Suchergebnis: Katalogdaten im Frühjahrssemester 2021

Erdwissenschaften Master Information
Vertiefung in Geophysics
Wahlpflichtmodule Geophysics
Physics of the Earth's Interior
NummerTitelTypECTSUmfangDozierende
651-4017-00LEarth's Core and the GeodynamoO3 KP2GP. D. Marti, C. Hardy
KurzbeschreibungIn 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.
LernzielThe 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.
Inhalt(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.
Voraussetzungen / BesonderesThe 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.
651-4008-00LDynamics of the Mantle and LithosphereO3 KP2GA. Rozel
KurzbeschreibungDas Ziel dieses Kurses ist, ein ausführliches Verständnis der physikalischen Eigenschaften, der Struktur und des dynamischen Verhaltens des Mantle-Lithosphäre Systems zu erreichen. Der Kurs fokussiert hauptsächlich auf die Erde aber bespricht auch wie diese Prozesse in anderen terrestrischen Planeten auftreten.
LernzielDas Ziel dieses Kurses ist, ein ausführliches Verständnis der physikalischen Eigenschaften, der Struktur und des dynamischen Verhaltens des Umhang-Lithoshäre Systems zu erreichen, konzentriert, hauptsächlich auf Masse aber auch bespricht, wie diese Prozesse anders als in anderen terrestrischen Planeten auftreten.
651-5104-00LDeep Electromagnetic Sounding of the Earth and Planetary Interiors
The attendance of Mathematical Methods (651-4130-00L, Autumn Semester) is advisable.
O3 KP2GA. Kuvshinov, A. Grayver, F. Samrock
KurzbeschreibungThe 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.
LernzielThe 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.
InhaltTentative 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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