# Search result: Catalogue data in Spring Semester 2021

Earth Sciences Master | ||||||

Major in Geophysics | ||||||

Restricted Choice Modules Geophysics | ||||||

Physics of the Earth's Interior | ||||||

Number | Title | Type | ECTS | Hours | Lecturers | |
---|---|---|---|---|---|---|

651-4017-00L | Earth's Core and the Geodynamo | O | 3 credits | 2G | P. D. Marti, C. Hardy | |

Abstract | In Earth's core, motions of liquid iron act as a dynamo producing the geomagnetic field. This course explores the composition, structure and physical conditions in Earth's core and describes the geomagnetic field before focusing on the geodynamo mechanism. An interdisciplinary perspective is adopted involving electromagnetism and fluid dynamics but also seismology and mineral physics. | |||||

Objective | The objectives of this course are: (i) Development of the geophysical and sometimes mathematical tools needed to understand Earth's core and the geodynamo. (ii) Acquisition of knowledge concerning physical and observational constraints on the dynamics of Earth's core and the evolution of the geomagnetic field. | |||||

Content | (i) Structure and composition of Earth's core: Including PREM, Adams-Williamson equation, Inner core anisotropy, Geochemical constraints, High Pressure mineral physics Experiments, Phase changes, Adiabatic temperature profiles, Geotherms, Power sources for the Geodynamo. (ii) Observational geomagnetism: Spherical harmonics, Global field models, Westward drift, Jerks, Core field inverse problem, Core field structure and historical evolution, Polarity excursions and reversals, Time-averaged field. (iii) Theory of the Geodynamo: Review of Maxwell's equations, Induction equation, Alpha Effect and Omega Effect, Proudman-Taylor theorem Geostrophy, Rotating Convection, Experimental and numerical dynamos. | |||||

Prerequisites / Notice | The Earth's Core and Geodynamo Course capitalizes on the knowledge of: - 651-4001-00L: Geophysical Fluid Dynamics - 651-4130-00L: Mathematical Methods Therefore we recommend that the students have attended those courses or others of similar content. | |||||

651-4008-00L | Dynamics of the Mantle and Lithosphere | O | 3 credits | 2G | A. Rozel | |

Abstract | The goal of this course is to obtain a detailed understanding of the physical properties, structure, and dynamical behavior of the mantle-lithosphere system, focusing mainly on Earth but also discussing how these processes occur differently in other terrestrial planets. | |||||

Objective | The goal of this course is to obtain a detailed understanding of the physical properties, structure, and dynamical behavior of the mantle-lithosphere system, focusing mainly on Earth but also discussing how these processes occur differently in other terrestrial planets. | |||||

651-5104-00L | Deep Electromagnetic Sounding of the Earth and Planetary InteriorsThe attendance of Mathematical Methods (651-4130-00L, Autumn Semester) is advisable. | O | 3 credits | 2G | A. Kuvshinov, A. Grayver, F. Samrock | |

Abstract | The course guides students in learning about phenomenon of the electromagnetic induction in the Earth and other terrestrial planets. The course focuses on studying fundamentals of electromagnetism as well as on analysis and interpretation of long-period time-varying EM fields observed on the ground and in space, which are used to image electrical conductivity in the Earth and planetary interiors. | |||||

Objective | The objectives of this course are: (i) Development of the geophysical and mathematical tools needed to understand electromagnetic induction through the analysis of the Maxwell's equations. (ii) Introduction to the physical nature of magnetospheric, ionospheric and ocean induced electromagnetic signals. (iii) Basics of the data interpretation and applications in the fields of deep mantle physics, geothermal exploration and space weather hazards. | |||||

Content | Tentative content of the lectures: (i) Introduction to electromagnetic induction: governing equations, summary of the main EM sounding methods (ii) Electrical conductivity of rocks and minerals: conduction mechanisms, anisotropy (iii) Basics of geomagnetic deep sounding (GDS) method: solution of Maxwell’s equations in spherical geometry, GDS transfer functions (iv) Basics of magnetotelluric (MT) method: solution of Maxwell’s equations in Cartesian geometry, MT transfer functions (v) Motional induction: tidal magnetic signals, satellite observations (vi) Data acquisition and processing (vii) Numerical solution of Maxwell's equations in models with 3-D conductivity distribution (viii) Geomagnetic depth sounding of terrestrial planets (ix) Other applications: geothermal exploration, mantle conductivity studies, space weather modeling |

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