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Summary of seismology component of the course

This summary provides an overview of the components covered in a seismology course, including sources of earthquakes, different types of seismic waves, techniques for locating earthquakes, magnitude and intensity scales, focal mechanisms, and other related topics such as hazards and prediction methods.

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Summary of seismology component of the course

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Presentation Transcript

  1. Summary of seismology component of the course • Sources • Waves • Location • Magnitude/Intensity • Focal mechanisms • Other topics

  2. Sources • source models • Double couple forces • Moment tensors

  3. Waves • Notation (teleseisms) P, S = mantle phases K = outer core P wave I,(J) = inner core P and S c = reflection from the outer core pP, sP = reflections from the earth surface near the source (Lower case = reflection) PKP = P wave in mantle, outer core, mantle PcP = Mantle phase reflected from the outer core

  4. Waves • Notation (local) • Pg • Pn • P* • Near field / Far field

  5. Location • General principles • Station corrections • depth control

  6. Magnitude and Intensity • Mw, Mwp, ML, Mb, etc. • Intensity scales

  7. Focal Mechanisms Fault Plane Solutions of Earthquakes, Northeast India Kayal et al., 2006

  8. Other topics • Hazards and damaging effects, • prediction and forecasting, • instruments, networks, arrays, etc.

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