Advanced Studies Institute on Seismological Research

Kuwait City, Kuwait

Jan. 19, 2013 — Jan. 22, 2013

Background Information

As part of its international development activities, IRIS International Development Seismology (IDS), in collaboration with IRIS Data Services, is organizing a four–day Advanced Studies Institute focusing on modern techniques in seismological research in Kuwait City, Kuwait — January 19–22, 2013.

This Institute will immediately follow the IRIS Metadata Workshop and will consist of lectures and practical exercises led by an international team of senior investigators and faculty. Participants will be selected among the participants in the Metadata Workshop, based on technical and scientific background and interest.

Separate registration is required for each workshop.

Specific topic: Determining Lithospheric Structure Using the Joint Inversion of Receiver Functions and Surface Waves

Overview

The receiver function (RF) method has proven successful at using the recordings of teleseismic earthquakes to model the timing of reverberations in the crust and upper mantle due to major seismic discontinuities directly below the recording stations (e.g. basement, Moho). Combining receiver functions with information from surface waves (SW) allows us to improve our estimates of crustal velocities and, correspondingly, the depths to the discontinuities, providing a better overall image of the lithospheric structure under a station. More sophisticated analysis, which include features such as the lithospheric lid, the lithospheric–asthenospheric boundary (LAB) and transverse isotropy in the mantle, can be introduced as necessary to fit the combined data sets. This course will serve to instruct participants in receiver function analysis, including the determination of P–wave receiver functions, RF inversions, and joint RF/SW inversions. Analysis from a number of stations in a seismic network can be combined to provide insights into the seismotectonic structure across a given region.

Faculty

  • Hrvoje Tkalcic, Australian National University, Australia
  • Andy Frassetto, IRIS, USA
  • Jordi Julia, Universidade Federal do Rio Grande do Norte (UFRN), Brazil
  • Michael Pasyanos, Lawrence Livermore National Laboratory, USA
  • Eric Sandvol, University of Missouri, USA

Agenda

January 19

Time Presentation Lecturer
9:00–9:30 AM Introduction to the Course (7.01 MB)
A brief overview of lectures and practical exercises (1.78 MB)
Tkalcic/Julia
9:30–10:30 AM Introduction and theory of receiver functions; Description of methods available to process data and prepare receiver functions (9.86 MB) Sandvol
10:45–12:00 PM Overview of research and recent results using receiver functions (21.4 MB) Pasyanos
12:00–1:30 PM LUNCH -
1:30–3:30 PM Overview of software and requirements; Installation of software and computer system checks Frassetto
4:00–6:00 PM Exercises
  • EXERCISE 1 — Preparation of structural models and synthetic waveforms including deconvolution and computation of receiver functions
  • EXERCISE 2 — Preparation of observed waveforms for selected stations including deconvolution and computation of receiver functions; preparation of dispersion data
Tkalcic

January 20

Time Presentation Lecturer
9:00–10:30 AM Introduction to receiver function inversions; Description of methods (1.78 MB) Julia
10:45–12:00 PM Stacking receiver functions; H–K method and its varietals; overview of theory, recent papers and software (12.3 MB) Frassetto
12:00–1:30 PM LUNCH -
1:30–3:30 PM Exercises
  • Questions & answers regarding Exercise 1 & 2 (Tkalcic)
  • EXERCISE 3 — Forward modelling of receiver functions using interactive forward modeller IRFFM (Tkalcic)
  • EXERCISE 4 — Basic receiver function inversion for synthetic data using reflectivity method and linearized inversion with the estimation of uncertainties (Julia)
Tkalcic/Julia
4:00–6:00 PM Exercises
  • EXERCISE 5 — H–K method using synthetic data from Exercise 1; time permitting using waveform data from Exercise 2 (Frassetto)
  • EXERCISE 6 — (time permitting) Basic receiver function inversion for synthetic data using non-­‐linear Monte Carlo inversion (Neighbourhood Algorithm) (Tkalcic)
Frassetto/Tkalcic

January 21

Time Presentation Lecturer
9:30–10:30 AM Limitation of receiver function methods; Description of surface wave dispersion and software to retrieve dispersion curves from a pre-­existing tomography model (3.83 MB)
Description of joint inversion of receiver functions and surface wave dispersion methods (29.1 MB); Overview of software
Julia/Pasyanos
10:45–12:00 PM Continuation of description of joint inversion of receiver functions and surface wave dispersion methods; Beyond the conventional methods: advanced joint inversion of receiver function and surface wave dispersion within the Bayesian inference; Advanced inversion of receiver functions taking into account the Moho dip (24.9 MB) Tkalcic
12:00–1:30 PM LUNCH -
1:30–3:30 PM Exercises
  • Questions & answers regarding Exercise 3 – 6 (Tkalcic)
  • EXERCISE 7 — Forward modelling of receiver functions and surface wave dispersion using IRFFM2 (Tkalcic)
  • EXERCISE 8 — Basic joint receiver function and surface wave dispersion inversion with the estimation of uncertainties using synthetic data from Exercise 1 and the morning lecture dispersion data presented by Pasyanos (Julia/Pasyanos/Sandvol)
All
4:00–6:00 PM Exercises
  • EXERCISE 9 — Basic joint receiver function and surface wave dispersion inversion with the estimation of uncertainties using waveform data from Exercise 2 and dispersion data presented by Pasyanos (Julia/Pasyanos)
  • EXERCISE 10 — (time permitting) Advanced Neighbourhood Algorithm RF inversion including inversion for a dip of Moho (Tkalcic)
  • EXERCISE 11 — Joint inversion of receiver function and surface wave dispersion using new data sets from participants’ networks
All

January 22

Time Presentation Lecturer
9:00–10:30 AM Exercises
  • Questions & answers regarding Exercises 7–11
  • EXERCISE 11 contd. — Continue using joint inversion techniques and applying them to new data sets from participants’ networks
  • Work on presentations
All
10:45 AM – 12:00 PM Work on presentations All
12:00–1:30 PM LUNCH -
1:30–3:30 PM Participant presentations -
4:00–6:00 PM Participant presentations; Questions & answers -

Participation

Only individuals participating in the IRIS Metadata Workshop will be considered for participation in the Advanced Studies Institute. Acceptance in the metadata workshop does not mean acceptance in the Advanced Studies Institute.

The IRIS DMS will arrange air tickets and lodging (double occupancy). Participants will be asked to share a room. Upgrades to a single room are possible, but participants will be responsible for the cost difference.

Visas and entry requirements will need to be arranged by the participant.

Letters of Invitation will be sent by the Kuwait Institute for Scientific Research.

Financial Support

There will be no registration fee to participate in this Advanced Studies Institute. Financial support is available from IRIS and will include hotel accommodation (double occupancy) and cost of meals, for those participants also attending the Metadata Workshop.

Location Details

Host

Kuwait Institute for Scientific Research

Technical Requirements

Required software

  1. Pgplot
  2. Java
  3. SAC
  4. GMT
  5. Compilers: g77, http://gcc, http://gfortran

Sponsors

IRIS DMS , Kuwait Institute for Scientific Research (KISR) and National Science Foundation (NSF) .

Important Dates and Venue

Jan. 19, 2013 — Jan. 22, 2013

Workshop will be held in Kuwait City, Kuwait.

Workshop Contacts

IRIS Contact(s)

Local Contact(s)

  • No local contact defined.