Deep earth structure and dynamics using seismological tools. Earthquake processes and scaling laws. Real time estimation of earthquake parameters. Development of modern broadband seismic and geophysical observatories on land and in the oceans. Planetary seismology.

Recent Publications

2025

  • Chao, L., B. Romanowicz, L. Zhao and Y. Masson (2025) Efficient hybrid numerical modeling of the seismic wavefield in the presence of solid-fluid boundaries, Nat. Comm., in press.

2024

  • Munch, F., B. Romanowicz, S. Mukhopadhyay and M. Rudolph (2024) Deep mantle plumes feeding periodic alignments of asthenospheric fingers beneath the central and southern Atlantic Ocean, PNAS, 121, 46, e2407543121. https://doi.org/10.1073/pnas.2407543121

  • Panet, I., M. Greff-Lefftz and B. Romanowicz (2024) Partial Melt in Mesoscale Upper Mantle Upwellings beneath Ocean Basins, EPSL, 639, 118763. https://doi.org/10.1016/j.epsl.2024.118763

  • Masson, Y., C. Lyu, P. Moczo, Y. Capdeville, B. Romanowicz and J. Virieux (2024) 2-D seismic wave propagation using the distributional finite-difference method: further developments and potential for global seismology, Geophys. J. Int., 237, 339-363. https://doi.org/10.1093/gji/ggae025

  • Lyu, C., Y. Masson, L. Zhao and B. Romanowicz (2024) Introduction to the Distributional Finite Difference Method for 3D Seismic Wave Propagation and Comparison With the Spectral Element Method, J. Geophys. Res., Solid Earth, 129, e2023JB027576. https://doi.org/10.1029/2023JB027576

  • Chen, L-W. and B. Romanowicz (2024) On accounting for the effects of crust and uppermost mantle structure in global scale full-waveform inversion (2024), Geophys. J. Int., 239, 662–674. https://doi.org/10.1093/gji/ggae282

  • Chen, L.-W. and B. Romanowicz (2024) Accelerating full-waveform inversion using source stacking followed by cross-correlation: synthetic experiments at the global scale in a realistic earth model, Geophys. J. Int., 236, 644-658. https://doi.org/10.1093/gji/ggad438

  • Fichtner, A., B. Kennett,V.C. Tsai, C. H. Thurber… B. Romanowicz…et al. (2024) Seismic Tomography 2024, Bull. Seism. Soc. Amer., 114,1185-1213. https://doi.org/10.1785/0120230229

2023

  • Wamba, M., J.-P. Montagner and B. Romanowicz (2023) Imaging deep-mantle plumbing beneath La Réunion and Comores hot spots: Vertical plume conduits and horizontal ponding zones, Sci. Adv. 9, eade3723. https://doi.org/10.1126/sciadv.ade3723

  • Romanowicz, B., R. Allen, K. Brekke, L-W Chen, Y. Gou, I. Henson, J. Marty et al. (2023) SeaFOAM: A Year long DAS Deployment in Monterey Bay, California, Seism. Res. Lett., XX, 1–12. https://doi.org/10.1785/0220230047

  • Romanowicz, B. (2023) Global Seismic Tomography Using Time Domain Waveform Inversion, in “Applications of Data Assimilation and Inverse Problems in the Earth Sciences”, Ed. A. Ismail-Zadeh, Cambridge U. Press, chapter 14, p 220-234.

  • Cathles, L., W. Fjeldskar, A. Lenardic, B. Romanowicz, J. Seales & M. Richards (2023) Influence of the asthenosphere on earth dynamics and evolution, Sci. Rep., 13:13367. https://doi.org/10.1038/s41598-023-39973-y

2022

  • Moulik, P., V. Lekic, B. Romanowicz et al. (2022) Global reference seismological data sets: multimode surface wave dispersion, Geophys. J. Int., 228, 1808-1849.

  • Bao, X., C. R. Lithgow-Bertelloni, M. G. Jackson and B. Romanowicz (2022) On the relative temperatures of Earth’ volcanic hotspots and mid-ocean ridges, Science, 375, 57-61.

  • Panet, I., M. Greff-Lefftz and B. Romanowicz (2022) Dense mantle flows periodically spaced below ocean basins, Earth and Planet. Res. Lett., 594 (2022) 117745

  • Adourian, S., C. Lyu, Y. Masson, F. Munch and B. Romanowicz (2022) Combining different 3D global and regional seismic wave propagation solvers towards box tomography in the deep Earth, Geophys. J. Int. 232, 1340–1356

2021

  • Frost, D. A. and B. Romanowicz (2021) Effects of upper mantle structure beneath Alaska on core wave absolute and differential measurements: implications for estimates of inner core anisotropy, Phys. Earth Planet. Inter., 314, 106713.

  • Frost, D. A., B. Romanowicz, M. Lasbleis and B. Chandler (2021) Dynamic history of the inner core constrained by seismic anisotropy, Nature Geosc. https://doi.org/10.1038/s41561-021-00761-w

  • Romanowicz, B. (2021) Surface waves, Encyclopedia of Solid Earth, Springer Intern. Pubsl., pp 1738-1750.

  • Lau, H.C.P. and B. Romanowicz (2021) Constraining Jumps in Density and Elastic Properties at the 660 km discontinuity Using Normal Mode Data via the Backus-Gilbert Method, Geophys. Res. Lett., 48, e2020GL092217. https://doi.org/10.1029/2020GL092217

  • Wamba, M., J. P. Montagner, B. Romanowicz, G. Barruol (2021) Multi-mode waveform tomography of the Upper and MId-Mantle around the Réunion Hotspot, J. Geophys. Res., Solid Earth, 126, e2020JB021490

  • Chandler, B. C., L. Chen, M. Li, R. Wenk and B. Romanowicz (2021) Seismic anisotropy, dominant slip systems and phase transitions in the lowermost mantle, Geophys. J. Int., 227, 1665-1681.

  • Robson, A., H. Lau, P. Koelemeijer and B. Romanowicz (2021) An analysis of core-matle boundary Stoneley mode sensitivity and sources of uncertainty, Phys. Earth Planet. Inter., 228, 1962-1974.

  • Romanowicz, B. A. (2021) Seismic Tomography of the Earth’s mantle, in, Encyclopedia of Geology, Elsevier Pub., pp 597-608.

  • Koppers, A. P., T. W. Becker, M. G. Jackson, K. Konrad, R. D. Müller, B. Romanowicz, B. Steinberger, J. M. Whittaker (2021) Mantle plumes and their role in Earth processes, Nature Rev., Earth and Environment. https://doi.org/10.1038/s43017-021-00168-6

2020

  • Romanowicz, B., L-W Chen and S. W. French (2020), Accelerating full waveform inversion via source stacking and cross-correlations, Geophys. J. Int., 220, 308-322. https://doi.org/10.1093/gji/ggz437

  • Frost, D. A., B. Romanowicz and S. Roecker (2020) Upper mantle slab under Alaska: contribution to anomalous core-phase observations on south-Sandwich to Alaska path, Phys. Earth. Planet. Inter., 299, 106427.

  • Davaille, A., and B. Romanowicz (2020) Deflating the LLSVPs: bundles of mantle thermochemical plumes, rather than thick “stagnant” piles, Tectonics, 39, e2020TC006265. https://doi.org/10.1029/2020TC006265

  • Kohler, M., K. Hafner, J. Park, J. C.E Irving, J. Caplan_Auerbach, J. Collins, J. Berger, A. M. Tréhu, B. Romanowicz and R. L. Woodward (2020) A plan for a Long-Term, Automated, broadband seismic monitoring network on the Global Seafloor, Seism. Res. Lett., 91, 1343-1355. https://doi.org/10.1785/0220190123

2019

  • Frost, D. A. and B. Romanowicz (2019) On the orientation of the fast and slow directions of anisotropy in the deep inner core, Phys. Earth Planet. Inter., 286, 101-110. https://doi.org/10.1016/j.pepi.2018.11.006

  • Maurya, S., T. Taira and B. Romanowicz (2019) Location of seismic “hum” sources following storms in the north Pacific ocean, G-Cubed, 20, 1454-1467. https://doi.org/10.1029/2018GC008112

  • Williams, C. D., S. Mukhopadhyay, M. Rudolph and B. A. Romanowicz (2019) Primitive Helium is Sourced from Seismically Slow regions in the lowermost mantle, G-Cubed. https://doi.org/10.1029/2019GC008437

  • Robson, A and B. Romanowicz (2019) New normal mode constraints on bulk inner core velocities and density Research Paper, Phys. Earth Planet. Inter., 295, 106310.

2018

  • Karaoglu, H. and B. Romanowicz (2018) Inferring global Upper-Mantle Shear Attenuation structure by waveform tomography using the Spectral Element Method, Geophys. J. Int., 213, 1536-1558.

  • Clouzet, P., Y. Masson and B. Romanowicz (2018) Box tomography: first application to the imaging of upper mantle shear velocity and radial anisotropy structure beneath the north American continent, Geophys. J. Int., 213, 1849-1875. https://doi.org/10.1093/gji/ggy078

  • Ibourichène, A. and B. Romanowicz (2018) Detection of small schale heterogeneities at the Inner Core Boundary, Phys. Earth Planet. Inter., 281, 55-67.

  • Smit, P. B., T. T. Janssen, T.H.C. Herbers, T. Taira and B. A. Romanowicz (2018) Infragravity wave radiation across the shelf break, J. Geophys. Res. (Oceans), 123. https://doi.org/10.1029/2018JC013986

  • Romanowicz, B. (2018) A deep earthquake puzzle resolved, N&V, Nature Geosc.

  • Garber, J., S. Maurya, J.-A. Hernandez, M.S. Duncan, L. Zheng, H. L. Zhang, U. Faul, C. McCammon, J. P. Montagner, L. Moresi, B. Romanowicz, R. L. Rudnick and L. Stixrude (2018) Multidisciplinary Constraints on the Abundance of Diamond and Eclogite in the Cratonic Lithosphere, G-Cubed. https://doi.org/10.1029/2018GC007534

  • Chandler, B., K. Yuan, M. Li, S. Cottaar, B. Romanowicz, C. N. Tomé and H. R. Wenk (2018) A refined approach to model anisotropy in the lowermost mantle, IOP Conf. Ser.: Mater. Sci. Eng., 375, 012002, ICOTOM-18. https://doi.org/10.1088/1757-899X/375/1/012002

2017

  • Masson, Y. and B. Romanowicz (2017) Fast computation of synthetic seismograms within a medium containing remote localized perturbations A numerical solution to the scattering problem, Geophys. J. Int., 208(2), 674-692.

  • Romanowicz, B. and R. Wenk (2017) Anisotropy in the Deep Earth, Phys. Earth Planet. Inter., 269, 58-90. https://doi.org/10.1016/j.pepi.2017.05.005

  • Masson, Y. and B. Romanowicz (2017) Box Tomography: Localised imaging of remote targets buried in an unknown medium, a step forward for understanding key structures in the deep Earth, Geophys. J. Int., 211, 141-163. https://doi.org/10.1093/gji/ggx141

  • Romanowicz, B., M. Hirschmann, L. Kellogg, M. Manga, S. Mukhopadhyay, B. Buffett (2017) Advancing Geoscience Research through CIDER, GSA Today, v. 27. https://doi.org/10.1130/GSATG329GW.1

  • Yuan, K. and B. Romanowicz (2017) Seismic evidence for partial melting at the root of Major Hotspot Plumes, Science, 357, 393-397. https://doi.org/10.1126/science.aan0760

  • Karaoglu, H. and B. Romanowicz (2017) Full Waveform Inversion for Global Attenuation Imaging: A Comparative Assessment of Several Different Approaches, Geophys. J. Int., 212, 807–826

  • Adam, J., A. Ibourichène, and B. Romanowicz (2017) Observation of core sensitive phases: constraints on the velocity and attenuation profile in the vicinity of the inner-core boundary, Phys. Earth Planet. Inter., 275, 19-31.

  • Roy, C. and B. Romanowicz (2017) On the implications of a-priori constraints in transdimensional Bayesian inversion for continental lithospheric layering, J. Geophys. Res., 122. https://doi.org/10.1002/2017JB014968

  • Frost, D. A. and B. Romanowicz (2017) Constraints on inner core anisotropy from observations of P’P’, Geophys. Res. Lett., 44. https://doi.org/10.1002/2017GL075049

  • Romanowicz, B. (2017) The buoyancy of Earth’s deep mantle, N&V, Nature, 551, 308-309.

2016

  • Romanowicz, B., A. Cao, B. Godwal, R. Wenk, R. Jeanloz and S. Ventosa (2016) Seismic anisotropy in the Earth’s innermost inner core: testing structural models against mineral physics predictions Geophys. Res. Lett., 43, 93-100.

  • Bodin, T., J. Leiva, B. Romanowicz, V. Maupin, and H. Yuan (2016) Imaging Anisotropic Layering with Bayesian Inversion of Multiple Data Types, Geophys. J. Int., 206, 605-629.

  • To, A., Y. Capdeville and B. Romanowicz (2016) Anomalously low amplitude of S waves produced by the 3D structures in the lower mantle, Phys. Earth Planet. Inter., 256, 26-36.

  • Caló, M., T. Bodin and B. Romanowicz (2016) Layered structure in the upper mantle across north America from inversion of long and short period seismic data, Earth Planet. Sci. Lett., 449, 164-175. https://doi.org/10.1016/j.epsl.2016.05.054

2015

  • Meschede, M. and B. Romanowicz (2015) Lateral heterogeneity scales in regional and global upper mantle shear velocity models, Geophys. J. Int, 200, 1078-1095.

  • Weber, M., C. Wicks, Y. LeStunff, B. Romanowicz and F. Krüger (2015) Seismic evidence for a steeply dipping reflector -stagnant slab in the mantle transition zone, Geophys. J. Int., 200, 1237-1253.

  • Bodin, T., Y. Capdeville, B. Romanowicz, J.P. Montagner (2015). Interpreting radial anisotropy in full-waveform tomographic models, In: “The Earth’s heterogeneous Mantle”, A. Khan, F. Deschamps and K. Kawai, Eds, Springer Verlag, The Earth’s Heterogeneous Mantle, 105-144

  • Ventosa, S. and B. Romanowicz (2015) Extraction of weak PcP phases using the slant-stacklet transform- I Method and examples, GJI, 201, 207-223.

  • Zheng, Z., S. Ventosa and B. Romanowicz (2015) High Resolution Upper Mantle Discontinuity Images across the Pacific Ocean from SS Precursors Using Local Slant Stack Filters, Geophys. J. Int., 202, 175-189.

  • Romanowicz, B. and B. J. Mitchell (2015) Deep Earth structure: Q of the Earth from crust to core, in Gerald Schubert (editor-in-chief) Treatise on Geophysics, 2nd edition, Oxford: Elsevier; 2015. pp. 789-827.

  • Dziewonski, A. M. and B. Romanowicz (2015) Deep Earth Seismology: An introduction and Overview, in Gerald Schubert (editor-in-chief) Treatise on Geophysics, 2nd edition, Oxford: Elsevier; 2015. 1-28.

  • French, S. W., Y. Zheng, B. Romanowicz and K. Yelick (2015) Parallel Hessian assembly for Seismic Waveform inversion using Global updates, Proceedings of the 29th IEEE International Parallel and Distributed Processing Symposium (2015). https://doi.org/10.1109/IPDPS.2015.58

  • French, S. W. and B. Romanowicz (2015) Broad plumes Rooted At The Base Of The Earth’s Mantle Beneath Major Hotspots, Nature, 525, 95-99. https://doi.org/10.1038/nature14876

  • Adam, J. and B. Romanowicz (2015), Global scale observations of scattered energy near the inner core boundary: Seismic constraints on the base of the outer core, Phys. Earth. Planet. Inter., 245, 103-116.

  • Ventosa, S. and B. Romanowicz (2015), Extraction of weak PcP phases using the slant-stacklet transform – II: constraints on lateral variations of structure near the core–mantle boundary, Geophys. J. Int., 203, 1227-1245.

  • Meschede, M. and B. Romanowicz (2015) Non-Stationary Spherical Random Media and their Effect on Long Period Mantle Waves, Geophys. J. Int., 203, 1605-1625. https://doi.org/10.1093/gji/ggv356

2014

  • Masson, Y., P. Cupillard, Y. Capdeville and B. Romanowicz (2014) On the numerical implementation of time reversal mirrors for tomographic imaging, Geophys. J. Int., 196, 1580-1599. https://doi.org/10.1093/gji/ggt459

  • Bodin, T., H. Yuan and B. Romanowicz (2014) Inversion of receiver functions without deconvolution - application to the Indian craton, Geophys. J. Int., 196, 1025-1033.

  • Yuan, H., S. French, P. Cupillard, B. Romanowicz (2014) Lithospheric expression of geological units in central and eastern North America from full waveform tomography, Earth and Planet. Sci. Lett., 402, 176-186. http://dx.doi.org/10.1016/j.epsl.2013.11.057

  • Cottaar, S., M. Li, A. McNamara, R. Wenk and B. Romanowicz (2014) Synthetic anisotropy models within a slab impinging on the core-mantle boundary, Geophys. J. Int., 199, 164-177. https://doi.org/10.1093/gji/ggu244

  • French, S. and B. Romanowicz (2014) Whole-mantle radially anisotropic shear-velocity structure from spectral-element waveform tomography, Geophys. J. Int., 199, 1303-1327. https://doi.org/10.1093/gji/ggu334

2013

  • Cottaar, S. and B. Romanowicz (2013) Observations of changing anisotropy across the southern margin of the African LLSVP, Geophys. J. Int. https://doi.org/10.1093/gji/ggt285

  • Durand, S., J. Matas, S. Ford, Y. Ricard, J.P. Montagner and B. Romanowicz (2013) Insights from ScS-S measurements on deep mantle attenuation, Earth Planet. Sci. Lett., 374, 101-110.

  • French, S., V. Lekic and B. Romanowicz (2013) Waveform Tomography Reveals Channeled Flow at the Base of the Oceanic Asthenosphere, Science, 342, 227-230.

  • Taira, T., Z. Zheng and B. Romanowicz (2013) On the systematic long period noise reduction on ocean floor broadband seismic sensors collocated with differential pressure gauges, Bull. Seism. Soc. Am., 104, 247-259. https://doi.org/10.1785/0120130015

2012

  • Romanowicz, B. and H. Yuan (2012) On the interpretation of SKS splitting measurements in the presence of several layers of anisotropy, Geophys. J. Int., 188, 1129-1140.

  • Panning, M., A. Cao, A. Kim and B. Romanowicz (2012) Non-linear 3D Born shear waveform tomography in southeast Asia, Geophys. J. Int., 188, 1129-1140.

  • Montagner, J.P., C. Larmat, Y. Capdeville, M. Fink, H. Phung, B. Romanowicz, E. Clévédé, H. Kawakatsu (2012) Time reversal method and cross-correlation techniques by normal mode theory: a three-point problem, Geophys. J. Int., 191, 637-652.

  • Lekic, V., S. Cottaar, A. Dziewonski and B. Romanowicz (2012) Cluster analysis of global lower mantle tomography: a new class of structure and implications for chemical heterogeneity Earth. Planet. Sci. Lett 357-358, 68-77.

  • Zheng Z. and B. Romanowicz (2012) “Do double “SS precursors” mean double discontinuities?” Geophys. J. Int., 191, 1361-1373.

  • Cottaar, S. and B. Romanowicz (2012) An unusually large ULVZ at the base of the mantle near Hawaii, Earth. Planet. Sci. Lett., 355-356, 213-222.

  • Zhang, R., Q. Wu, Y. Li and B. Romanowicz (2012) Lateral variations in SH velocity structure of the transition zone beneath Korea and adjacent regions, J. Geophys. Res., 117, B09315.

2011

  • Houlié, N. and B. Romanowicz (2011) Asymmetric deformation across the San Francisco Bay Area faults from GPS observations in northern California, Phys. Earth. Planet. Inter., 184, 143-153.

  • Lekic, V. and B. Romanowicz (2011) Inferring mantle structure by full waveform tomography using the Spectral Element Method, Geophys. J. Int., 185, 799-831. https://doi.org/10.1111/j.1365-246X.2011.04969.x

  • Yuan, H. B. Romanowicz, K. Fischer and D. Abt (2011) 3-D shear wave radially and azimuthally anisotropic velocity model of the north American upper mantle, Geophys. J. Int., 184, 1237-1260. https://doi.org/10.1111/j.1365-246X.2010.04901.x

  • Cupillard, P., L. Stehly and B. Romanowicz (2011) “The one-bit noise correlation: a theory based on the concepts of coherent and incoherent noise”, Geophys. J. Int., 184, 1397-1414.

  • Wenk, R. S. Cottaar, C. Tome, A. McNamara and B. Romanowicz (2011), Deformation in the Lowermost Mantle: From Polycrystal Plasticity to Seismic Anisotropy, Earth Planet. Sci Lett., 306, 33-45.

  • Lekic, V. and B. Romanowicz (2011) Tectonic regionalization without a priori information: a cluster analysis of upper mantle tomography, Earth Planet. Sci. Lett., 308, 151-160.

  • Stehly, L., P. Cupillard and B. Romanowicz (2011) Towards improving ambient noise tomography using simultaneously curvelet denoising filters and SEM simulation of ambient noise, C.R. Geoscience, 343, 591-599.

  • Wang,Z., J. Chong, S. Ni and B. Romanowicz (2011) Determination of focal depth by two waveform based methods: a case study for the 2008 Panzhihua earthquake, Earthq. Sci., 24, 321-328.

2010

  • Lekic, V., M. Panning and B. Romanowicz (2010) A simple method for improving crustal corrections in waveform tomography, Geophys. J. Int, 182, 265-278.

  • Abt, D., K. M. Fischer, S. W. French, H. A. Ford, H. Yuan and B. Romanowicz (2010), North American Lithospheric Discontinuity Structure Imaged By Ps and Sp Receiver Functions, J. Geophys. Res., 115, B09301. https://doi.org/10.1029/2009JB006914

  • Roult, G., J. P. Montagner, B. Romanowicz et al. (2010) GEOSCOPE: Program progress and challenges in the last 30 years, Seismolog. Res. Lett. 81, 427-452.

  • Yuan, H. and B. Romanowicz (2010) Lithospheric Layering in the North American Continent, Nature. 466, 1063-1069.

  • Chang, S.-J., S. van der Lee, M. P. Flanagan, H. Bedle, F. Marone, E. M. Matzel, M. E. Pasyanos, A. J. Rodgers, B. Romanowicz, and C. Schmid (2010) Joint inversion for 3-dimensional S-velocity mantle structure along the Tethyan margin, J. Geophys. Res. https://doi.org/10.1029/2009JB007204

  • Dziewonski, A. M., V. Lekic and B. Romanowicz (2010) Mantle Anchor Structure: an Argument for Bottom up Tectonics, Earth and Planetary Science Lett., 299, 69-79.

  • Panning, M., V. Lekic and B. Romanowicz (2010) The importance of crustal corrections in the development of a new global model of radial anisotropy, J. Geophys. Res. https://doi.org/10.1029/2010JB007520

  • Yuan, H. and B. Romanowicz (2010) Depth dependent anisotropy in the western U.S. upper mantle, Earth Planet. Sci. Lett., 300, 385-394.