Report on activities performed during the PhD period
Author: Zhen Xing Tutor: Prof. Alfredo MazzottiPhD School in Earth Sciences
Department of Earth Sciences, University of Pisa Date: Apr. 27th, 2018
For the main PhD studies, please refer to my PhD thesis (Two-grid full waveform surface wave inversion by means of a genetic algorithm) abstract, which has been uploaded to the ETD (Electronic theses and dissertations) system of the University of Pisa. The abstract is publicly accessible. This report records other activities, such as the course following and the congress participation, carried out during my PhD period.
I. Courses Academic year
Name of the course Course
location Used language Duration in hours Instructor 1st Introduction to scientific and
technical computing in C CINECA, Italy Italian 24 Mr. Federico Ficarelli 1st OpenCPS training course and
marine data deghosting Dolphin Geophysical, UK
English 24.5 Dr. Sergio Grion and Dr. Rob Telling
1st Introduzione alla statistica University of Pisa, Italy
Italian 7 Dr. Mattia Aleardi
2nd Introduzione alla modellistica fluidodinamica per le
Geoscienze
University of Pisa, Italy
Italian 24 Prof. Antonello provenzale et al.
2nd Linear and nonlinear hyperbolic systems
University of Pisa, Italy
English 24 Prof. Guy Metivier
3rd The nitty-gritty of academic writing in English. Writing workshop for both experienced and young academics
CLI,
University of Pisa, Italy
English 20 Dr. Luisa Panichi
3rd English of the C1 level CLI,
University of Pisa, Italy
English 60 Ms. Elizabeth MacDonald
3rd Theories and practices of
seismic imaging University ofPisa, Italy Italian 14 Dr. Nicola Bienati
II. Certificates
III. Internship
Period From Jun. 13th, 2015 to Sept. 26th, 2015
Entity and location
Dolphin Geophysical Ltd, Brockbourne house, 77 Mount Ephraim, Tunbridge Wells, Kent, TN4 8NG, UK
Supervisor Dr. Sergio Grion Main
activities and results
The following results were delivered. (1) Comparison of normal moveout, redatum and seismic interferometry algorithm for near-offset seismic data extrapolation. (2) High resolution Radon transform for receiver deghosting. (3) Rough sea deghosting. (4) Acceleration of Radon transform codes.
IV. Presentations at congresses and companies
Date Name of the presentation Name of the
congress or company
Location Type of the presentation Jun. 11 – 14,
2018
Two-grid genetic algorithm full waveform inversion of surface waves: two actual data examples
EAGE 2018 Copenhagen, Denmark
Oral
December, 2017
Two-grid full waveform inversion of surface waves with genetic algorithm – part 2
ENI S.p.A. Milan, Italy Oral
Sept. 3 – 7, 2017
Surface wave FWI on complex models: the robustness of the inversion to assumptions and forward modelling approximations Near Surface Geoscience 2017 Malmo, Sweden Oral Jun. 12 – 15,
2017 Two-grid full waveform Rayleigh wave inversion by means of genetic algorithm with frequency marching
EAGE 2017 Paris, France Poster
March, 2017 Two-grid full waveform inversion of surface waves with genetic algorithm – part 1
ENI S.p.A. Milan, Italy Oral
Sept. 4 – 8, 2016
Rayleigh wave modelling complexities in the perspective of full waveform inversion of surface waves - synthetic examples Near Surface Geoscience 2016 Barcelona, Spain Oral
March, 2015 Post-stack seismic well tie Edison S.p.A. Milan, Italy Oral Nov. 25 – 27,
2014
Comparison among sparse Radon transforms towards an MPI implementation 33rd annual national meeting, GNGTS Bologna, Italy Oral
V. Paper list
Xing, Z., Rappisi, F. and Mazzotti, A. [2018] A new workflow for surface wave FWI combining genetic algorithm and gradient-based optimization algorithms. Submitted to Near Surface Geoscience 2018, Porto, Portugal, Expanded abstracts.
Xing, Z. and Mazzotti, A. [2018] Two-grid genetic algorithm full waveform inversion of surface waves: two actual data examples. Accepted by EAGE 2018, Copenhagen, Denmark, Expanded abstracts. (Winner of
the full delegate pass financed by the Sezione Italiana EAGE-SEG to the conference of EAGE 2018.)
Xing, Z., Rappisi, F. and Mazzotti, A. [2017] Near-surface model prediction and refinement by full waveform surface wave inversion. 36th annual national meeting, GNGTS, Trieste, Italy, Expanded abstracts, 596-599,
ISBN: 978-88-940442-8-7.
Xing, Z. and Mazzotti, A. [2017b] Surface wave FWI on complex models: the robustness of the inversion to assumptions and forward modelling approximations. Near Surface Geoscience 2017, Malmo, Sweden, Expanded abstracts, doi: 10.3997/2214-4609.201702019.
Xing, Z. and Mazzotti, A. [2017a] Two-grid full waveform Rayleigh wave inversion by means of genetic algorithm with frequency marching. EAGE 2017, Paris, France, Expanded abstracts, doi: 10.3997/2214-4609.201701412.
Xing, Z. and Mazzotti, A. [2016] Rayleigh wave modelling complexities in the perspective of full waveform inversion of surface waves - synthetic examples. Near Surface Geoscience 2016, Barcelona, Spain, Expanded abstracts, doi: 10.3997/2214-4609.201601909.
Xing, Z., Stucchi, E., Mazzotti, A. and Tognarelli, A. [2014] Comparison among sparse Radon transforms towards an MPI implementation. 33rd annual national meeting, GNGTS, Bologna, Italy, Expanded abstracts,
120-125, ISBN: 978-88-940442-3-2.
VI. Teaching
Teaching assistant of the following courses.
Period Name of the course Course location Instructor
February 2015 – Present
Numerical analysis of seismic data using MATLAB
University of Pisa, Italy Prof. Eusebio Stucchi February 2015 –
Present
Seismic data processing using ProMAX
University of Pisa, Italy Researcher Andrea Tognarelli
VII. Co-advisorship
Co-advisor of the following theses.
Rappisi, F. [2017] Inversione di onde di Rayleigh mediante curve di dispersione e algoritmi di full waveform inversion locale. Master's thesis, University of Pisa. (Advisor: Prof. Alfredo Mazzotti)
Damiani, I. [2017] Modelling agli elementi spettrali per analisi e diagnosi di onde superficiali. Master's thesis, University of Pisa. (Advisor: Prof. Alfredo Mazzotti)
VIII. Membership
2015 – Present Member of the Society of Exploration Geophysicists (SEG)
IX. Position
