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Dr Teh-Ru Song
Kathleen Lonsdale Building, 117
Tel: 02031086370
  • Reader in Seismology
  • Dept of Earth Sciences
  • Faculty of Maths & Physical Sciences

After PhD at California Institute of Technology, I enjoy my time as a postdoc in DTM at Carnegie Institution of Washington and as a Scientist at IFREE, JAMSTEC in Japan. As a "free-style" seismologist generally, I strive to use critical seismological observations along with relevant theoretical and numerical grounds to uncover fine details of the Earth's interior and discuss/validate relevant processes operating on the planet and governing earthquakes genesis. 

Research Summary

Observational seismology focusing on analytic and numerical wave propagation modelling of broadband waveform and investigation of isotropic/anisotropic Earth structure relevant to plate tectonic processes and fast/slow earthquakes behaviours near plate boundary. 

Primarily driven by observations and always open to new venue in research, here are some of the topics I have been involved: 

Topics related to the interior of the Earth

1. High-resolution mapping of density contrast across upper mantle discontinuity.
2. High-frequency scattering and fine-scale anisotropy in plate. 
3. Anisotropic mantle lid in subducted slab, oceanic plate and craton and cratonic lithosphere. Inference of the formation of cratonic lithosphere and paleo spreading rate back to Archean. 
4. Seismic characterization of fine structure in subducted slab to investigate transport of water, slab serpentinization, slab melt and volcanic melt. 
5. Seismic characterization of D'' layer using 2-D and 3-D wave propagation and implication on phase transition, partial melt, composition anomaly and slab graveyard. 
6. Modeling core phases and examination of inner core topography to understand the growth of inner core.
7. Nature of lithosphere/asthenosphere boundary from joint modelling of SKS wave and teleseismic receiver function. 
8. Seismic probe of mantle mixing/unmixing.

Topics related to earthquake/volcano sources

1. Source scaling of repeating earthquakes.
2. Structural control of megathrust earthquake, slow slip events and non-volcanic tremors in subduction zones. 
3. Temporal velocity changes associated with great earthquakes and implications on material re-equilibrium and strain-rate dependent processes at seismogenic depth. 
4. Volcano seismology: Aso volcano conduit/magma chamber interaction.  

Teaching Summary

I will be starting a new module Seismology I in Fall 2014-2015. The module covers basic principle of modern seismology. After introduction of the history of seismology and instrument, the module will go through fundamental components of seismic wave theory, source theory and the use of seismic observations in constraining Earth's interior and earthquake source property. This module will be followed by another new module Seismology II by Dr. Ana Ferreira.      

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