Уважаемые коллеги!
26 ноября (среда) 2025 г. в 10:00 в конференц-зале ИНГГ СО РАН (к. 315) состоится геофизический семинар:
"Численное моделирование деформационных процессов в геосреде"
Докладчик: д.ф.-м.н. Стефанов Юрий Павлович, ведущий научный сотрудник лаборатории глубинных геофизических исследований и региональной сейсмичности
Аннотация: В докладе представлен подход численного моделирования деформационных процессов в геосреде на разных масштабах. Подход основан на решении уравнений динамики упруго-вязкопластичной среды с помощью конечно-разносного метода сквозного расчета. Данный подход позволяет рассматривать как динамические, так и квазистатические процессы деформации. Показаны особенности постановки задач для изучения разных процессов. Основное внимание уделено математической модели описания деформации за пределом упругости, которая основана на комбинированной предельной поверхности с использованием неассоциированного закона течения. Такая модель позволяет описывать процесс необратимой деформации с учетом дилатансии и компакции. Приведены примеры численного моделирования поведения образцов горных пород, иллюстрирующие адекватность модели. Рассмотрен ряд примеров моделирования динамических и квазистатических процессов деформации в геологической среде на различных масштабах, включая формирование зон необратимой деформации в окрестности скважин, развитие полос локализованного сдвига в осадочном слое, расчет напряженного состояния фрагментов земной коры и др.
Hydrological aspects of Transbaikalia discussed in Uzbekistan
The research focus on the Paleozoic (“old life”) era
Anomalies and more: An increasing interest in IPGG SB RAS research works from scientists around the world
Honoring the memory of the Master… A.E. Kontorovich will always be in our hearts
A cooperation agreement signed between IPGG SB RAS and Peking University (China)
IPGG’s experience in using direct surface geochemical methods in soils and snow cover for hydrocarbon prospecting
The research focused on quantification of residual hydrocarbon resources in the West Siberian Super Basin
Scientists from IPGG SB RAS visited China to participate in a large international conference
Scientists have evaluated the suitability of groundwaters as sources of drinking water in the Arctic permafrost regions of Russia
Novel methods for numerical modeling of physical processes in geophysical applications are being developed IPGG SB RAS
Boreal ammonoid fauna: scientists from IPGG SB RAS study geographical distributions of ammonoids that lived about 240 million years ago in marine basins of the Northern Hemisphere
Uzon volcano caldera: scientists go for the world's youngest oil
Novosibirsk scientists have developed an effective algorithm for large-scale industrial applications
IPGG SB RAS researchers investigate belemnite rostra collected in northern Siberia
IPGG SB RAS scientists have developed a technique to evaluate safety of buildings and structures
Autonomous seismic stations help investigate coal seams in mines
IPGG SB RAS researchers discussed investigation of geological hazards associated with occurrence of depression zones in the areas of Gorny Altai and Caspian Basin
Early Cretaceous oysters: seminal results
IPGG SB RAS traditionally hosts a large conference on geosciences
A delegation from Peking University (PKU) visited the Trofimuk Institute of Petroleum Geology and Geophysics, Siberian Branch of the Russian Academy of Sciences
A multidisciplinary endeavour at the intersection of seismotectonics and geophysics will allow detection of seismically hazardous faults in mountain and high-altitude permafrost areas
A local high-resolution geomagnetic model designed and developed at IPGG SB RAS will beat foreign counterparts
Discussion on geophones
Russian scientists study thermal springs in Central Baikal Rift Zone
An ultra-high precision temperature recorder applicable to bottom water monitoring in Lake Baikal has been created
Implications of megaflood occurred tens of thousands of years ago in Altai region
Trees and shrubs assist scientists in geophysical surveys
Research focus on Yamal
Ordovician communities of photosynthetic organisms in Gorny Altai (Altai Mountains) as a research focus of a young scientist at IPGG SB RAS
IPGG SB RAS’ delegation in China: work in progress
Visitors hospitably welcomed at the Paleontological Museum of IPGG SB RAS
IPGG SB RAS specialists discussed major trends in the development of Russia’s and global fuel and energy complex
Geophysicists started testing seismic vibration monitoring system at SKIF site
A success of IPGG SB RAS ― OGRI RAS joint workshop
Young researchers from IPGG SB RAS have won prestigious Rosneft Academic Tournament
IPGG SB RAS’s continued research into geochemistry of oils and condensates from the northern and Arctic regions of Western Siberia
IPGG SB RAS researchers took part in the Ural Lithological Biennale 2024
Scientists from IPGG SB RAS continue to study sedimentary successions in Arctic regions of Western Siberia
IPGG SB RAS to unveil the phenomenon of hazardous frost heave mounds in Yamal
Siberian and Far Eastern scientists collaborate to create a conceptual model of the formation of the composition of thermal waters of Transbaikalia
Scientific Cooperation Agreement signed between IPGG SB RAS and Northwestern University (China)
A major scholar from China spoke at the seminar at IPGG SB RAS
Scientists discovered dinosaur footprints from the Cretaceous of Transbaikalia
Fossil pollen (radiometric date of 23 - 27 mln years ago) of ancestor forms of Cathaya conifers, a rare subtropical coniferous plant species, found in the Novosibirsk region
The designed at IPGG SB RAS geophysical instrument is successfully used to solve different tasks
A postgraduate student from Zimbabwe studying at Novosibirsk State University presented his PhD dissertation at the geophysical seminar at IPGG SB RAS
Scientists from three institutes studied ceramics of ancient inhabitants of the Novosibirsk region using a multidisciplinary analysis (MDA)
Scientists from IPGG SB RAS maintain fruitful cooperation with colleagues from China
Experiment conducted by Siberian scientists to determine toxicity levels in vapor-gas flows from technogenic substances (in wastes storage sites of the mining industry)
The software solution developed by a Master’s student of Novosibirsk State Technical University implemented at IPGG SB RAS
