Wave physics SIO202B, Seismology, April-May 2016

Peter Gerstoft, 534-7768, gerstoft@ucsd.edu

We meet at the times below in Spiess 330

Text: Introduction to Seismology (2nd edition) by Peter Shearer. Likely chapters 4-7. It is available here under UCSD license

This course is intended as an introduction to exploration seismology. Our goal is to provide a general overview of the basics of exploration seismology. The emphasis will be practical (how things are actually done), rather than on detailed theory or derivations. This year we will focus on processing the data acquired in the experiment and derive the necessary theory for doing so.

  • 20 April 12:10-1:30p: We discusses traveltimes in a two layered acoustic media and NMO (section 7-7.2 in Shearer).
  • 24 April 7am-12p Experiment
  • 27 April 12:10-1:30p
  • 4 May 12-1:30p
  • 6 May
  • 11 May 12:10-1:30p
  • 13 May
  • 1 June 12-1:20p
  • 3 June

    OLD

    Wave physics SIO202B, Seismology, April-May 2015

    Peter Gerstoft, 534-7768, gerstoft@ucsd.edu

    We meet F from 2 to 3:20pm in Spiess 330

    Text: Zhou, Practical Seismic Data Analysis and occasionally Oz Yilmaz: Seismic Data Analysis.

    This course is intended as an introduction to exploration seismology. Our goal is to provide a general overview of the basics of exploration seismology. The emphasis will be practical (how things are actually done), rather than on detailed theory or derivations.

  • 3 April, Ch 1, OZ Intro
  • 10 April, Ch 2,
  • 17 April, Ch 3-3.4
  • 24 April, Ch 3.5-4.2
  • 25 April Experiment?
  • 1 May, 4.3-4.5
  • 8 May, 5.1-5.3
  • 15 May, 5.4-5.5
  • 22 May, 6.1-6.3
  • 29 May, 7.1-7.3
  • 5 July, 7.4-7.5

    Assignments

    Just email the code to me (I dont need anything else).
    Call the files LastName_ExXX.
    Homework is due 8am on Friday. That way we can discuss in class.
    1. (due April 3) Read OZ Intro.
    2. (due April 9) Exercise 4.8 in Peter Shearers book. Text: Introduction to Seismology (2nd edition) by Peter Shearer. Likely chapters 4-7. It is available here under UCSD license
  • 2 April, Chapter 4.1-4.2
  • 4 April, seismac, Chapter 4.2-4.3
  • 9 April, Heliosesmology, 4.9-4-10
  • 11 April, seismometers Travel time curves, 4.4-4.7
  • 18 April, reflection seismic, beamforming.
  • 2 May, Beamforming , Chapter 5.2.,
  • 7 May, KATIE fracking Chapter 5.2, 5.3, 5.7
  • 16 May, MADDIE tsunamis Chapter 5.7
  • 23 May, AJ:T-phases Chapter 7.1-7.2, 6.3.1-6.3.3 ch7slides.pdf
  • 30 May, YEWEI:liquefaction, Chapter 7.3-7.5

    Assignments

    Just email the code to me (I dont need anything else).
    Call the files LastName_ExXX. If I ask to redo some part of do it fast.
    Homework is due 8am on Wednesday. That way we can discuss in class.
    1. (due April 3) Read Chapters 1-3, come and ask one seismic question.
    2. (due April 9) Exercise 2.3 (dont do next year), 3.7 (computer), 4.1
    3. (due April 18) Exercise 4.9 (computer). For 4.9 use the attached layerxt. raytracer layerxt.m, velocity model PREM.
      Assuming a uniform spherical earth (choose good parameters), compute the P, PP, and PKP traveltime curves. Discuss the results (where does it fail...).
    4. (May 16) Exercise 5.2
    5. (May 30) Chile Earthquake: Group 1:Plot seismograms, band-filtered; compare with theoretical travel times Use TA or other arrays Chile Earthquake: Group 2: Beamform using TA to get slowness spectra
    Presentations
    4 April, NED -seismac
    9 April, KC - helioseismology
    11 April, ERIC - seismometers
    16 May MADDIE - tsunamis
    7 May, KATIE - fracking
    23 May, AJ - T-phases
    30 May, YEWEI - liquefaction

    Mini research topic

    1. Liquifaction
    2. Microseisms
    3. Earths' hum
    4. Nolvolcanic tremor
    5. Gahydrates
    6. Coda
    7. predicting EQ
    8. Moonquakes
    9. Ricther scale
    10. Fracking
    11. C02 sequestration
    12. Nuclear monitoring system (CTBT)
    13. T-phases
    14. Simulating earthquake propagation
    15. Seismac (Ned)
    16. Inge Lehman
    17. Helioseismology
    18. Polar seismology
    19. Inner core
    20. Tsunami

    OLD

    2013

    Plan/Diary

    1. 3 April, Chapter 4.1-4.2
    2. 5 April, Sumatra earthquake, Chapter 4.2-4.3
    3. 10 April, Christian seismac. Travel time curves
    4. 12 April, Tim, Seismic loads on structures. 4.4-4.7
    5. 17 April, Cynthia, Simulating earthquake propagation.4.9-4-10
    6. 19 April, Travis, Hum. Chapter 5.2., 5.3
    7. 24 April, Dieter, Nuclear monitoring system (CTBT). Chapter 5.7
    8. 26 April, Mike C02 sequestration.
    9. 1 May, Dan Fracking. Chapter 7.1-7.2, 6.3.1-6.3.3 ch7slides.pdf
    10. 3 May, Khan, Ricther scale. Chapter 7.3-7.5

    Assignments

    1. (due April 3) Read Chapters 1-3, come and ask one seismic question.
    2. (due April 12) Exercise 2.3, 3.7 (computer), 4.1
    3. (due April 19) Exercise 4.9 (computer). For 4.9 use the attached layerxt. raytracer layerxt.m, velocity model PREM.
      Assuming a uniform spherical earth (choose good parameters), compute the P, PP, and PKP traveltime curves. Discuss the results (where does it fail...).
    4. (due April 26) Exercise 5.2 (computer).

    Plan/Diary

    1. 23 April, Sumatra earthquake, Chapter 4.1-4.2
    2. 2 May, Amal seismac, Chapter 4.3-4.7, 4.9-4.10
    3. 9 May, Eric: predicting earthquakes. Chapter 4+ 5.1-5.3 (lightly)
    4. 14 May, (Oliver Carriere) Ben: Gashydrates, Chapter 7
    5. 16 May, (Oliver Carriere) Chapter 7 ch7slides.pdf
    6. 21 May, Chapter 9.1-9.3, "parts of Ch 8" surfacewaves.pdf
    7. 23 May, Linhai: Coda, Chapter 9.1-9.4, 8.1-8.3
    8. 30 May, 9.5, 9.7,9.9
    9. 4 June, Andrew Mullen: Venus transit
    10. 6 June, Andrew Sander: Microseisms

    Assignments

    1. (due April 23) Read Chapters 1-3, come and ask one seismic question.
    2. (due May 2) Exercise 2.3, 3.7 (computer), 4.1
    3. (due May 9) 4.4 , 4.9 (computer). For 4.9 use the attached layerxt raytracer layerxt.m PREM
    4. (due May 21) (Olivier might modify this) Exercise 7.2, 7.3, 7.1with this addition: construct a synthetic seismogram of N receivers in a one layer with thickness h and sound speed c using just geometric rays for direct, reflected and headwave (as done in class, ie neglecting amplitude). Convolve with the vibroseis signal. Correlate with vibroseis.
    5. (due June 4) 9.3, 9.4, 9.6(first four Earthquakes), 9.7, 9.9 , 9.11, and 9.12
    6. (due June 6)