CV Curriculum Vitae Local Earthquake Tomography Earthquake Location Future Work Stephan Husen Born July 13, 1967 in Kiel, Germany Scientific Record since.

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CV Curriculum Vitae Local Earthquake Tomography Earthquake Location Future Work Stephan Husen Born July 13, 1967 in Kiel, Germany Scientific Record since Jan MAGE Postdoc at ETH Zurich, Switzerland Postdoc at University of Utah, U.S.A Postdoc at ETH Zurich, Switzerland Ph.D. Thesis (1999) Local earthquake tomography of a convergent margin, North Chile received at GEOMAR, Kiel

LET - Development (FATOMO) Curriculum Vitae Local Earthquake Tomography Earthquake Location Future Work FATOMO Local earthquake tomography between rays and waves: Fat ray tomography Development: FATOMO use of fat ray instead of rays in seismic tomography

LET - Development (FATOMO) Curriculum Vitae Local Earthquake Tomography Earthquake Location Future Work FATOMO Local earthquake tomography between rays and waves: Fat ray tomography Development: FATOMO Source travel time field Receiver travel time field Fat ray approximating Fresnel Volume t sx + t rx - t sr = dt = T/2

LET - Development (MODEL PARA) Curriculum Vitae Local Earthquake Tomography Earthquake Location Future Work Three-Grid Approach Numerical grid: Specifically designed for forward solution Development: Model Parameterization Seismic grid: Resembling Earth structure incorporating a priori information Inversion grid: Specifically designed for optimal sampling of model parameters

LET - Application (Chile) Curriculum Vitae Local Earthquake Tomography Earthquake Location Future Work Subduction Zone North Chile Application: Subduction Zone Study structure and processes of the shallow portion of a subduction zone

LET - Application (Chile) Curriculum Vitae Local Earthquake Tomography Earthquake Location Future Work Subduction Zone North Chile Application: Subduction Zone Three-dimensional P-wave structure Three-dimensional P- to S-wave ratio (Vp/Vs) structure

LET - Application (Chile) Curriculum Vitae Local Earthquake Tomography Earthquake Location Future Work Subduction Zone North Chile Application: Subduction Zone Time-dependent inversion to image transient process of post-seismic fluid migration Vp/VS ratioSolution quality a) early b) late

LET - Application (Yellowstone) Curriculum Vitae Local Earthquake Tomography Earthquake Location Future Work Yellowstone Volcanic Field Application: Volcanic region Study structure and processes of a large volcanic system

LET - Application (Yellowstone) Curriculum Vitae Local Earthquake Tomography Earthquake Location Future Work Yellowstone Volcanic Field Application: Volcanic region P-wave velocityP- to S-wave ratio

LET - Application (Yellowstone) Curriculum Vitae Local Earthquake Tomography Earthquake Location Future Work Yellowstone Volcanic Field Application: Volcanic region crystallizing magma gas body 1985 swarm fluid Release of fluids generated by magma crystallization

EQ Location (PDF) Curriculum Vitae Local Earthquake Tomography Earthquake Location Future Work Posteriori Probability Density Function (PDF) non-linear, probabilistic earthquake location Grid-searchOct-Tree importance sampling confidence contoursscatter clouds maximum likelihood hypocenter location 68% confidence ellipsoid

EQ Location (example) Curriculum Vitae Local Earthquake Tomography Earthquake Location Future Work Posteriori Probability Density Function (PDF) non-linear, probabilistic earthquake location Nobs: 8 RMS: 0.04 s GAP: 193 Dmin: 1.9 km : N E 4.1km Non-linear(3D) Linear(1D)

Future Work Curriculum Vitae Local Earthquake Tomography Earthquake Location Future Work Relation to MAGE network my work is related to task 7 compilation of existing geophysical methods to invert data provided by the Netlander mission further development on existing geophysical methods for Earth studies application and tuning of existing geophysical methods to planetary data sets (real and synthetic) considering their peculiarities, i.e. small number of receivers