bhhager@mit.edu

Bradford H. Hager
  • Associate Director, Earth Resources Laboratory
  • Cecil and Ida Green Professor of Earth Sciences
  • PhD, Geophysics, Harvard University, 1978
  • AM, Geology, Harvard University, 1976
  • BA, Physics, Amherst College, 1972
Biographical Overview
Brad Hager earned his Ph.D. from Harvard University in 1978 and then became a professor at Caltech’s Seismological Laboratory. He joined MIT in 1989 where he is now the Cecil and Ida Green Professor of Earth Sciences in the Department of Earth, Atmospheric and Planetary Sciences (EAPS). Brad became the Director of ERL in June, 2012. Brad’s research interests include the relationship between space-geodetic observations of surface deformation, earthquakes, and dynamical processes in the Earth’s interior. He has expertise on tectonic earthquakes in regional fault systems, as well as deformation and earthquakes induced by reservoir production. Hager is on NASA’s NISAR Science Definition Team, providing input on earthquake, hydrocarbon, carbon sequestration, and hydrologic applications. He is also a Fellow of the American Geophysical Union and the American Academy of Arts and Sciences. He has been awarded the Macelwane and Lehmann Medals by the American Geophysical Union, the Woollard Award by the Geological Society of America, and the Augustus Love Medal by the European Geophysical Union.
2020
C. Gu, Mok, U. , Marzouk, Y. M. , Prieto, G. A. , Sheibani, F. , J Evans, B. , and Hager, B. , “Bayesian waveform-based calibration of high-pressure acoustic emission systems with ball drop measurements”, Geophysical Journal International, vol. 221, no. 1, pp. 20 - 36, 2020.
2019
C. Gu, Mok, U. , Prieto, G. A. , Sheibani, F. , Evans, B. , and Hager, B. , “Bayesian waveform-based calibration of high-pressure acoustic emission system with ball drop measurements”, Geophysical Journal International, Geophysical Journal International, 2019.
F. Sheibani and Hager, B. , “Bridging Geomechanical and Geophysical Numerical Modeling: Evaluation of Seismic Efficiency and Rupture Velocity with Application to Estimating the Fractured Network Generated by Hydraulic Fracturing”, in SPE Hydraulic Fracturing Technology Conference and Exhibition, The Woodlands, Texas, USA, 2019.
C. Meng, Gu, C. , and Hager, B. , “An Eshelby Solution‐Based Finite‐Element Approach to Heterogeneous Fault‐Zone Modeling”, Seismological Research Letters, 2019.
2018
Y. Tal, Hager, B. , and Ampuero, J. Paul, “The Effects of Fault Roughness on the Earthquake Nucleation Process”, Journal of Geophysical Research: Solid Earth, 2018.
E. Bolotskaya and Hager, B. , “Joint theory of friction and fracturing for earthquake rupture modelling”, in American Geophysical Union Fall Meeting, Washington, DC, 2018.
Y. Tal and Hager, B. , “The Slip Behavior and Source Parameters for Spontaneous Slip Events on Rough Faults Subjected to Slow Tectonic Loading”, Journal of Geophysical Research: Solid Earth, pp. 1810 - 1823, 2018.
2017
M. Fang and Hager, B. , “Denuisancing the effects of induced ground uplift on time-varying gravity using gravity gradiometry”. 2017.
B. Hager, “ERL Founding Members Consortium: Overview”. 2017.
B. Hager, “Integrating Lab and Numerical Experiments to Investigate Fractured Rock”. 2017.
C. Meng and Hager, B. , “Multiphysics and multiscale earthquake modeling”. 2017.
F. Sheibani and Hager, B. , “Seismic Efficiency vs. Fracability; Effects of Mechanical Properties on Radiated Elastic Waves With Application to Hydraulic-Fracturing-Induced Microseismicity”, in AAPG Annual Convention & Exhibition, Houston, TX, 2017.
2016
B. Hager, “ERL Founding Members Consortium: Overview”. 2016.
R. Juanes, Jha, B. , Hager, B. , Shaw, J. H. , Plesch, A. , Astiz, L. , Dieterich, J. H. , and Frohlich, C. , “Were the May 2012 Emilia-Romagna earthquakes induced? A coupled flow-geomechanics modeling assessment”, Geophysical Research Letters, vol. 43, no. 13, pp. 6891 - 6897, 2016.
2015
Y. Tal and Hager, B. , “An empirical study of the distribution of earthquakes with respect to rock type and depth”, Geophysical Research Letters, vol. 42, no. 18, pp. 7406 - 7413, 2015.
F. Sheibani and Hager, B. , “Optimizing Shear Stresses at the Tip of a Hydraulic Fracture-What Is the Ideal Orientation of Natural Fractures with respect to Hydraulic Fracture?”, AGU Fall Meeting. San Francisco, CA, 2015.
B. Jha, Bottazzi, F. , Wojcik, R. , Coccia, M. , Bechor, N. , McLaughlin, D. , Herring, T. , Hager, B. , Mantica, S. , and Juanes, R. , “Reservoir characterization in an underground gas storage field using joint inversion of flow and geodetic data”, International Journal for Numerical and Analytical Methods in Geomechanics, vol. 39, no. 14, pp. 1619 - 1638, 2015.
2014
B. Hager, “Fundamental Studies of Induced Seismicity”. 2014.
H. Wang, Hager, B. , and Evans, B. , “Geomechanical implications of carbon sequestration in carbonate saline aquifer”. 2014.
2012
R. Juanes, Hager, B. , and Herzog, H. J. , “No geologic evidence that seismicity causes fault leakage that would render large-scale carbon capture and storage unsuccessful”, Proc. Natl. Acad. Sci. U.S.A., 109(52), 2012.
2005
B. J. Meade and Hager, B. , “Spatial localization of moment deficits in southern California”, Journal of Geophysical Research, 110, 2005.
2002
B. J. Meade, Hager, B. , and Reilinger, R. E. , “Estimates of seismic potential in the Marmara region from block models of secular deformation constrained by GPS measurements”, Bulletin of the Seismological Society of America, 92: 208-215, 2002.
E. H. Hearn, Hager, B. , and Reilinger, R. E. , “Viscoelastic deformation from North Anatolian Fault Zone earthquakes and the eastern Mediterranean GPS velocity field”, Geophysical Research Letters, 29, 2002.