides. With the aim of enhancing financial resilience and risk-based investment, planning to promote disaster and climate resilience in Centra...
Article
Full-text available
In the territory of Dushanbe city, the capital of Tajikistan, detailed geological and geophysical data were collected during geophysical surveys in 2019–2020. The data comprise 5 microtremor array measurements, 9 seismic refraction tomography profiles, seismological data from 5 temporary seismic stations for standard spectral ratio calculations, 60...
Technical Report
This report presents a Probabilistic Seismic Hazard Assessment (PSHA) for three countries in Central Asia. The project comprises the compilation and improvement of all available data on local seismicity (earthquake catalogs) and active faults for seismic source characterization, as well as the description of ground motion attenuation characteristic...
Preprint
Full-text available
Central Asia is an area characterized by complex tectonic and active deformation, largely due to the relative convergent motion between India and Arabia with Eurasia. The resulting compressional tectonic regime is responsible for the development of significant seismic activity, which, along with other natural hazards such as mass movements and rive...
Preprint
Full-text available
Central Asian countries, which include Kazakhstan, the Kyrgyz Republic, Tajikistan, Turkmenistan, and Uzbekistan, are known to be highly exposed to natural hazards, particularly earthquakes, floods, and landslides. With the aim of enhancing financial resilience and risk-based investment planning to promote disaster and climate resilience in Central...
Article
Full-text available
In current Probabilistic Seismic Hazard Analysis we analyzed an area and fault models. Shallow crust and deep earthquakes are occurred in the area of Tajikistan, and used two area models for shallow earthquakes and one area model for the deep earthquakes. Additionally, we used so called “Woo’s model” or “point model” which is based on the past seis...
Article
Full-text available
In this study, we have created 10 geoscience video lessons that follow the paired-teaching pedagogical approach. This method is used to supplement the standard school curriculum with video lessons, instructed by geoscientists from around the world, coupled with activities carried out under the guidance of classroom teachers. The video lessons intro...
Article
Full-text available
Being a country exposed to strong seismicity, the estimation of seismic hazard in Tajikistan is essential for urbanized areas, such as the rapidly growing capital city Dushanbe. To ensure people's safety and adequate construction work, a detailed seismic microzonation is the key to proper hazard planning. Existing estimations of seismic hazard date...
Preprint
Full-text available
Lack of access to science-based natural hazards information impedes the effectiveness of school-based disaster risk reduction education. To address this challenge, we have created ten geoscience video lessons that follow the paired teaching pedagogical approach. This method is used to supplement the standard school curriculum with video lessons ins...
Article
Full-text available
At the northwestern tip of the India‐Asia collision zone, the Pamir orocline overrides the Tajik Depression and the Tarim Basin and collides with the Tian Shan. Currently, the Pamir's northern edge exhibits localized shortening rates of 13–19 mm/yr. While the eastern Pamir and the Tarim Basin move northward nearly en block, north‐south shortening d...
Article
Full-text available
Post-glacial geomorphological settings bearing vast amounts of colluvium as well as alluvial and moraine deposits are typical features in high mountainous environments such as the Himalayas, the Hindu Kush, the Pamir, the Karakoram and the Tien Shan. Due to a lack of alternative living space in narrow valleys, agglomerations are often located on th...
Article
Full-text available
The Cenozoic convergence between India and Asia has created Earth's thickest crust in the Pamir‐Tibet Plateau by extreme crustal shortening. Here we study the crustal structure of the Pamir and western Tian Shan, the adjacent margins of the Tajik, Tarim, and Ferghana Basins, and the Hindu Kush, using data collected by temporary seismic experiments....
Article
Full-text available
Geodetically derived velocities from Central Asia show that Northern Afghanistan, the Tajik Pamir, and northwestern Pakistan all move northward with comparable large velocities toward Eurasia. Steep velocity gradients, hence high strain rates, occur only across the Main Pamir Fault zone and with lesser magnitude between the northernmost Hindu Kush...
Conference Paper
Full-text available
Disaster education in schools can raise awareness among students, teachers, and parents, leading to more accurate risk perception and better understanding of protective measures. For a disaster education curriculum to be effective, particularly in the context of earthquakes, the curriculum must be science-based. For example, to prepare for earthqua...
Article
Full-text available
In summer of 2015 we had completed a geophysical survey complemented by borehole drilling near the right-bank slope of the Rogun Dam construction site, Tajikistan. These data were first processed and then compiled within a 3D geomodel. The present paper describes the geophysical results and the 3D geomodel generated for an ancient mass movement loc...
Article
Full-text available
Seismologic and geologic fault-slip data characterize the active deformation of the intramontane Tajik basin and its margins, the Tian Shan, Pamir, and Hindu Kush at the northwestern tip of the India-Asia collision zone. Within this complexly deforming region, the Tajik basin lithosphere forms the backstop for the north-dipping Indian-slab subducti...
Article
Full-text available
Central Asia is a region of large crustal compression due to the collision of the Eurasian and Indian plates. The significant convergence and crustal shortening is located within the Pamir and Tien Shan belts, and the deformation resulted in many Mw ≥7 earthquakes throughout the region, recorded historically as well as instrumen-tally. Consequently...
Conference Paper
Full-text available
The ongoing construction and further operation of the Rogun HPP in one of the most seismically active regions of Central Asia can cause activation of dangerous processes along the slopes adjacent to the dam and reservoir. Among the gravitational mass displacements recorded near the major hydroelectric facilities, the old right-bank landslide locate...
Article
The terminal stage of subduction sets in when the continental margin arrives at the trench and the opposite forces of the sinking slab and buoyant continent extend and ultimately sever the subducted lithosphere. This process, although common in geological history, is short-lived, and therefore rarely observed. The deep seismicity under the Hindu Ku...
Article
Wire deterministic seismic hazard assessment in the values of seismic intensity on the MSK-64 scale. This estimate for the so-called maximum credible earthquake (MCE) probable earthquake-maximal, ie, caused by tectonic features. It determines the maximum magnitude, based largely on geological criteria.As a rule, such an assessment determines the va...
Data
Area Source model for Central Asia The area sources for Central Asia within the EMCA model are defined by mainly considering the pattern of crustal seismicity down to 50 km depth. Although tectonic and geological information, such as the position and strike distribution of known faults, have also been taken into account when available. Large area...
Article
Full-text available
Central Asia is one of the seismically most active regions in the world. Its complex seismicity due to the collision of the Eurasian and Indian plates has resulted in some of the world’s largest intra-plate events over history. The region is dominated by reverse faulting over strike slip and normal faulting events. The GSHAP project (1999), aiming...
Article
Full-text available
A sparse network of six continuous and two campaign sites in western Pakistan, Tajikistan, Kyrgyzstan, and northern Afghanistan establish bounds on the modern strain rate across several large fault systems in the region, including the Chaman, Darvaz-Karakul and Herat faults. Prior estimates of slip rate on these faults from a variety of field and r...
Article
GPS velocities measured in the Pamir and surrounding regions show a total of ~30 mm/yr of northward relative motion between stable Pakistan and Eurasia. The convergence budget is partitioned into 10–15 mm/yr of localized shortening across the Trans-Alai Thrust, which bounds the Pamir on the north, consistent with southward subduction of intact lith...
Article
Full-text available
This paper presents an overview of seismic and mass movement hazards affecting major Hydropower-plants (HPP) and ongoing dam projects in the mountain regions of Central Asia. HPP cascades are located along the Naryn River in the Kyrgyz Republic and the Vakhsh-Surkhob valley fault zone in Tajikistan. The latter region hosting the presently and futur...
Article
In the process of updating existing PSHA maps in Central Asia, a first step is the evaluation of the seismic hazard in terms of macroseismic intensity by applying a data driven method. Following the Site Approach to Seismic Hazard Assessment (SASHA) [11], the evaluation of the probability of exceedance of any given intensity value over a fixed expo...
Chapter
The Usoi blockage, 2.2km3 in volume formed a World-highest natural dam and the Lake Sarez containing about 16km3 of water can pose a threat to the downstream Bartang – Pianj – Amu-Daria River valleys. Different view-points on the dams’ stability exist. Modern data on the dam and the potentially unstable lakeside are presented that are used for the...
Article
Full-text available
[1] Convergence of 29 ± 1 mm/yr between the NW corner of the Indian plate and Asia is accommodated by a combination of thrust and strike-slip faulting on prominent faults and apparent distributed deformation within the Hindu Kush, Pamir, South Tien Shan and Kohistan Ranges. An upper bound to the slip rate of known faults is obtained by ignoring dis...
Article
Full-text available
Earthquake-triggered landslides are a major geological hazard in Central Asia. In July 1949, the M7.4 Khait earthquake triggered many hundreds of landslides in a mountainous region near the southern limit of the Tien Shan Mountains, central Tajikistan. These landslides involved widespread rock-slope failure as well as large numbers of flowslides in...
Article
Full-text available
Landslides from massive rock slope failure (MRSF) are a major geological hazard in many parts of the world. Hazard assessment is made difficult by a variety of complex initial failure processes and unpredictable post-failure behaviour, which includes transformation of movement mechanism, substantial changes in volume, and changes in the characteri...
Article
Full-text available
Landslides from massive rock slope failure (MRSF) are a major geological hazard in many parts of the world. Hazard assessment is made difficult by a variety of complex initial failure processes and unpredictable post-failure behaviour, which includes transformation of movement mechanism, substantial changes in volume, and changes in the characteris...
Chapter
The capital city of Tajikistan, Dushanbe, was founded in 1924. It was renamed to Stalinabad in 1925, and then back to Dushanbe in 1961. The city is situated at an elevation of 760 to 800 meters above sea level. The geographic coordinates are 38°34′ north latitude and 68°48′ east longitude.
Article
In the suburb of Dushanbe, Tajikistan Republic of USSR, an earthquake of magnitude 5.5 took place on January 23, 1989. In this event, extensive liquefaction developed in the loess deposit of aeolian origin in the gently sloping hilly terrain and led to a series of catastrophic landslides accompanied by a large-scale mud flow. In contrast to the hit...

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