Andrew Jackson: Katalogdaten im Frühjahrssemester 2019 |
Name | Herr Prof. Dr. Andrew Jackson |
Lehrgebiet | Geophysik |
Adresse | Institut für Geophysik ETH Zürich, NO H 11.2 Sonneggstrasse 5 8092 Zürich SWITZERLAND |
Telefon | +41 44 633 73 49 |
Fax | +41 44 633 10 65 |
andrew.jackson@erdw.ethz.ch | |
Departement | Erdwissenschaften |
Beziehung | Ordentlicher Professor |
Nummer | Titel | ECTS | Umfang | Dozierende | |
---|---|---|---|---|---|
651-3440-01L | Geophysik II Dieser Kurs ersetzt 651-3440-01 Gravimetry Sofern Gravimetry absolviert wurde, darf die Lerneinheit Geophysik II nicht absolviert werden. | 4 KP | 3G | A. Jackson, M. D. Ballmer, P. Tackley | |
Kurzbeschreibung | Treatment of fundamental aspects of gravimetry and geomagnetism. We review the fundamentals of gravity set out by Newton, orbital dynamics and gravity applications in exploration geophysics. We will explore the mechanisms by which the geomagnetic field is created, how geomagnetic measurements can be used for resource exploration, and how palaeomagnetism tells us about the history of the Earth. | ||||
Lernziel | Treatment of fundamental aspects of geophysics in the area of gravimetry and geomagnetism: methods and applications. Our objectives are to learn fundamental theories and techniques relevant to the geomagnetic and gravity fields, but also to put them into practice in a quantitative way. We will learn to use mathematical techniques make quantitative estimates of geophysical phenomena. The examination will require the implementation of mathematics to solve questions in the spheres of geomagnetism and gravity. | ||||
Inhalt | Gravimetry: gravitation, Earth rotation, centrifugal force. Gravity, geoid, reference ellipsoid, normal gravity. Reduction of gravity measurements, gravity anomalies. Isostasy: models of Pratt, Airy, Vening Meinesz. Interpretation of gravity anomalies and relationship to dynamic and static features. Geomagnetism: geomagnetic fields of external and internal origin, dipole and non-dipole fields, diurnal variation, magnetic prospecting, magnetic anomalies. Rock magnetism, remanent magnetizations. Paleomagnetism: sample treatment, secular variation, geocentric axial dipole field, apparent polar wander curves, polarity reversals, magnetic stratigraphy. | ||||
Skript | Lecture slides will be distributed. | ||||
Literatur | Primary Texts: W. Lowrie: Fundamentals of Geophysics, Cambridge University Press 1997 (1st Edition) or 2007 (2nd Edition) C. M. R. Fowler: The Solid Earth - An Introduction to Global Geophysics, 2004. Secondary Texts: F. D. Stacey and P. M. Davis: Physics of the Earth, Cambridge Uniiversity Press 2008. | ||||
Voraussetzungen / Besonderes | Prerequisite: The Dynamic Earth I or an equivalent course. | ||||
651-4017-00L | Earth's Core and the Geodynamo | 3 KP | 2G | J. A. R. Noir, A. Jackson, M. J. Plumley | |
Kurzbeschreibung | 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. | ||||
Lernziel | 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. | ||||
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 / Besonderes | 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. | ||||
651-4180-01L | Integrierte Erdsysteme I Nur für Erdwissenschaften BSc, Studienreglement 2016. | 5 KP | 4G + 1U | O. Bachmann, A. Fichtner, A. Jackson, M. Schönbächler, P. Tackley | |
Kurzbeschreibung | Planet Earth has had complex history since its formation ~4.6 billion years ago. To understand its past evolution, and glimpse at its future, one needs an integrated perspective including many aspects of the earth sciences (geochemistry, geophysics, geology,…). The main goal of the course is to achieve this integrated view of the solid part of our planet. | ||||
Lernziel | to provide to the student an integrate view of solid earth, with the perspective of several different disciplines of the earth sciences | ||||
Inhalt | The main goal of "Integrierte Erdsystem I" is to achieve an integrated view of the solid part of our planet through a series of lectures, exercises, and tutorials that will involve multiple disciplines. |