Viacheslav Merkin Print


  240-228-1756

  Slava.Merkin@jhuapl.edu

: SES

:   Space physicist

:  Heliophysics

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Degree Field of Study Year Attained Institution Name
PhD Physics 2004 University of Maryland at College Park
MS Physics 1999 Moscow Institute of Physics and Technology
BS Physics and Applied Mathematics 1997 Moscow Institute of Physics and Technology

Dr. Merkin has more than 20 years of extensive experience in numerical modeling of space plasmas, in particular, MHD simulations of the Earth's magnetosphere and the inner heliosphere. Throughout his career, he has contributed to many areas of space plasma research, including the physics of the strongly driven magnetosphere, magnetopause boundary instabilities, magnetotail stability and reconnection, particle acceleration, and heliospheric magnetic structure among others. His current scientific interests include understanding and describing the collective behavior of the disparate domains of geospace, particularly, during storm time. Dr. Merkin holds a Principal Staff Scientist position at JHU/APL and a Visiting Scientist position at NCAR/HAO. He has been the supervisor of the Theory and Modeling Section at JHU/APL since 2015. 

 

 
AGU Index Category AGU Index Sub-Category
MAGNETOSPHERIC PHYSICS Solar wind/magnetosphere interactions
SPACE PLASMA PHYSICS MHD waves and instabilities
SPACE WEATHER Models
INTERPLANETARY PHYSICS Corotating streams
INTERPLANETARY PHYSICS Coronal mass ejections
MAGNETOSPHERIC PHYSICS Magnetotail
MAGNETOSPHERIC PHYSICS Magnetic storms and substorms
SPACE PLASMA PHYSICS Kinetic and MHD theory
SPACE WEATHER Magnetic storms
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Start Year End Year Description
2020 Current Visiting Scientist, High Altitude Observatory, National Center for Atmospheric Research
2019 Current Principal Professional Staff, The Johns Hopkins University Applied Physics Laboratory
2015 Current Theory and Modeling Section Supervisor, The Johns Hopkins University Applied Physics Laboratory
2010 2019 Senior Professional Staff II, The Johns Hopkins University Applied Physics Laboratory
2007 2010 Senior Research Associate/Scientist, Astronomy Department, Boston University
2004 2007 Research Associate, Astronomy Department, Boston University
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The following publication information was downloaded from

ORCID logo https://orcid.org/0000-0003-4344-5424

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Binzheng Zhang, Peter A. Delamere, Zhonghua Yao, Bertrand Bonfond, D. Lin, Kareem A. Sorathia, Oliver J. Brambles, William Lotko, Jeff S. Garretson, Viacheslav G. Merkin, Denis Grodent, William R. Dunn, John G. Lyon, (2021), How Jupiter’s unusual magnetospheric topology structures its aurora, Science Advances

K. M. Laundal, J. H. Yee, V. G. Merkin, J. W. Gjerloev, H. Vanhamäki, J. P. Reistad, M. Madelaire, K. Sorathia, P. J. Espy, (2021), Electrojet Estimates From Mesospheric Magnetic Field Measurements, Journal of Geophysical Research: Space Physics , 126, 5, https://doi.org/10.1029/2020ja028644

K. A. Sorathia, V. G. Merkin, E. V. Panov, B. Zhang, J. G. Lyon, J. Garretson, A. Y. Ukhorskiy, S. Ohtani, M. Sitnov, M. Wiltberger, (2020), Ballooning-Interchange Instability in the Near-Earth Plasma Sheet and Auroral Beads: Global Magnetospheric Modeling at the Limit of the MHD Approximation, Geophysical Research Letters , 47, 14, https://doi.org/10.1029/2020gl088227

G. K. Stephens, S. T. Bingham, M. I. Sitnov, M. Gkioulidou, V. G. Merkin, H. Korth, N. A. Tsyganenko, A. Y. Ukhorskiy, (2020), Storm Time Plasma Pressure Inferred From Multimission Measurements and Its Validation Using Van Allen Probes Particle Data, Space Weather , 18, 12, https://doi.org/10.1029/2020sw002583

Sitnov, MI and Stephens, GK and Tsyganenko, NA and Korth, H and Roelof, EC and Brandt, PC and Merkin, VG and Ukhorskiy, AY, (2020), Reconstruction of extreme geomagnetic storms: Breaking the data paucity curse, Space Weather, e2020SW002561

Dong Lin, Wenbin Wang, Wayne A. Scales, Kevin Pham, Jing Liu, Binzheng Zhang, Viacheslav Merkin, Xueling Shi, Bharat Kunduri, Maimaitirebike Maimaiti, (2019), SAPS in the 17 March 2013 Storm Event: Initial Results From the Coupled Magnetosphere-Ionosphere-Thermosphere Model, Journal of Geophysical Research: Space Physics , 124, 7, 6212--6225, https://doi.org/10.1029/2019ja026698

M. I. Sitnov, G. K. Stephens, N. A. Tsyganenko, Y. Miyashita, V. G. Merkin, T. Motoba, S. Ohtani, K. J. Genestreti, (2019), Signatures of Nonideal Plasma Evolution During Substorms Obtained by Mining Multimission Magnetometer Data, Journal of Geophysical Research: Space Physics , 124, 11, 8427--8456, https://doi.org/10.1029/2019ja027037

Zhang, Binzheng and Sorathia, Kareem A and Lyon, John G and Merkin, Viacheslav G and Wiltberger, Michael, (2019), Conservative averaging-reconstruction techniques (Ring Average) for 3-D finite-volume MHD solvers with axis singularity, Journal of Computational Physics, 376, 276--294

Sitnov, Mikhail and Birn, Joachim and Ferdousi, Banafsheh and Gordeev, Evgeny and Khotyaintsev, Yuri and Merkin, Viacheslav and Motoba, Tetsuo and Otto, Antonius and Panov, Evgeny and Pritchett, Philip and others, (2019), Explosive magnetotail activity, Space science reviews, 215, 4, 1--95

Merkin, VG and Panov, EV and Sorathia, KA and Ukhorskiy, A, (2019), Contribution of bursty bulk flows to the global dipolarization of the magnetotail during an isolated substorm, Journal of Geophysical Research: Space Physics, 124

Robinson, Robert and Zhang, Yongliang and Garcia-Sage, Katherine and Fang, Xiaohua and Verkhoglyadova, Olga P and Ngwira, Chigomezyo and Bingham, Suzy and Kosar, Burcu and Zheng, Yihua and Kaeppler, Stephen and others, (2019), Space weather modeling capabilities assessment: Auroral precipitation and high-latitude ionospheric electrodynamics, Space Weather, 17, 2, 212--215

Sorathia, KA and Merkin, VG and Ukhorskiy, AY and Allen, RC and Nykyri, K and Wing, S, (2019), Solar Wind Ion Entry Into the Magnetosphere During Northward IMF, Journal of Geophysical Research: Space Physics, 124, 5461--5481

Zhang, Binzheng and Sorathia, Kareem A and Lyon, John G and Merkin, Viacheslav G and Garretson, Jeffrey S and Wiltberger, Michael, (2019), GAMERA: A three-dimensional finite-volume MHD solver for non-orthogonal curvilinear geometries, The Astrophysical Journal Supplement Series, 244, 1, 20

A. Y. Ukhorskiy, K. A. Sorathia, V. G. Merkin, M. I. Sitnov, D. G. Mitchell, M. Gkioulidou, (2018), Ion Trapping and Acceleration at Dipolarization Fronts: High-Resolution MHD and Test-Particle Simulations, Journal of Geophysical Research: Space Physics , 123, 7, 5580--5589, https://doi.org/10.1029/2018ja025370

Birn, J and Merkin, VG and Sitnov, MI and Otto, A, (2018), MHD stability of magnetotail configurations with a Bz hump, Journal of Geophysical Research: Space Physics, 123, 5, 3477--3492

Sergeev, VA and Gordeev, EI and Merkin, VG and Sitnov, MI, (2018), Does a local B-minimum appear in the tail current sheet during a substorm growth phase?, Geophysical Research Letters, 45, 6, 2566--2573

Ukhorskiy, AY and Sorathia, KA and Merkin, VG and Sitnov, MI and Mitchell, DG and Gkioulidou, M, (2018), Ion Trapping and Acceleration at Dipolarization Fronts: High-Resolution MHD/Test-Particle Simulations, Journal of Geophysical Research: Space Physics

Sitnov, MI and Merkin, VG and Roytershteyn, V and Swisdak, M, (2018), Kinetic dissipation around a dipolarization front, Geophysical Research Letters, 45, 10, 4639--4647

Zhang, B and Delamere, PA and Ma, X and Burkholder, B and Wiltberger, M and Lyon, JG and Merkin, VG and Sorathia, KA, (2018), Asymmetric Kelvin-Helmholtz instability at Jupiter's magnetopause boundary: Implications for corotation-dominated systems, Geophysical Research Letters, 45, 1, 56--63

Sorathia, Kareem A and Ukhorskiy, Aleksandr Y and Merkin, Viacheslav G and Fennell, Joseph F and Claudepierre, Seth G, (2018), Modeling the Depletion and Recovery of the Outer Radiation Belt During a Geomagnetic Storm: Combined MHD and Test Particle Simulations, Journal of Geophysical Research: Space Physics

Wiltberger, M and Rigler, EJ and Merkin, V and Lyon, JG, (2017), Structure of high latitude currents in magnetosphere-ionosphere models, Space Science Reviews, 206, 1-4, 575--598

Anderson, Brian J and Korth, Haje and Welling, Daniel T and Merkin, Viacheslav G and Wiltberger, Michael J and Raeder, Joachim and Barnes, Robin J and Waters, Colin L and Pulkkinen, Antti A and Rastaetter, Lutz, (2017), Comparison of predictive estimates of high-latitude electrodynamics with observations of global-scale Birkeland currents, Space Weather, 15, 2, 352--373

Wiltberger, M and Merkin, V and Zhang, B and Toffoletto, F and Oppenheim, M and Wang, W and Lyon, JG and Liu, J and Dimant, Y and Sitnov, MI and others, (2017), Effects of electrojet turbulence on a magnetosphere-ionosphere simulation of a geomagnetic storm, Journal of Geophysical Research: Space Physics, 122, 5, 5008--5027

Gordeev, E and Sergeev, V and Tsyganenko, N and Kuznetsova, M and Rast"aetter, L and Raeder, J and Toth, G and Lyon, J and Merkin, V and Wiltberger, M, (2017), The substorm cycle as reproduced by global MHD models, Space Weather, 15, 1, 131--149

Ukhorskiy, AY and Sitnov, MI and Merkin, VG and Gkioulidou, M and Mitchell, DG, (2017), Ion acceleration at dipolarization fronts in the inner magnetosphere, Journal of Geophysical Research: Space Physics, 122, 3, 3040--3054

Cassak, PA and Genestreti, KJ and Burch, James L and Phan, T-D and Shay, MA and Swisdak, M and Drake, JF and Price, L and Eriksson, S and Ergun, RE and others, (2017), The effect of a guide field on local energy conversion during asymmetric magnetic reconnection: Particle-in-cell simulations, Journal of Geophysical Research: Space Physics, 122, 11, 11--523

Sitnov, MI and Merkin, VG and Pritchett, PL and Swisdak, M, (2017), Distinctive features of internally driven magnetotail reconnection, Geophysical Research Letters, 44, 7, 3028--3037

Wang, Chih-Ping and Merkin, VG and Angelopoulos, Vassilis, (2017), Mesoscale perturbations in midtail lobe/mantle during steady northward IMF: ARTEMIS observation and MHD simulation, Journal of Geophysical Research: Space Physics, 122, 6, 6430--6441

Sorathia, KA and Merkin, VG and Ukhorskiy, AY and Mauk, BH and Sibeck, DG, (2017), Energetic Particle Loss Through the Magnetopause: A Combined Global MHD and Test-Particle Study, Journal of Geophysical Research: Space Physics

Gordeev, Evgeny and Sergeev, Victor and Merkin, Vyacheslav and Kuznetsova, Maria, (2017), On the origin of plasma sheet reconfiguration during the substorm growth phase, Geophysical Research Letters, 44

Liu, Jing and Wang, Wenbin and Oppenheim, Meers and Dimant, Yakov and Wiltberger, Michael and Merkin, Slava, (2016), Anomalous electron heating effects on the E region ionosphere in TIEGCM, Geophysical Research Letters, 43, 6, 2351--2358

Merkin, VG and Kondrashov, D and Ghil, M and Anderson, BJ, (2016), Data assimilation of low-altitude magnetic perturbations into a global magnetosphere model, Space Weather, 14, 2, 165--184

Anderson, B. J. and Russell, C. T. and Strangeway, R. J. and Plaschke, F. and Magnes, W. and Fischer, D. and Korth, H. and Merkin, V. G. and Barnes, R. J. and Waters, C. L. and others, (2016), Electrodynamic Context of Magnetopause Dynamics Observed by Magnetospheric Multiscale, Geophys. Res. Lett., 43

Sitnov, M. I. and Merkin, V.G. and Raeder, J., (2016), Great mysteries of the Earth’s magnetotail, Eos, 97

Merkin, VG and Lyon, JG and Lario, D and Arge, CN and Henney, CJ, (2016), Time-dependent magnetohydrodynamic simulations of the inner heliosphere, Journal of Geophysical Research: Space Physics, 121, 4, 2866--2890

Merkin, VG and Sitnov, MI, (2016), Stability of magnetotail equilibria with a tailward Bz gradient, Journal of Geophysical Research: Space Physics, 121, 10, 9411--9426

Sitnov, MI and Merkin, VG, (2016), Generalized magnetotail equilibria: Effects of the dipole field, thin current sheets, and magnetic flux accumulation, Journal of Geophysical Research: Space Physics, 121, 8, 7664--7683

Takahashi, Kazue and Lee, Dong-Hun and Merkin, Viacheslav G and Lyon, John G and Hartinger, Michael D, (2016), On the origin of the dawn-dusk asymmetry of toroidal Pc5 waves, Journal of Geophysical Research: Space Physics, 121, 10, 9632--9650

Merkin, VG and Lionello, R and Lyon, JG and Linker, J and T"or"ok, T and Downs, C, (2016), Coupling of coronal and heliospheric magnetohydrodynamic models: Solution comparisons and verification, The Astrophysical Journal, 831, 1, 23

Samsonov, AA and Gordeev, E and Tsyganenko, NA and Safrankova, J and Nemecek, Z and Simuunek, J and Sibeck, DG and Toth, G and Merkin, VG and Raeder, J, (2016), Do we know the actual magnetopause position for typical solar wind conditions?, Journal of Geophysical Research: Space Physics, 121, 7, 6493--6508

Merkin, VG and Sitnov, MI and Lyon, JG, (2015), Evolution of generalized two-dimensional magnetotail equilibria in ideal and resistive MHD, Journal of Geophysical Research: Space Physics, 120, 3, 1993--2014

Wiltberger, Merkin and Merkin, V and Lyon, JG and Ohtani, S, (2015), High-resolution global magnetohydrodynamic simulation of bursty bulk flows, Journal of Geophysical Research: Space Physics, 120, 6, 4555--4566

Garcia-Sage, K and Moore, TE and Pembroke, A and Merkin, VG and Hughes, WJ, (2015), Modeling the effects of ionospheric oxygen outflow on bursty magnetotail flows, Journal of Geophysical Research: Space Physics, 120, 10, 8723--8737

Xi, S and Lotko, W and Zhang, B and Brambles, OJ and Lyon, JG and Merkin, VG and Wiltberger, M, (2015), Poynting flux-conserving low-altitude boundary conditions for global magnetospheric models, Journal of Geophysical Research: Space Physics, 120, 1, 384--400

Sitnov, MI and Merkin, VG and Swisdak, M and Motoba, T and Buzulukova, N and Moore, TE and Mauk, BH and Ohtani, S, (2014), Magnetic reconnection, buoyancy, and flapping motions in magnetotail explosions, Journal of Geophysical Research: Space Physics, 119, 9, 7151--7168

Anderson, BJ and Korth, H and Waters, CL and Green, DL and Merkin, VG and Barnes, RJ and Dyrud, LP, (2014), Development of large-scale Birkeland currents determined from the Active Magnetosphere and Planetary Electrodynamics Response Experiment, Geophysical Research Letters, 41, 9, 3017--3025

Ohtani, S and Wing, S and Merkin, VG and Higuchi, T, (2014), Solar cycle dependence of nightside field-aligned currents: Effects of dayside ionospheric conductivity on the solar wind-magnetosphere-ionosphere coupling, Journal of Geophysical Research: Space Physics, 119, 1, 322--334

Merkin, VG and Anderson, BJ and Lyon, JG and Korth, H and Wiltberger, M and Motoba, T, (2013), Global evolution of Birkeland currents on 10 min timescales: MHD simulations and observations, Journal of Geophysical Research: Space Physics, 118, 8, 4977--4997

Merkin, VG and Lyon, JG and Claudepierre, SG, (2013), Kelvin-Helmholtz instability of the magnetospheric boundary in a three-dimensional global MHD simulation during northward IMF conditions, Journal of Geophysical Research: Space Physics, 118, 9, 5478--5496

Ukhorskiy, AY and Sitnov, MI and Merkin, VG and Artemyev, AV, (2013), Rapid acceleration of protons upstream of earthward propagating dipolarization fronts, Journal of Geophysical Research: Space Physics, 118, 8, 4952--4962

Sitnov, MI and Buzulukova, N and Swisdak, M and Merkin, VG and Moore, TE, (2013), Spontaneous formation of dipolarization fronts and reconnection onset in the magnetotail, Geophysical research letters, 40, 1, 22--27

Pembroke, Asher and Toffoletto, Frank and Sazykin, Stanislav and Wiltberger, Michael and Lyon, John and Merkin, Viacheslav and Schmitt, Peter, (2012), Initial results from a dynamic coupled magnetosphere-ionosphere-ring current model, Journal of Geophysical Research: Space Physics, 117, A2

Pahud, DM and Merkin, VG and Arge, CN and Hughes, WJ and McGregor, SM, (2012), An MHD simulation of the inner heliosphere during Carrington rotations 2060 and 2068: Comparison with MESSENGER and ACE spacecraft observations, Journal of atmospheric and solar-terrestrial physics, 83, 32--38

Subbotin, DA and Shprits, YY and Gkioulidou, M and Lyons, LR and Ni, B and Merkin, VG and Toffoletto, FR and Thorne, RM and Horne, Richard B and Hudson, MK, (2011), Simulation of the acceleration of relativistic electrons in the inner magnetosphere using RCM-VERB coupled codes, Journal of Geophysical Research: Space Physics, 116, A8

Merkin, VG, (2011), Effects of ionospheric O+ on the magnetopause boundary wave activity, AIP Conference Proceedings, 1320, 1, 208--212

Lopez, Ramon E and Merkin, VG and Lyon, JG, (2011), The role of the bow shock in solar wind-magnetosphere coupling, Annales Geophysicae, 29, 6, 1129--1135

Merkin, VG and Lyon, JG and McGregor, SL and Pahud, DM, (2011), Disruption of a heliospheric current sheet fold, Geophysical research letters, 38, 14

Wiltberger, M and Lotko, W and Lyon, JG and Damiano, P and Merkin, V, (2010), Influence of cusp O+ outflow on magnetotail dynamics in a multifluid MHD model of the magnetosphere, Journal of Geophysical Research: Space Physics, 115, A10

Merkin, VG and Lyon, JG, (2010), Effects of the low-latitude ionospheric boundary condition on the global magnetosphere, Journal of Geophysical Research: Space Physics, 115, A10

Garcia, KS and Merkin, VG and Hughes, WJ, (2010), Effects of nightside O+ outflow on magnetospheric dynamics: Results of multifluid MHD modeling, Journal of Geophysical Research: Space Physics, 115, A12

Lopez, RE and Bruntz, R and Mitchell, EJ and Wiltberger, M and Lyon, JG and Merkin, VG, (2010), Role of magnetosheath force balance in regulating the dayside reconnection potential, Journal of Geophysical Research: Space Physics, 115, A12

Pulkkinen, Tuija I and Palmroth, Minna and Koskinen, Hannu EJ and Laitinen, Tiera V and Goodrich, CC and Merkin, VG and Lyon, JG, (2010), Magnetospheric modes and solar wind energy coupling efficiency, Journal of Geophysical Research: Space Physics, 115, A3

Lopez, RE and Lyon, JG and Mitchell, E and Bruntz, R and Merkin, VG and Brogl, S and Toffoletto, F and Wiltberger, M, (2009), Why doesn't the ring current injection rate saturate?, Journal of Geophysical Research: Space Physics, 114, A2

Guild, Timothy B and Spence, Harlan E and Kepko, E Larry and Merkin, Viacheslav and Lyon, John G and Wiltberger, Michael and Goodrich, Charles C, (2008), Geotail and LFM comparisons of plasma sheet climatology: 1. Average values, Journal of Geophysical Research: Space Physics, 113, A4

Merkin, VG and Crooker, NU, (2008), Solar concept of flux transport by interchange reconnection applied to the magnetosphere, Journal of Geophysical Research: Space Physics, 113, A9

Guild, Timothy B and Spence, Harlan E and Kepko, E Larry and Merkin, Viacheslav and Lyon, John G and Wiltberger, Michael and Goodrich, Charles C, (2008), Geotail and LFM comparisons of plasma sheet climatology: 2. Flow variability, Journal of Geophysical Research: Space Physics, 113, A4

Goodrich, CC and Pulkkinen, TI and Lyon, JG and Merkin, VG, (2007), Magnetospheric convection during intermediate driving: Sawtooth events and steady convection intervals as seen in Lyon-Fedder-Mobarry global MHD simulations, Journal of Geophysical Research: Space Physics, 112, A8

Merkin, VG and Owens, MJ and Spence, Harlan E and Hughes, WJ and Quinn, JM, (2007), Predicting magnetospheric dynamics with a coupled Sun-to-Earth model: Challenges and first results, Space Weather, 5, 12

Merkin, VG and Goodrich, CC, (2007), Does the polar cap area saturate?, Geophysical research letters, 34, 9

Merkin, VG and Lyon, JG and Anderson, BJ and Korth, H and Goodrich, CC and Papadopoulos, K, (2007), A global MHD simulation of an event with a quasi-steady northward IMF component, Annales Geophysicae, 25, 6, 1345--1358

Owens, Mathew James and Merkin, VG and Riley, P, (2006), A kinematically distorted flux rope model for magnetic clouds, Journal of Geophysical Research: Space Physics, 111, A3

Merkin, VG and Sharma, AS and Papadopoulos, K and Milikh, G and Lyon, J and Goodrich, C, (2005), Global MHD simulations of the strongly driven magnetosphere: Modeling of the transpolar potential saturation, Journal of Geophysical Research: Space Physics, 110, A9

Merkin, VG and Milikh, G and Papadopoulos, K and Lyon, J and Dimant, YS and Sharma, AS and Goodrich, C and Wiltberger, M, (2005), Effect of anomalous electron heating on the transpolar potential in the LFM global MHD model, Geophysical research letters, 32, 22

Merkin, VG and Sharma, AS and Papadopoulos, K and Milikh, G and Lyon, J and Goodrich, C, (2005), Relationship between the ionospheric conductance, field aligned current, and magnetopause geometry: Global MHD simulations, Planetary and Space Science, 53, 9, 873--879

Guild, Timothy and Goodrich, Charles and Merkin, Viacheslav and Lyon, John, (2005), Building a 3D Hall MHD model using the Overture framework, Proceedings of ISSS, 7, 26--31

Merkin, VG and Sharma, AS and Papadopoulos, K and Milikh, G and Lyon, J and Goodrich, C, (2005), Erratum to “Relationship between the ionospheric conductance, field aligned current, and magnetopause geometry: Global MHD simulations”.[Planetary Space Sci.(2005) 873 879], Planetary and Space Science, 53, 11, 1201--1201

Merkine, VG and Papadopoulos, K and Milikh, G and Sharma, AS and Shao, X and Lyon, J and Goodrich, C, (2003), Effects of the solar wind electric field and ionospheric conductance on the cross polar cap potential: Results of global MHD modeling, Geophys. Res. Lett, 30, 23, 2180

Budnikov, E Yu and Maksimychev, AV and Kolyubin, AV and Merkin, VG and Timashev, SF, (1999), Wavelet-analysis applied to the study of the nature of a boundary current in an electrochemical system with a cation-exchange membrane, ZHURNAL FIZICHESKOI KHIMII, 73, 2, 198--213