The Laboratory of Dynamic Analysis in Seismology takes origin from the Laboratory of Seismic Forward and Inverse Problems established by Sergey Vasilyevich Goldin* in 1970. Initially, the Laboratory sought to develop geophysical methods with the emphasis
on mathematics (e.g. mathematical statistics applied to problems of geology and geophysics). In the mid-70s, S.V. Goldin became engaged in the theory and algorithms to solve inverse kinematic problems in seismology and multidimensional spectral seismic
data analysis with the lab research focus shifted accordingly.
At that time, the laboratory team successfully developed the spectral-statistical method (G.M. Mitrofanov). A software package for kinematic analysis (KING system) for complexly built two-dimensional media – a product resulted from partnership with the
Siberian Geophysical Expedition (SibGE) under the Ministry of Oil Industry of the USSR – allowed estimating the parameters of structure and velocity of inhomogeneous layered 2D models of media with curved interfaces built from for P- and S-wave reflection
traveltime curves, which subsequently included converted waves, multiples and refraction profiles. In the mid-80s, a SPACE software package for 3D kinematic analysis was developed. Beginning from 1985, S.V. Goldin organized a summer school (a series of
lectures and workshops) for young geophysics which had become a much-in-demand talent foundry of professionals in seismics (both researchers and industry practitioners) for many years ahead.
In 1989, the Laboratory led by Georgy M. Mitrofanov, became primarily oriented to seismic forward and inverse problems and named accordingly. In the early 90s, scientific endeavors of S.V. Goldin’s were focused on the geometric theory of seismic
imaging, with the main results and findings applied in different fields : statistic methods of signal detection in seismic traces; solution of inverse kinematic problem for layered media; geometric theory of seismic imaging; physics of the source mechanism
of earthquakes. Time-migration velocity analysis by velocity continuation and DMO proposed by S.B. Fomel represents an incremental process that transforms migrated seismic sections according to changes in the migration velocity. The new lines of research
launched in the second half of the 90s included: (i) research in Dynamic Inverse Problems, e.g. AVOA inversion of PP reflections in anisotropic media, seismic dynamic inversion using multiwave AVOA data (T.V. Nefedkina); (ii) new technology based on Proni
filtering (G.M. Mitrofanov), a seismic data processing method for locating zones of frequency-dependent anomalous scattering and absorption of seismic energy. Subsequently, the zones can be correlated with target seismic horizons. Analysis and interpretation
of these zones may promote understanding of the target horizons features and help to connect these features with the presence of possible reservoirs.
The AVO-based seismic methods actively developed at the Laboratory in the 2000s are : inversion of data from the AVO analysis of longitudinal and exchange waves for determination of elastic parameters taking into account medium geometry structure and
anisotropy (T.V. Nefedkina); an improved approach to AVO inversion, which is based on effective reflection coefficients (ERCs) that describe near-critical and post-critical reflections (L.V. Skopintseva); asymptotic methods of extrapolating wavefield
into a shadow zone of caustics (A.A. Duchkov).
In 2008, when I.Yu. Koulakov was appointed head of the laboratory, the scope of lab research expanded by adding seismic tomography, and later the TWSM modeling, with the seismic diffraction team (K.D. Klem-Musatov, A.M. Aizenberg) joining the laboratory.
In 2016, the Laboratory was enlarged by a group conducting engineering seismic surveys (Yu.I. Kolesnikov, K.V. Fedin) as part of near-surface geophysics methods using elastic standing waves to detect and delineate inhomogeneities of various types, such as
cavities under an asphalt pavement by investigating its thickness to estimate qualitatively the ratio of the acoustic stiffness, e.g. pavement to the underlying layer.
Several Candidate of Sci. (PhD) dissertations (G.M. Mitrofanov, A.V. Okolsky, L.G. Kiseleva, V.G. Chernyakov, T.V. Kurdyukova, A.A. Duchkov, S.V. Yaskevich) and doctoral dissertations (S.V. Goldin, G.M. Mitrofanov) were defended through earlier history of
the Laboratory. The list has extended to include new names: V.S. Chernyak, D.I. Sudvarg, V.G. Pashkov, A.P. Sysoev, etc. Some of the student researchers pursued their PhD degrees abroad (S.B. Fomel, L.V. Skopintseva).
Our researchers conduct courses at Novosibirsk State University for students of the Department of Geology and Geophysics and provide scientific supervision to students and postdocs, and often collaborate on interdisciplinary research projects that
involve partnerships with different companies, both Russian (Sibneftegeofizika, Irkutskneftegeofizika, etc.) and foreign companies (Schlumberger, Baker Hughes, etc.).
*Sergey V. Goldin (1936-2007) earned his degrees of Candidate of Sci. (Ph.D.) in phys.-math. in 1966, Dr. Sc. in 1989; since 1991 Corresponding Member of the Russian Academy of Sciences; 1997-2004 Director of the Institute of Geophysics SB RAS
Деев Е.В., Кох С.Н.Травитоника Горного Алтая // Материалы II Всероссийской научной конференции "Геотектоника и геодинамика сейсмоактивных районов", 300-летию Российской академии наук (г. Москва, 22-24 октября 2024 г.) – Изд-во Институт физики Земли им. О.Ю. Шмидта РАН – М. – P. 13-16 – 2024
