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ConocoPhillips School of Geology & GeophysicsOU homepageConocoPhillips School of Geology & Geophysics

Nori Nakata

Nori

Lissa and Cy Wagner Assistant Professor

Ph.D., 2013, Geophysics, Colorado School of Mines
M.Sc., 2010, Civil and Earth Resource Engineering, Kyoto University
B.Sc., 2008, Global Engineering, Kyoto University

 

Office: SEC 860
Phone: 405-325-1574
Fax: 405-325-3140
Email: nnakata@ou.edu

Areas of Interest

Seismology, 3D/4D Seismic Imaging, Seismic Interferometry, Microseismic, Signal Processing, Wave Phenomena, Civil Structure Monitoring, Computational Seismology

Research

Through research I aim to gain better understanding of natural and manmade structures by analyzing seismic waves.  Although the laterally averaged (i.e., 1D) Earth's seismic-velocity structure has been known accurately since the 1940s, subsurface is heterogeneity in 3D, even 4D, and understanding these heterogeneities is key to understanding Earth dynamics.  Among the topics I am interested in predicting ground motion caused by large earthquakes, understanding earthquake source physics, discerning the history of the Earth, anticipating volcanic eruptions, and imaging the distribution of natural resources (e.g., petroleum, mines, geothermal).  Seismic waves sample Earth's interior, and hence we can obtain information of the Earth in 3D.  Temporally repeating these measurements opens a window into the dynamics of the Earth. To extract such information, I use manmade seismic sources, earthquakes, microseismic, and natural and anthropogenic background noise (aka ambient seismic noise).

Courses Taught

Seismic Imaging (Spring 2017)
Seismic Wave Phenomena (Spring 2017)
Seismic Rays and Waves (Fall 2016)
Introduction to Seismology (Fall 2014)
Advanced Engineering Mathematics (Fall 2012)

Selected Publications

Nakata, N. & Beroza, G. C. Reverse-time migration for microseismic sources using the geometric mean as an imaging condition Geophysics, 2016, 81, KS51-KS60

Nakata, N.; Boué, P.; Brenguier, F.; Roux, P.; Ferrazzini, V. & Campillo, M. Body and surface wave reconstruction from seismic-noise correlations between arrays at Piton de la Fournaise volcano Geophys. Res. Lett., 2016, 43, 1047-1054

Nakata, N.; Chang, J. P.; Lawrence, J. F. & Boué, P. Body-wave extraction and tomography at Long Beach, California, with ambient-noise interferometry J. Geophys. Res., 2015, 120, 1159-1173

Nakata, N.; Snieder, R.; Kuroda, S.; Ito, S.; Aizawa, T. & Kunimi, T. Monitoring a building using deconvolution interferometry. I: Earthquake-data analysis Bull. Seismol. Soc. Am., 2013, 103, 1662-1678

Nakata, N. & Snieder, R. Near-surface weakening in Japan after the 2011 Tohoku-Oki earthquake Geophys. Res. Lett., 2011, 38, L17302