scholarly journals USAGE OF PROGRAM ALGORYTHMIC TOOL OF OSR-97 METHODIC IN DETAILED SEISMIC ZONING PROBLEMS

2015 ◽  
Author(s):  
С.А. Перетокин
Keyword(s):  
Seismic Hazard ◽  
Russian Federation ◽  
Hazard Assessment ◽  
Seismic Hazard Assessment ◽  
Soil Conditions ◽  
Seismic Zoning ◽  
The Russian Federation ◽  
Detailed Seismic Zoning

В Российской Федерации исторически сложилась двухступенчатая схема оценки сейсмической опас- ности - оценка исходной сейсмичности для средних грунтов и последующая корректировка оценок с уче- том реальных грунтовых условий площадки Historically in the Russian Federation formed two-staged assessment scheme of seismic hazard assessment of the initial seismicity for average soils and the following correction of assessments with accounting of site real soil conditions

scholarly journals Seismic hazard assessment for the underwater gas pipeline route in the water area of the Nevelskoy Strait

Vestnik MGTU ◽  
2021 ◽  
Vol 24 (1) ◽  
pp. 14-34
Author(s):  
S. A. Kovachev ◽  
A. A. Krylov
Keyword(s):  
Seismic Hazard ◽  
Hazard Assessment ◽  
Oil And Gas ◽  
Seismic Hazard Assessment ◽  
Gas Pipeline ◽  
Soil Conditions ◽  
Seismic Zoning ◽  
Seismic Effects ◽  
Seismic Microzoning ◽  
Pipeline Route

The presence of seismic threat multiplies the environmental hazard, especially for oil and gas production and transport facilities in water areas. Currently, there are no normative maps of general seismic zoning of the water areas of the inland and marginal seas of Russia, especially since there are practically no maps of detailed seismic zoning and seismic microzoning of even individual parts of the water areas. Taking into account the fact that intensive development of offshore oil and gas fields and the Northern Sea Route has begun, the development of such maps becomes a very urgent scientific and practical task. The seismic hazard assessment for the submerged crossing was carried out in 2008. The initial seismic effects were calculated using a probabilistic seismic hazard analysis based on five models of seismic zones and three types of models of attenuation of peak and spectral accelerations. The results of the performed calculations, including deaggregation, have shown that the initial seismicity of the area of the gas pipeline crossing route through the Nevelskoy Strait for a return period of 1,000 years is lower than indicated on the OSR-2016-B map, where the eastern end of the crossing route through the strait is characterized by the initial seismicity equal to 9 points. The soil conditions (seismic microzoning) have been taken into account by three different methods: the seismic rigidity method, the calculation method, and the method considering the thickness of Quaternary deposits. The present studies show that seismic effects vary along the pipeline route from the mainland to Sakhalin Island from 8.4 to 8.9 on the MSK-64 scale for the recurrence period of seismic shaking T = 1,000 years and from 9.3 to 9.7 points for T = 5,000 years.

Seismicity and Seismic Hazard Assessment for the Magadan region on a Scale Close to Detailed Seismic Zoning

2020 ◽  
Vol 56 (1) ◽  
pp. 93-105
Author(s):  
A. I. Lutikov ◽  
N. V. Andreeva ◽  
I. P. Gabsatarova ◽  
G. Yu. Dontsova ◽  
L. I. Karpenko
Keyword(s):  
Seismic Hazard ◽  
Hazard Assessment ◽  
Seismic Hazard Assessment ◽  
Seismic Zoning ◽  
Magadan Region ◽  
Detailed Seismic Zoning

Seismic zoning characterization for the seismic hazard assessment in south-eastern Romania territory

2004 ◽  
Vol 39 (2-3) ◽  
pp. 259-274 ◽  
Author(s):  
G. Marmureanu ◽  
E. Popescu ◽  
M. Popa ◽  
A. I. Moldovan ◽  
A. O. Plăcintă ◽  
...  
Keyword(s):  
Seismic Hazard ◽  
Hazard Assessment ◽  
Seismic Hazard Assessment ◽  
Seismic Zoning ◽  
South Eastern

scholarly journals Assessment of social aspects of seismic hazard

2021 ◽  
Vol 929 (1) ◽  
pp. 012030
Author(s):  
T I Danilova ◽  
S A Peretokin ◽  
N S Medvedeva ◽  
K N Akatova
Keyword(s):  
Seismic Hazard ◽  
Russian Federation ◽  
Federal District ◽  
Social Aspects ◽  
Population Estimates ◽  
Seismic Zoning ◽  
The Russian Federation ◽  
Far Eastern ◽  
First Time ◽  
High Seismicity

Abstract This paper is intended to illustrate the applicability of the results obtained from the investigations of social aspects of seismic hazard of the Russian Federation (RF) through the example of the high-seismicity region – the Far Eastern Federal District (FED). Within the FED the comparison of the areas of various seismic zones as per regulatory maps of General Seismic Zoning dated 2016 (GSZ-2016) has been performed and population estimates for each zone have been obtained. For the first time population estimates for zones with increased seismic hazard – grades A, B and C as per GSZ-2016 – are provided. The data obtained may be used for the evaluation of additional risks for FED’s population.

scholarly journals Models of strong ground motions for probabilistic detailed seismic zoning of the territory of North Ossetia-Alania. Part I

2019 ◽  
Author(s):  
Ю.К. Чернов ◽  
А.Ю. Чернов ◽  
М.И. Читишвили
Keyword(s):  
Russian Federation ◽  
Maximum Amplitude ◽  
Seismic Zoning ◽  
Strong Earthquakes ◽  
Ground Shaking ◽  
The Russian Federation ◽  
Detailed Seismic Zoning ◽  
Effective Models ◽  
High Level ◽  
Strong Ground

В РСОАлания проводятся исследования по созданию новой вероятностной карты ДСР данной территории. Составная часть этих исследований разработка эффективных моделей сильных движений грунта (СДГ) при потенциально опасных землетрясениях региона. В первой части посвященной данным исследованиям статьи рассмотрены модели единичных характеристик СДГ пиковых ускорений грунта (PGA), периодов ускорений с максимальной амплитудой (Ta), длительностей основной фазы колебаний (), а также макросейсмической интенсивности (балльности) сотрясений (I). Модели представлены в виде статистически заданных функций распределения вероятностей случайных величин (значений параметров колебаний и силы сотрясений грунта) при различных магнитудах землетрясений (М) и расстояниях до очага (D). Модели строились в два этапа. Сначала определены среднестатистические функции изменения с расстоянием PGA(М,D), Ta(М,D), (М,D) и I(М,D). Затем, путем введения в эти зависимости корректирующих поправок они приближены к условиям исследуемой территории РСОАлания. Среднестатистические зависимости строились на основе анализа большого объема исходных данных по инструментальной регистрации и макросейсмическим описаниям сильных землетрясений. Использованы данные двух видов. Первый подборки из 35ти и 24х известных и апробированных эмпирических зависимостей PGA(M,D) и I(M,D), построенных разными авторами для различных сейсмоактивных районов мира. Второй непосредственные измерения по более, чем 2500 акселерограммам ощутимых и сильных землетрясений мира, имеющих одновременную оценку силы сотрясений в точке регистрации. Использованы также макросейсмические описания нескольких десятков сильных землетрясений на территории РФ и других стран. Корректирующие поправки определены на основе анализа общих сейсмотектонических условий территории, особенностей среды распространения сейсмических возмущений, механизмов очагов и других характеристик исследуемого района, влияющих на моделируемые параметры СДГ. Для проверки надежности и реалистичности разработанных моделей, проведено перекрестное (между собой) сопоставление получаемые на их основе оценок PGA, Ta, и I. Проведено также сопоставление полученных моделей с разработками других авторов, для других районов. Во всех случаях наблюдается высокий уровень согласованности и непротиворечивости, полученных в настоящем исследовании результатов. В целом разработанные модели отвечают основным требованиям международной и отечественной инженерносейсмологической практики, способствуют повышению точности и надежности вероятностных оценок сейсмической опасности на региональном уровне и могут быть использованы в целях ДСР территории РСОАлания при производстве как вероятностных, так и детерминистских (сценарийных) оценок. In RNOAlania studies to establish a new probabilistic maps of the Detailed Seismic Zoning (DSZ) are being conducted. An integral part of these studies is the development of effective models of Strong Ground Motion (SGM) in potentially dangerous earthquakes in the region. In the first part of the article devoted to these studies, the models of single characteristics SGM Peak Ground Accelerations (PGA), periods of accelerations with maximum amplitude (Ta), durations of the main phase of oscillations (), as well as macroseismic intensity (score) of shaking (I) are considered. The models are presented in the form of statistically given functions of probabilities distribution of random variables (values of fluctuations parameters and force of ground shaking) at various magnitudes of earthquakes (M) and distances to the center (D). Models were built in two stages. First, the average change functions with the distance PGA(М,D), Ta(М,D), (М,D) and I(М,D) are determined. Then, by introducing corrective amendments into these dependences, they were brought to close the conditions of the investigated territory of the RNOAlania. Average dependences were based on the analysis of a large amount of initial data on instrumental registration and macroseismic descriptions of strong earthquakes. Two types of data were used. The first is a collection of 35 and 24 known and tested empirical dependences of PGA(M,D) and I(M,D), built by different authors for different seismic regions of the world. The second is direct measurements of more than 2,500 accelerograms of the worlds palpable and strong earthquakes, which have a simultaneous assessment of the shaking strength at the point of registration. Also used the macroseismic descriptions of several tens of strong earthquakes in the territory of the Russian Federation and other countries. Corrective amendments are determined on the basis of the analysis of general seismotectonic conditions of the territory, features of the medium of seismic disturbances, mechanisms of foci and other characteristics of the study area affecting the simulated parameters of SGM. To verify the reliability and realism of the developed models, a crosscomparison (among themselves) obtained on the basis of their estimates of PGA, Ta, and I. The comparison of the obtained models with the developments of other authors for other areas is also carried out. In all cases, there is a high level of consistency and connectivity in the results obtained in this study. In general, the developed models are in agreement with the basic requirements of international and domestic engineeringseismological practice, contribute to the accuracy and reliability of probabilistic seismic hazard assessments at the regional level and can be used for the purposes of DSZ of the territory of the Russian Federation in the production of both probabilistic and deterministic (scenario) assessments.

Seismic Hazard Assessment and Numerical Modeling for Seismic Microzonation purpose of Dushanbe, Tajikistan

2020 ◽  
Author(s):  
Farkhod Hakimov ◽  
Hans-Balder Havenith ◽  
Anatoly Ischuk ◽  
Marco Pilz ◽  
Klaus Reicherter
Keyword(s):  
Seismic Hazard ◽  
Hazard Assessment ◽  
Urban Areas ◽  
Seismic Hazard Assessment ◽  
Seismic Microzonation ◽  
Soil Conditions ◽  
Seismic Action ◽  
City Area ◽  
Local Soil ◽  
Local Soil Conditions

<p>Seismic hazard assessment of urban areas is an important and extremely challenging task. It is so important because without the knowledge of the influence of local soil conditions and properties, of the changing layer thickness in urban areas, and without considering multiple possible scenario earthquakes for this territory, engineers do not have enough information on how to design and construct seismically safe buildings. The particular challenge of this task is due to the great uncertainty affecting the prediction of the spatially (and sometimes even temporally) changing seismic properties of soils with respect to urban development.<br>Dushanbe is the capital of Tajikistan, a mountainous country marked by high to very high seismic hazard. The reason for the high seismic hazard specifically near Dushanbe is related to its location between two fault systems: South Gissar fault and Ilek-Vaksh fault.  Estimation of the seismic hazard of the urban areas in Tajikistan is very important because they had developed in a very short time and many high buildings are being constructed now Existing seismic action estimations are based on the old approaches when the main factors of the local soil conditions only consider general engineering-geological features of the territory as well as macro-seismic observations data. An additional problem is the building code in Tajikistan; it uses the estimation of the ground motions in terms of the MSK-64 scale, but does not enough take into account the variety of the soil conditions in the Dushanbe city area. Existing seismic hazard estimation of the area of Tajikistan is based on the so-called “The map of general seismic zoning of the territory of Tajikistan”, that was produced in 1978 in terms of MSK-64 scale. The seismic microzonation map of the Dushanbe city area was made in 1975 in terms of MSK-64 scale as well and was based on the engineering-geological approach mostly. This map does not represent the highly variable soil conditions of the Dushanbe city area which are partly due to the anthropogenic influence of the large city. Therefore, earlier seismic zonation maps assigned an intensity of IX to most districts of the city. However, those previous studies did not sufficiently quantify the local effects of soils on the seismic hazard, mainly the macro-seismic conditions (the relative distance of districts to fault lines) were considered for the zonation. <br>This study describes and implements a number of new approaches to the evaluation of maximum seismic impact and site effect values. </p>

scholarly journals RECOMMENDATIONS ON THE DEVELOPMENT OF PROBABILITY MAPS OF SEISMIC ZONING OF THE TERRITORY OF KAZAKHSTAN BASED ON MODERN METHODOLOGY

2020 ◽  
Vol 6 (444) ◽  
pp. 236-244
Author(s):  
D. K. Suleyev ◽  
◽  
N. B. Uzbekov ◽  
A. B. Sadykova, ◽  
N. V. Silacheva ◽  
...  
Keyword(s):  
Seismic Hazard ◽  
Hazard Assessment ◽  
Seismic Hazard Assessment ◽  
Seismic Intensity ◽  
Eurocode 8 ◽  
Seismic Zoning ◽  
New Approach ◽  
Earthquake Resistant Design ◽  
Earthquake Resistant ◽  
Scale Levels

Minimization of fatalities, material damage, and socio-economic destruction due to earthquakes depends on reliable estimates of seismic hazard. The paper presents the methodological foundations of seismic hazard assessment developed for Kazakhstan, the basic requirements and the list of work required to carry out seismic zoning of territories at different scale levels – general, detailed and microzoning. They were tested during the creation of Maps of General Seismic Zoning of the Territory of Kazakhstan, which were included in regulatory documents in 2017 and Maps of Seismic Microzoning of Almaty on a new methodological basis. A new approach to seismic hazard assessment is based on a methodology that complies with the main provisions of Eurocode 8 “Design of structures for earthquake resistance”, meets the needs of earthquake-resistant design and construction, is probabilistic and allows to assess seismic hazard not only in seismic intensity according to MSK-64(K) scale common for Kazakhstan, but also in quantitative parameters – peak ground accelerations. For each type of seismic zoning, general objectives are defined that can be solved with consideration of the scale of developed maps.

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