651-4094-00L  Numerical Modelling for Applied Geophysics

SemesterFrühjahrssemester 2021
DozierendeJ. Robertsson, H. Maurer
Periodizitätjährlich wiederkehrende Veranstaltung
LehrspracheEnglisch



Lehrveranstaltungen

NummerTitelUmfangDozierende
651-4094-00 GNumerical Modelling for Applied Geophysics2 Std.
Di08:15-12:00NO C 6 »
08:15-12:00NO F 11 »
21.05.14:15-16:00NO C 6 »
J. Robertsson, H. Maurer

Katalogdaten

KurzbeschreibungNumerical modelling in environmental and exploration geophysics. The course covers different numerical methods such as finite difference and finite element methods applied to solve PDE’s for instance governing seismic wave propagation and geoelectric problems.

Prerequisites include basic knowledge of (i) signal processing and applied mathematics such as Fourier analysis and (ii) Matlab.
LernzielAfter this course students should have a good overview of numerical modelling techniques commonly used in environmental and exploration geophysics. Students should be familiar with the basic principles of the methods and how they are used to solve real problems. They should know advantages and disadvantages as well as the limitations of the individual approaches.

The course includes exercises in Matlab where the stduents both should lear, understand and use existing scripts as well as carrying out some coding in Matlab themselves.
InhaltDuring the first part of the course, the following topics are covered:
- Applications of modelling
- Physics of acoustic, elastic, viscoelastic wave equations as well as Maxwell's equations for electromagnetic wave propagation and diffusive problems
- Recap of basic techniques in signal processing and applied mathematics
- Potential field modelling
- Solving PDE's, boundary conditions and initial conditions
- Acoustic/elastic wave propagation I, explicit time-domain finite-difference methods
- Acoustic/elastic wave propagation II, Viscoelastic, pseudospectral
- Acoustic/elastic wave propagation III, spectral accuracy in time, frequency domain FD, Eikonal
- Implicit finite-difference methods (geoelectric)
- Finite element methods, 1D/2D (heat equation)
- Finite element methods, 3D (geoelectric)
- Acoustic/elastic wave propagation IV, Finite element and spectral element methods
- HPC and current challenges in computational seismology
- Seismic data imaging project

Most of the lecture modules are accompanied by exercises Small projects will be assigned to the students. They either include a programming exercise or applications of existing modelling codes.
SkriptPresentation slides and some background material will be provided.
LiteraturIgel, H., 2017. Computational seismology: a practical introduction. Oxford University Press.
Voraussetzungen / BesonderesThis course is offered as a full semester course. During the second part of the semester some lecture slots will be dedicated towards working on exercises and course projects.

Leistungskontrolle

Information zur Leistungskontrolle (gültig bis die Lerneinheit neu gelesen wird)
Leistungskontrolle als Semesterkurs
ECTS Kreditpunkte5 KP
PrüfendeJ. Robertsson, H. Maurer
Formbenotete Semesterleistung
PrüfungsspracheEnglisch
RepetitionRepetition ohne erneute Belegung der Lerneinheit möglich.

Lernmaterialien

 
LiteraturH. Igel, 2016, Computational Seismology - A Practical Introduction: Oxford University Press.
L. Råde and B. Westergren, 1990, Beta [beta] mathematics handbook: Studentlitteratur.
Es werden nur die öffentlichen Lernmaterialien aufgeführt.

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Angeboten in

StudiengangBereichTyp
Applied Geophysics MasterPeriod ETHZOInformation
Rechnergestützte Wissenschaften BachelorGeophysik: Fach 4WInformation
Rechnergestützte Wissenschaften MasterGeophysik: Fach 4WInformation