UCL Earth Sciences


Michael Frietsch

"Investigating the earthquake source and earth structure"

PhD project title:

Joint-inversion of seismological and space geodetic data to characterise the earthquake source and earth structure.

Michael Frietsch
Project description:

My research focuses on determining the earthquake source mechanism and the analysis of the surrounding earth structure, deriving enhanced comprehension of earth's dynamics and its composition. Advanced knowledge about the earthquake source and high resolution earth models may serve for example to make earthquake early warning systems more reliable.

Traditionally information on the earthquake source was only based on seismological data measured by sensors nearby or in teleseismic distance. Nowadays space geodetic satellite systems, like InSar or GPS, are recently used to enhance the characterization of the earthquake source. The combination of these different techniques in a joint-inversion algorithm showed unprecedented accuracy of earthquake source parameters. Obtaining conclusions not only on the earthquake source but as well on the earth structure is one of the challenging aims of this study. The research work is concentrated on the improvement of these joint-inversion algorithms and methods. Wave form modeling is thereby the key method to investigate earth's interior and validate the earthquake parameters.

I am a first year full-time PhD student in the field of seismology. Before starting the PhD at UCL, I have received a diploma degree in geophysics at KIT (Karlsruhe, Germany). My research has been focused on induced seismicity and shear wave anisotropy in the upper crust on a local scale.