Zur Seitennavigation oder mit Tastenkombination für den accesskey-Taste und Taste 1 
Zum Seiteninhalt oder mit Tastenkombination für den accesskey und Taste 2 

Foto: Matthias Friel

Theory of elastic seismic waves - Einzelansicht

  • Funktionen:
  • Zur Zeit keine Belegung möglich
Veranstaltungsart Vorlesung/Übung Veranstaltungsnummer
SWS 4 Semester WiSe 2023/24
Einrichtung Institut für Geowissenschaften   Sprache englisch
Belegungsfrist 02.10.2023 - 10.11.2023   
Gruppe 1:
     Zur Zeit keine Belegung möglich
    Tag Zeit Rhythmus Dauer Raum Lehrperson Ausfall-/Ausweichtermine Max. Teilnehmer/-innen
Einzeltermine anzeigen
Vorlesung Do 08:30 bis 10:00 wöchentlich 19.10.2023 bis 08.02.2024  2.27.2.36 Prof. Dr. Dahm 28.12.2023: Akademische Weihnachtsferien
04.01.2024: Akademische Weihnachtsferien
Einzeltermine anzeigen
Übung Do 10:15 bis 11:45 wöchentlich 19.10.2023 bis 08.02.2024  2.27.2.36 Prof. Dr. Dahm 28.12.2023: Akademische Weihnachtsferien
04.01.2024: Akademische Weihnachtsferien
Kommentar

The course Theory of Elastic Waves provides a basic introduction to the theory of wave propagation, needed to understand observations and to interprete seismological data. One focus is on the mode description of body and surface waves. Fundamentals of elasticity theory and elementary solutions of the wave equation are presented in detail. I start with a one-dimensional description of waves on a string, to explain key features of free oscillation and wave modes on ”membranes” (layers). Thereby, fundamental mathematical approaches and representation theorems are introduced. Later, we come to the reflection and refraction of seismic plane waves at plane boundary layers, to guided waves and seismic surface waves. The theory of seismic sources is not covered here, as the material is extensively taught in my course Rupture Processes in Seismology and Volcanology.

Seismological analysis techniques applied to body and surface waves are described and learned with computer practicals. Examples are: Interpreting and classifying body and surface waves, recognising near and far field signals, converting pressure to ground displacement on the seabed, calculate synthetic seismograms for the Earth, amplitude ratios and polarisation of waves on the surface, true and apparent polarisation, estimation of velocity structure from spectral ratios, ambient vibration and seafloor compliance methods, dispersion analysis of surface waves, detection of anelastic damping and attenuation tomography.

Potsdam, 3 September 2023, Torsten Dahm

 

Literatur <p></p><p><span style="font-family: 'Times New Roman', serif;"><span style="font-size: medium;"><span style="color: #000000;">Dahm, T. Seismology II: body and surface waves. Lecture notes, ca. pp. 230. (will be provided as pdf)</span></span></span></p><p> </p><p><span style="font-family: 'Times New Roman', serif;"><span style="font-size: medium;"><span style="color: #000000;">Müller, G. (2007): Theory of elastic waves, (Scientific Technical Report STR ; 07/03), 228 S. https://doi.org/10.2312/GFZ.b103-07037</span></span></span></p><p> </p><p><span style="font-family: 'Times New Roman', serif;"><span style="font-size: medium;">Aki, K.; Richards, P. (2002). Quantitative Seismology. University Science Books</span></span></p><p> </p><p><span style="font-family: 'Times New Roman', serif;"><span style="font-size: medium;">Lay, Th.; Wallace, T.C. (1995). Modern Global Seismology. Academic Press</span></span></p><p> </p><p> </p>
Voraussetzungen

- Bachelor in Geophysics / Physics / Geosciences

- Basics in physics, math and programming


Strukturbaum
Die Veranstaltung wurde 3 mal im Vorlesungsverzeichnis WiSe 2023/24 gefunden:
Vorlesungsverzeichnis
Mathematisch-Naturwissenschaftliche Fakultät
Institut für Geowissenschaften
Master of Science
Geosciences (Prüfungsversion ab WiSe 2022/23)
Core Modules
GEW-MC05 - Theoretical Geophysics  - - - 1 offens Buch
Elective Modules
GEW-MC05 - Theoretical Geophysics  - - - 2 offens Buch
Geowissenschaften (Prüfungsversion ab WiSe 2010/11)
Vertiefungsrichtung Geophysik
Pflichtmodule
Theorie elastischer Wellen  - - - 3