scientist, seismology, geophysics, applied mathematics

Curriculum Vitae.

Personal Details

Name Alexander Varypaev Vyacheslavovich

Address Russia, Moscow region, Ramensky district, Il'inskii settlement, October street, 59/1,70.

e-mail ********@*****.***

Age 32

Date of Birth 17 July,1989

Nationality Russian

Gender male

Education

2011 Institute of Electronics and Mathematics, Moscow, Russia. Department of probability and statistics - Master of Science in Applied Mathematics. 2011-2015 Had been studying in graduate school at National Research University Higher School of Economics, department of higher mathematics. Got PhD degree. Dissertation work: «Microseismic source parameter estimation using antenna arrays». Work experience

2010-2014

Junior scientific research assistant in Synapse Science Center, Russia, Moscow.

Developed computational software applied to array signal processing.

Designed complex of modeling programs intended for quality comparison of several surface microseismic monitoring methods in the case of high level real noise.

Processed large amount of data gotten from surface seismic array during hydraulic fracturing.

Developed and implemented several beamforming algorithms that significantly decrease total computational cost and provides simultaneous estimation of microseismic source hypocenter and focal mechanism.

2017-2019

Senior Researcher in Institute of geosphere dynamics RAS, Moscow, Russia. 2019-2022

Senior Researcher in Institute of Earthquake Prediction Theory and Mathematical Geophysics RAS, Moscow, Russia.

Computer Science skills

Advanced scientific computing using C, C++, FORTRAN95 and moderate experience in python v3.5.

PC architecture usage: windows and linux OS.

2D and 3D data visualization tools: gnuplot.

Personal qualities

Quick learning, goodwill, non-confrontational.

Areas of interest

Computational mathematics and its applications.

Probability and mathematical statistics applications.

Array signal processing.

Awards

granted “Quarterly Franklin Membership”, Membership ID #AL49170 given by the editorial board of London Journal Press, UK (2019)

Social links

https://www.scopus.com/authid/detail.uri?authorId=559******** https://orcid.org/0000-0002-4206-9810

Publications

Kushnir A.F, Rozhkov N.M., Varypaev A.V. Statistically-based approach for monitoring of micro-seismic events. // International Journal on Geomathematics. V4. N2. pp. 201-225 .(2013). Springer. ISSN 1869-2672. https://link.springer.com/article/10.1007%2Fs13137-013-0049-6 Kushnir A., Varypaev A., Dricker I., Rozhkov M., Rozhkov N. Passive surface microseismic monitoring as a statistical problem: location of weak microseismic signals in the presence of strongly correlated noise // Geophysical Prospecting. EAGE : Geophysical Division, Blackwell Publishing, (2014). DOI: 10.1111/1365-2478.12124. ISSN: 1365-2478. https://onlinelibrary.wiley.com/doi/10.1111/1365-2478.12124 Kushnir, A., Varypaev, A. Accuracy of adaptive maximum likelihood algorithm for determination of micro earthquake source coordinates using surface array data in condition of strong coherent noise. Int J Geomath 7, 203–237 (2016). https://link.springer.com/article/10.1007/s13137-016-0082-3 Kushnir, A.F, Varypaev, A.V. Robustness of statistical algorithms for location of microseismic sources based on surface array data, Computational Geosciences (2017) 21: 459. https://link.springer.com/article/10.1007/s10596-017-9623-6 Varypaev, A. V., & Kushnir, A. F. (2018). Algorithm of micro-seismic source localization based on asymptotic probability distribution of phase difference between two random stationary Gaussian processes. International Journal of Geomathematics,9(2), 335–358.

https://link.springer.com/article/10.1007/s13137-018-0108-0 Varypaev A., Volosov S., Konstantinovskaya N., Nesterkina M., Kharlamov V., Rybnov Y. (2019) Seismo-acoustic Effects of the Lipetsk Bolide 21.06.2018. Trigger Effects in Geosystems. Springer Proceedings in Earth and Environmental Sciences. Springer

https://link.springer.com/chapter/10.1007/978-3-030-31970-0_63 Varypaev, A., Kushnir, A. Statistical synthesis of phase alignment algorithms for localization of wave field sources. Multidimensional Systems and Signal Processing (2020). https://doi.org/10.1007/s11045-020-00722-3 https://link.springer.com/article/10.1007/s11045-020-00722-3 Varypaev, A.V., Kushnir, A.F. Robust phase algorithms for estimating apparent slowness vectors of seismic waves from regional events. Comput Geosci 26, 115–129 (2022). https://link.springer.com/article/10.1007/s10596-021-10105-7 Presentations

Kushnir A., Rozhkov M., Varypaev A. Evaluating OSI aftershock monitoring efficiency: modeling, simulation, processing, and estimation // Poster at International Conference “Comprehensive Nuclear Test-ban Treaty: Science and Technology”, Hofburg, Vienna, Austria, 8-10 June 2011. Kushnir A.F., Rozhkov M.V., Varypaev A., Dricker I.G. Evaluation of location capabilities of statistically optimal algorithms for microsesimic monitoring // Poster at 74 International Conference of European Association of Geophysics & Engineers, 4-7 June 2012, Copenhagen, Denmark.

Epiphansky A.G., Kushnir A.F., Rozhkov M.V., Rozhkov N.M., Varupaev A.V., Dricker I.G, Hellman S. Enhancement of Surface Array Monitoring of Hydraulic Fracturing Based on Statistically Optimal Algorithms // Presentation at 33-rd General Assembly of European Seismological Commission (ESC), 19 – 24 August 2012, Moscow, Russia. A. Kushnir, M. Rozhkov, A. Varypaev, N. Rojkov, A. Epiphansky, I. Dricker, P. Friberg Comparison of Statistically Optimal Algorithms with Semblance-Based Surface Microseismic Monitoring // Presentation at Microseismic Technology Forum “Evaluating Monitoring Techniques: Downhole, Buried and Surface”, 22-24 January 2013, Napa, CA, USA

I. Dricker, A. Kushnir, M. Rozhkov, A. Varypaev, N. Rojkov, A. Epiphansky, P. Friberg and S. Hellman Optimization of Statistically Optimal (SO) Algorithms for Surface Location of Microseismic Sources with Complex Focal Mechanisms // EAGE Extended Abstract, EarthDoc, 17 March 2013, Netherlands, Amsterdam. Dricker I., Friberg P., Epiphansky A., Kushnir A., Rozhkov M., Varypaev A. Statistically Optimal Technique of Simultaneous Event Location and Focal Mechanism Determination of Weak Microseismicity Using Surface Arrays // extended abstract, Presentation at 82-nd Annual Meeting of Society of Exploration Geophysics (SEG), 4-9 November 2012, Las Vegas, NV, USA. ISSN: 1052-3812.

Varypaev A., Kushnir A., Sanina I., Chulkov A. Revealing the presence of the p-wave generated by weak seismic sources with complex focal mechanism using surface array data 36-th General Assembly of the European Seismological Commission, Malta, 2-7 September, 2018

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