Lawrence Livermore National Laboratory

Michael Pasyanos

Geophysical Event Characterization Task Leader
Geophysical Monitoring Programs

Group Leader, Seismology Group
, Atmospheric, Earth and Energy Division

 +1 925-423-6835

Ph.D. Geophysics
University of California at Berkeley
Sc.B. Geophysics
Brown University

Research Interests

Nuclear explosion monitoring, event identification/discrimination, surface waves, lithospheric structure, attenuation, seismic tomography, stochastic inversion methods.

Selected Publications

Pasyanos, M.E. (2010). Lithospheric thickness modeled from long period surface wave dispersion, Tectonophysics, 481, 38-50, doi:10.1016/j.tecto.2009.02.023.

Myers, S.C., M.L. Begnaud, S. Ballard, M.E. Pasyanos, W.S. Phillips, A.L. Ramirez, M.S, Antolik, K.D. Hutchenson, J.J. Dwyer, C.A. Rowe, and G.S. Wagner (2010), A crust and upper mantle model of Eurasia and North Africa for Pn travel time calculation, in press, Bull. Seism. Soc. Amer.

Pasyanos, M.E. and W.R. Walter (2009). Improvements to regional explosion identification using attenuation models of the lithosphere, Geophys. Res. Lett., 36, L14304, doi:10.1029/2009GL038505.

Pasyanos, M.E., W.R. Walter, and E.M. Matzel (2009). A simultaneous multi-phase approach to determine P-wave and S-wave attenuation of the crust and upper mantle, Bull. Seism. Soc. Amer., 99-6, 3314-3325, DOI: 10.1785/0120090061.

Kgaswane, E.M., A.A. Nyblade, J. Julia, P.H.G.M. Dirks, R.J. Durrheim, and M.E. Pasyanos (2009). Shear wave velocity structure of the lower crust in southern Africa: Evidence for compositional heterogeneity within Archaean and Proterozoic terrains, J. Geophys. Res., 114, B12304, doi:10.1029/2008JB006217.

Ford, S.R., W.S. Phillips, W.R. Walter, M.E. Pasyanos, K. Mayeda, and D.S. Dreger (2009). Attenuation tomography of the Yellow Sea / Korean Peninsula from coda-source normalized and direct Lg amplitudes, Pure and Applied Geophysics, DOI 10.1007/s00024-009-0023-2.

Pasyanos, M.E., E.M. Matzel, W.R. Walter, and A.J. Rodgers (2009), Broadband Lg Attenuation Modeling of the Middle East, Geophys. J. Int., 177, 1166-1176, doi:10.1111/j.1365-246X.2009.04128.x

Zucca, J.J, W.R. Walter, A.J. Rodgers, P. Richards, M.E. Pasyanos, S.C. Myers, T. Lay, D. Harris, and T. Antoun (2009), The prospect of using three-dimensional Earth models to improve nuclear explosion monitoring and ground motion hazard assessment, Seism. Res. Lett., 80, doi:10.1785/gssrl.80.1.31.

Bonner, J., R.B. Herrmann, D. Harkrider, and M. Pasyanos (2008), The surface wave magnitude for the 9 October 2006 North Korean Nuclear Explosion, Bull. Seism. Soc. Amer., 98, 2498-2506, doi: 10.1785/0120080929.

Pasyanos, M.E. and A.A. Nyblade (2007), A top to bottom lithospheric study of Africa and Arabia, Tectonophysics, 444, 27-44, doi:10.1016/j.tecto.2007.07.008.

Pasyanos, M.E H. Tkalcic, R. Gok, A. Al-Enezi, and A.J. Rodgers (2007), Seismic structure of Kuwait, Geophys. J. Int., doi:10.1111/j.1365-246X.2007.03398.x.

Gok, R., M.E. Pasyanos, and E. Zor (2007), Lithospheric structure of the continent-continent collision zone: Eastern Turkey, Geophys. J. Int., doi:10.1111/j.1365-246X.2006.03288.x.

Benoit, M.H., A.A. Nyblade, and M.E. Pasyanos (2006), Crustal thinning between the Ethiopian and East African Plateaus from modeling Rayleigh wave dispersion, Geophys. Res. Lett., 33, L13301, doi:10.1029/2006GL025687.

Tkalcic, H., M.E. Pasyanos, A.J. Rodgers, R. Gok, W.R. Walter, and A. Al-Amri (2006), A multi-step approach in joint modeling of surface wave dispersion and teleseismic receiver functions: Implications for lithospheric structure of the Arabian Peninsula, J. Geophys. Res., 111, B11311, doi:10.1029/2005JB004130.

Pasyanos, M.E., G.A. Franz, and A.L. Ramirez (2006). Reconciling a geophysical model to data using a Markov Chain Monte Carlo algorithm: An application to the Yellow Sea-Korean Peninsula region, J. Geophys. Res., 111, B03313, doi:10.1029/2005JB003851.

Pasyanos, M.E. (2005). A variable-resolution surface wave dispersion study of western Eurasia and North Africa, J. Geophys. Res., 11, B12301, doi:10.1029/2005JB003749.

Pasyanos, M.E., W.R. Walter, M.P. Flanagan, P. Goldstein, and J. Bhattacharyya (2004). Building and testing an a priori geophysical model for Western Eurasia and North Africa, Pure appl. geophys., 161, 235-281.

Pasyanos, M.E., and W.R. Walter (2002). Crust and upper-mantle structure of North Africa, Europe, and the Middle East from inversion of surface waves, Geophys. J. Int., 149, 462-480.

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