The Use of Surface Waves for Near Surface Velocity Model Building

By: Laura Valentina Socco



Instructor

Prof. Laura Valentina Socco (Politecnico di Torino, Italy)

Duration

29–30 April 2021:
9:00AM-1:00PM CEST
4 hours/day


Disciplines

Near Surface – Seismic Methods

Level

Intermediate

Language

English

EurGeol

4 CPD points



Keywords

SURFACE WAVES 2D 3D ALGORITHM DISPERSION INVERSION TOMOGRAPHY PASSIVE S-WAVE P-WAVE WAVE PROPAGATION


Course Format

The EAGE Interactive online short courses bring carefully selected courses of experienced instructors from industry and academia online to give participants the possibility to follow the latest education in geoscience and engineering remotely. The courses are designed to be easily digested over the course of two or three days. Participants will have the possibility to interact live with the instructor and ask questions.



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Course Description

The use of surface wave analysis for near-surface (down to about 600 m) characterization has dramatically increased in the last two decades thanks to the possibility offered by this technique for shear wave velocity estimation. New tools and approaches have been developed for surface wave data acquisition and analysis to make the method robust and suitable to investigate complex geological settings in both soil and hard rock conditions. The course will supply an overview of the method starting from surface wave propagation and dealing with acquisition, processing and inversion of surface wave data. Advantages and weaknesses of different approaches as well as requirements for data acquisition and analysis will be discussed. Recent developments including methods to estimate P-wave velocity and surface wave tomography for near surface application will be presented with example of results and applications to different near-surface problems.



Course Objectives

The course will provide the participants with a wide overview of the main steps of the surface wave method: acquisition, processing and inversion. Different approaches with their potentialities and limitations will be discussed through many practical examples to enable the participants to acquire knowledge about the requirements and design of data acquisition, processing methods and inversion algorithms for different applications from small-scale engineering problems towards large-scale exploration and static corrections.



Course Outline

  • Surface wave propagation in homogeneous and layered media;
  • Geometrical dispersion, modal curves and their properties;
  • The use of surface wave for near surface characterisation: the method outline;
  • Data acquisition: on purpose acquired active data, other active data, passive data;
  • Processing: from raw data to dispersion curves, multichannel methods, 2-station methods;
  • Inversion: global and local search methods (1D, pseudo-2D/3D), higher modes, tomography, skin depth and VP estimation;
  • The final results: resolution and uncertainties;
  • The requirements for acquisition, processing and inversion.


Participants' Profile

Near-surface geophysicists and exploration geophysicists interested in near-surface velocity models.



Prerequisites

Participants should have basic knowledge of sampling principles, spectral analysis and inversion of seismic data.



About the Instructor

Prof. Laura Valentina Socco 

Laura Valentina Socco is Full Professor in Applied Geophysics at the Politecnico di Torino, Italy, where she took her PhD. In 2013 Prof. Socco has been chosen as Honorary Lecturer by the SEG. In 2014 she has received the Conrad Schlumberger Award (EAGE). In 2019 she has received the Outstanding Educator Award from SEG. She has been Editor in Chief of Geophysics from 2017 to 2019.

In the last twenty years, she has focused her research work on surveying techniques based on the propagation of seismic surface waves for estimating subsurface velocity models. In this framework she has developed a wide set of processing and inversion methods that have been successfully used in a broad variety of applications ranging from stochastic seismic response estimation, geotechnical characterization, mineral and hydrocarbon exploration, geohazard, FWI.

Prof. Socco has been principal investigator of several research projects financed by national and international institutions and companies. Since 2007 she has been in charge of the Applied Geophysics Lab of DIATI. Prof. Socco is author of more than 130 scientific publications in peer reviewed journals and conferences. She has been awarded with a honourable mention in the category best paper in Geophysics in 2012, 2013 and 2016. She has been member of Research Committee and Education Committee of EAGE and DL and Publication Policy Committees of SEG, and she has been vice-chairperson and chair-person of the Near Surface Division Committee of EAGE and member of EAGE Board (2014-2016). She has been Associate Editor (2003-2013), Assistant Editor (2013-2017) of Geophysics and she has been Associate Editor (2006-2013) of Near Surface Geophysics. She has been Convener of several international workshops. She has been Guest Editor of two special issues of Near Surface Geophysics, published in 2004 and 2011, respectively.

Prof. Socco has been Vice-Director of Politecnico Doctorate School (2007-2012) and is chair of the Education Program (1 BSc and 2 MSc programs) in Environment and Land Engineering at Politecnico di Torino since October 2018.





EAGE supports its members and the Geoscience community in general by offering a 35% discount on the regular prices for our Interactive online short courses during these difficult times.

€125

EAGE Member price

€180

Non-Member price

*Non-member price for this product does not include EAGE membership.



Economic Hardship Programme

EAGE also aims to assist its long-term members who are currently unemployed by offering a contribution towards educational programmes. Members who meet the requirements of the programme can attend any EAGE course for a discounted fee equal to €75. Click here to read more and apply.


Cancellation and Changes Policy

Registration fees will be refunded as follows:
  • Cancellation received before 8 April 2021: Refund will be processed after the event had ended. Amount will minus an administration fee of €35 per person.
  • Cancellation received on or after 8 April 2021: No refund will be made. 
  • Transferring of your registration to another participant will cost €35, as administration fee, plus any differences in delegate types, where applicable (for instance when changing a registration from a member to a non-member). 
  • For an overview of all EAGE Registration Terms and Conditions please click here to download.