| uOttawa Geophysics

Dr. Andrew Schaeffer

Research Scientist

Geological Survey of Canada

Andrew is famous for the innumerable citations of his “Schaeffer and Lebedev” papers. The references appear on approximately 1 in 3 posters and talks at AGU. It’s just absurd.

Andrew was a NSERC Postdoctoral Fellow in the UO Geophysics group from 2015 to 2017, and a Banting Postdoctoral Fellow also in our group from 2017 to 2018. He still (!) maintains our group computers.

Interests

Seismic Tomography
Dynamics and evolution of northwestern Canada
Seismic Hazard Assessment
Seismo-tectonics

Education

PhD in Geophysics, 2014
University College, Dublin
MSc in Geophysics, 2009
University of British Columbia
BSc in Geophysics, 2006
University of British Columbia

Awards

2017-2018 Banting Postdoctoral Fellowship
2015-2017 NSERC Postdoctoral Fellowship
2014 Study of the Earth’s Deep Interior Graduate Research Award, American Geophysical Union
2013 Best Student Paper Award, Geophysical Journal International

Publications

Claire A. Currie, Deirdre A. Mallyon, Tai-Chieh Yu, Yunfeng Chen, Dr. Andrew Schaeffer, Pascal Audet, Yu Jeffrey Gu (2023). Mantle structure and dynamics at the eastern boundary of the northern Cascadia backarc. Journal of Geodynamics.
Project DOI
A. Boyce, M. V. Liddell, S. Pugh, J. Brown, E. McMurchie, A. Parsons, Dr. Clément Estève, S. Burdick, F. A. Darbyshire, S. Cottaar, I. D. Bastow, Dr. Andrew Schaeffer, Pascal Audet, D. L. Schutt, R. C. Aster (2023). A New P-Wave Tomographic Model (CAP22) for North America: Implications for the Subduction and Cratonic Metasomatic Modification History of Western Canada and Alaska. Journal of Geophysical Research.
Project DOI
Dr. Jeremy Gosselin, Pascal Audet, Dr. Clément Estève, Dr. Andrew Schaeffer (2022). Probabilistic inversion of circular phase spectra: Application to two-station phase-velocity dispersion estimation in western Canada. Geophysical Journal International.
Project Project DOI
Derek L Schutt, Robert W Porritt, Dr. Clément Estève, Pascal Audet, Dr. Jeremy Gosselin, Dr. Andrew Schaeffer, Richard C Aster, Jeffrey T Freymueller, Joel F Cubley (2022). Lithospheric S‐wave velocity variations beneath the Mackenzie Mountains and Northern Canadian Cordillera. Journal of Geophysical Research.
Project DOI
Taylor Tracey Kyryliuk, Pascal Audet, Dr. Jeremy Gosselin, Dr. Andrew Schaeffer (2022). Crustal seismic anisotropy along the continental margin in western Canada from receiver function analysis. Journal of Geophysical Research.
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Dr. Clément Estève, Yajing Liu, Ivan Koulakov, Dr. Andrew Schaeffer, Pascal Audet (2022). Seismic evidence for a weakened thick crust at the Beaufort Sea continental margin. Geophysical Research Letters.
Project DOI
Andrew Bolton, Derek Schutt, Richard C. Aster, Pascal Audet, Dr. Andrew Schaeffer, Dr. Clément Estève, Jeff Freymueller, Joel Cubley (2021). Evidence for asthenospheric flow rotation in northwest Canada: insights from shear wave splitting. Geophysical Journal International.
Project DOI
Dr. Clément Estève, Dr. Jeremy Gosselin, Pascal Audet, Dr. Andrew Schaeffer, Derek Schutt, Richard C. Aster (2021). Surface-Wave Tomography of the Northern Canadian Cordillera Using Earthquake Rayleigh Wave Group Velocities. Journal of Geophysical Research.
Project DOI
Dr. Jeremy Gosselin, Pascal Audet, Dr. Andrew Schaeffer, Fiona A. Darbyshire, Dr. Clément Estève (2021). Azimuthal anisotropy in Bayesian surface-wave tomography: application to northern Cascadia and Haida Gwaii. Geophysical Journal International.
Project Project DOI
Pascal Audet, Derek Schutt, Dr. Andrew Schaeffer, Dr. Clément Estève, Richard C. Aster, Joel Cubley (2020). Moho variations across the northern Canadian Cordillera. Seismological Research Letters.
Project DOI
Dr. Clément Estève, Pascal Audet, Dr. Andrew Schaeffer, Derek Schutt, Richard C. Aster, Joel Cubley (2020). Seismic evidence for craton chiseling and displacement of lithospheric mantle by the Tintina Fault in the Northern Canadian Cordillera. Geology.
Project DOI
Dr. Jeremy Gosselin, Pascal Audet, Dr. Clément Estève, Dr. Morgan McLellan, Dr. Stephen G. Mosher, Dr. Andrew Schaeffer (2020). Seismic evidence for megathrust fault-valve behavior during episodic tremor and slip. Science Advances.
PDF Project DOI
Dr. Clément Estève, Pascal Audet, Dr. Andrew Schaeffer, Derek Schutt, Richard C. Aster, Joel Cubley (2020). The upper mantle structure of northwestern Canada from teleseismic body wave tomography. Journal of Geophysical Research.
Project DOI
Yunfeng Chen, Yu Jeffrey Gu, Claire A. Currie, Stephen T. Johnston, Shu-Huei Hung, Dr. Andrew Schaeffer, Pascal Audet (2019). Seismic evidence for a mantle suture and implications for the origin of the Canadian Cordillera. Nature Communications.
Project DOI
Pascal Audet, Claire A. Currie, Dr. Andrew Schaeffer, Alexander M. Hill (2019). Seismic evidence for lithospheric thinning and heat in the Northern Canadian Cordillera. Geophysical Research Letters.
Project DOI
Dr. Clément Estève, Dr. Andrew Schaeffer, Pascal Audet (2019). Upper mantle structure underlying the diamondiferous Slave craton from teleseismic body-wave tomography. Tectonophysics.
DOI
Pascal Audet, Dr. Andrew Schaeffer (2018). Fluid pressure and shear zone development over the locked to slow slip region in Cascadia. Science Advances.
Project Project DOI
Dr. Morgan McLellan, Dr. Andrew Schaeffer, Pascal Audet (2018). Structure and fabric of the crust and uppermost mantle in the northern Canadian Cordillera from Rayleigh-wave tomography. Tectonophysics.
Project DOI
Pascal Audet, Christian Sole, Dr. Andrew Schaeffer (2016). Control of lithospheric inheritance on neotectonic activity in northwestern Canada?. Geology.
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