Oral Presentations

*: indicates presenting author.

2015:

  • Schaeffer, A.J.* and S. Lebedev. Structure and dynamics of the North American lithosphere imaged using waveform inversion of global and USArray data. 2015 AGU-CGU Joint Assembly, Montreal, Canada. May 2015.
  • Agius, M.R.*, A.J. Schaeffer*, A. Licciardi* and P. Arroucau*. Seismology for Non-Seismologists Short Course. 2015 EGU General Assembly, Vienna, Austria. April 2015.
  • Schaeffer, A.J.* and S. Lebedev. Lithospheric structure of North America imaged using waveform inversion of global and USArray data. 2015 EGU General Assembly, Vienna, Austria. April 2015.
  • Schaeffer, A.J.* and S. Lebedev. Seismic Tomography of the Arctic Lithosphere and Asthenosphere. 2015 EGU General Assembly, Vienna, Austria. April 2015. (Invited)
  • Schaeffer, A.J.*, S. Lebedev, and T.W. Becker. Global distribution of azimuthal anisotropy within the lithosphere, asthenosphere, and transition zone. 2015 EGU General Assembly, Vienna, Austria. April 2015. (added as oral to replace withdrawn abstract)
  • Becker, T.W.*, C.P. Conrad, A.J. Schaeffer and S. Lebedev. Origin of Seismic Anisotropy in Oceanic Plates and Mantle. 2015 EGU General Assembly, Vienna, Austria. April 2015.
  • Schaeffer, A.J.* Seismic Tomography using millions of broadband seismograms: Imaging upper mantle structure at global and regional scales. University of Victoria. March 2015. (Invited)
  • Becker, T.W.*, C.P. Conrad, A.J. Schaeffer, S. Lebedev, L. Auer, and L. Boschi. Oceanic boundary layer structure and dynamics from a comprehensive analysis of seismic anisotropy. BGS LAB Meeting, London, England. February 2015.

2014:

  • Schaeffer, A.J.* and S. Lebedev. Imaging the Mantle Transition Zone Using Multimode Waveform Tomography. AGU Fall Meeting, San Francisco. December 2014.
  • Schaeffer, A.J.* and S. Lebedev. Lithospheric Structure of the North American Craton Imaged Using Waveform Inversion of Global and USArray Data. AGU Fall Meeting, San Francisco. December 2014.
  • Schaeffer, A.J.* and S. Lebedev. Seismic Tomography of the Arctic Lithosphere and Asthenosphere. Geological Society of America 2014 Annual Meeting, Vancouver, Canada. October 2014.
  • Lebedev, S.*, T. Meier, A. J. Schaeffer, M.R. Agius, and J.M.-C. Adam. Seismic structure and dynamics of cratons: stability and modification, continental collision and subduction.  2014 EGU General Assembly, Vienna, Austria. April 2014.
  • Lebedev, S.*, A. J. Schaeffer, and M.R. Agius. The Greater Indian beneath Tibet: A detailed new seismic mapping. 2014 EGU General Assembly, Vienna, Austria. April 2014.
  • Neenan, E.E.*, A. J. Schaeffer, S. Lebedev, T. Meier, and T. Blake. Array Imaging at Continent Scale: Surface-wave Tomography of Asia using automated, broadband interstation measurements. 57th IGRM, University College Dublin. March 2014.

2013:

  • Lebedev, S.* and A. J. Schaeffer. Seismic Tomography of the Arctic: Continental Cratons, Ancient Orogens, Oceanic Lithosphere and Convecting Mantle Beneath. AGU Fall Meeting, San Francisco. December 2013.
  • Lebedev, S.* and A. J. Schaeffer. Seismic Tomography with millions of waveforms and global upper-mantle heterogeneity, with a zoom-in on the Arctic. University of Oslo, Norway. October 2013.
  • Lebedev S.* and A.J. Schaeffer. Seismic tomography meets millions of waveforms: exploiting data redundancy to control errors and increase resolution. 4th Quest Workshop, Benodet, France. May 2013
  • Schaeffer, A.J. and S. Lebedev*. Heterogeneity of the Earth’s upper mantle, from waveform inversion of over one million broadband seismograms. 2013 EGU General Assembly, Vienna, Austria. April 2013.
  • Schaeffer, A.J.* and S. Lebedev. Heterogeneity of the Earth’s upper mantle and crust. 56th IGRM, University of Ulster, Derry. March 2013.
  • Schaeffer, A.J.* and S. Lebedev. Heterogeneity and upper mantle structure of the the North American Continent. GEM Project Wrap Up Meeting, University of British Columbia, Vancouver, Canada. February 2013. (Invited)
  • Schaeffer, A.J.*. Heterogeneity of the Earth’s upper mantle: from global to regional scales. School of Geological Sciences, University College Dublin. January 2013. (Department Seminar)

2012:

  • Schaeffer, A.J.* and S. Lebedev. Shear speed structure of the Earth’s upper mantle and crust, imaged using surface and S waveform tomography. AGU Fall Meeting, San Francisco. December 2012.
  • Lebedev, S.*, C. Horan, P.W. Readman, A.J. Schaeffer, M.R. Agius, J.M.-C. Adam, L. Collins, F. Hauser, B.M. O’Reilly, and T. Blake. Ireland Array: A New Broadband Seismic Experiment Targets the Structure, Evolution, and Seismicity of Ireland and the North Atlantic. European Seismological Commission 33rd General Assembly, Moscow, Russia. August 2012.
  • Schaeffer, A.J. and S. Lebedev*. Isotropic and Anisotropic structure of the upper mantle, imaged with surface and S waveform tomography. European Seismological Commission 33rd General Assembly, Moscow Russia.August 2012.
  • Schaeffer, A.J.* and S. Lebedev. Isotropic and Anisotropic structure of the upper mantle, imaged with surface and S waveform tomography. 3rd QUEST Workshop, Tatranska Lomnica, Slovakia. May 2012. (Invited)
  • Lebedev, S.*, C. Horan, P.W. Readman, A.J. Schaeffer, M.R. Agius, L. Collins, F. Hauser, B.M. O’Reilly, and T. Blake. Ireland Array: A new broadband seismic network targets the structure, evolution and seismicity of Ireland and surroundings. 2012 EGU General Assembly, Vienna, Austria. April 2012.
  • Lebdev, S.*, E.E. Neenan, B. Knapmeyer-Endrun, T. Meier, M.R. Agius, A.J. Schaeffer, C. Tirel, and W. Friederich. Lithospheric dynamics in eastern Mediterranean: Insights from seismic structure and anisotropy. 2012 EGU General Assembly, Vienna, Austria. April 2012.
  • Schaeffer, A.J.* and S. Lebedev. Anisotropic structure of the upper mantle, imaged with Surface and S waveform tomography.55th IGRM, University College Cork, Cork. February 2012. (Winner, Best Student Talk)
  • E. Neenan*, Schaeffer, A.J., Agius, M.R., and Lebedev, S.. The North Anatolian Fault and lithospheric dynamics in eastern Mediterranean: A seismic surface-wave study. 55th Irish Geological Research Meeting, UCC, Cork. February 2012.

2011:

  • Schaeffer, A.J.* and S. Lebedev. Anisotropic Structure of the upper mantle, imaged with surface and S waveform tomography.AGU Fall Meeting, San Francisco. December 2011.
  • Lebedev, S.*, C. Horan, P.W. Readman, A.J. Schaeffer, L. Collins, M.R. Agius, F. Hauser, B.M. O’Reilly, and T. Blake. Ireland Array: a seismic investigation of Ireland’s evolution, seismicity, and new energy resource potential. Atlantic Ireland (PIP-ISPSG), Dublin, Ireland. October 2011.
  • Schaeffer, A.J.* and S. Lebedev. Global and regional scale seismic tomography using surface and S waveform inversion. EGU General Assembly, Vienna. April 2011.
  • Lebedev, S.*, C. Horan, P.W. Readman, A.J. Schaeffer, L. Collins, F. Hauser, and B.M. O’Reilly. Ireland Array: broadband seismic investigation of the lithospheric structure and evolution of Ireland and surroundings. 54th IGRM, National University Ireland, Galway. February 2011.

2010:

  • Schaeffer, A.J.* and M.G. Bostock. The Transition Zone low-velocity zone: properties in Northwestern Canada. AGU Fall Meeting, San Francisco. December 2010. (Invited)
  • Becker, T.W., J.W. Crowley, M. Gerault*, T. Hoink, A.J. Schaeffer, P. Barry, J. Frost, J. Girard, M. Nunez-Valdez, M. Hirschmann, S. Hier-Majumder, and R.J. O’Connell. Deep Water Cycle: its Role in Earth’s Thermal Evolution and Plate Tectonics. AGU Fall Meeting, San Francisco. December 2010.
  • Schaeffer, A.J.* and M.G. Bostock. A low-velocity zone atop the transition zone in Northwestern Canada. 53rd IGRM, Belfast. February 2010.
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