ChattingWith: Intervista a A. Vesnaver & E. Denich (INOGS, Trieste).
Pubblicato il 29 ott 2020

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SEG UNIVERSITY OF PERUGIA CHAPTER EXPERIENCE AT IMAGE 2022 IN HOUSTON

The year that is approaching to finish, 2022, started full of positive hopes to be back doing congresses and seminars in presence and, finally, met people and professionals constrained to meet only online due to the worldwide spreading pandemic in 2020 and
2021. The Chapter is composed by newly joined students and more experienced ones who
composed the previous boards. Those preserved the worthwhile aspects from the pandemic work time, such as the flexibility and efficiency resulting from different time zones where each member comes from, and pushed the From December 2021, new Officers have been elected with a list of aims to train throughout the year of the charge.

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SEG Geophysics Field Camp in Southern Italy 2022

We are pleased to announce that applications for “SEG Geophysics Field Camp in Southern Italy 2022: Breathing Supervolcano” are open!

HOW TO APPLY: Applications are open for the SEG Geophysics Field Camp in Southern Italy 2022! Send your Curriculum Vitae and a Motivation Letter to unina.seg@gmail.com with subject “Name Surname – Field Camp Application”.
Applications will close on August 24th at 11:59 pm (CEST). Places will be assigned on CV and motivation letter basis.
You will receive the reply by August 28th. Payment in full is required to book, and your place will not be confirmed until your payment has cleared. Further information for payments will be provided in the acceptance mails. If you do not respect the payment deadline, the place will be assigned to another applicant. The fee is non-refundable under any circumstances.

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EAGE – NEAR SURFACE GEOSCIENCE 2022

On behalf of the EAGE Near Surface Geoscience Division, I cordially invite you to attend the Near Surface Geoscience Conference & Exhibition to be held in Belgrade, Serbia from 18-22 September 2022.

We are pleased to announce that after our successful virtual conference in 2020 and our first ever hybrid in Bordeaux in 2021, we will return in-person to Belgrade and host it for the first time there. For the NSG2022, we’ll introduce the first of its kind or rebranded 3rd Conference on Airborne, Drone and Robotic Geophysics along with the 28th European Meeting of Environmental and Engineering Geophysics, and the 4th Conference on Geophysics for Mineral Exploration and Mining in this attractive region of Europe.

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What are the main applications of Seismic Inversion in your research centre?

A.V. – In our team, two research trends have been living together for 10/20 years:

  • Seismic tomography;
  • Seismic modeling (the major international expert is Mr. “Jose Carcione”).

Considering these two branches of geophysics, which we have been working for about a year and a half to build our own approach to full waveform inversion. We do not want to replicate what already exists but look for new ways to reduce computational cost.

In particular, we have been thinking since the beginning to develop a parallel code. We have proposed some projects to keep multi-year funding of the ERC (European research council) and other public or private investors.

In your opinion, what are the future goals of Seismic inversion?

E.D. – In my opinion, researchers have recently been developing parallel algorithms of FWI, using tools such as High-Performance-Computing to implement Machine Learning techniques to analyze Big data (i.e. genetic algorithms).

A.V. – in the future, we will not have to limit ourselves to estimating only the P speeds but we will have to work more on the elastic front and extend the analysis also to the inelastic field. We could also get good results on the anisotropy front, but for the moment, I remain a bit skeptical. With a view to reducing calculation times, as Eleonora said, I believe that artificial intelligence is a very promising new frontier.

As an old physicist, I love this technique very much. I hope that the use of artificial intelligence is a way to improve the physical / analytical knowledge of the problem, constituting a more robust approach to represent the nature that surrounds us.

 You both mentioned parallel computing, artificial intelligence, machine learning; what has been the impact of these technologies on today’s geophysics?

E.D. – nowadays the massive use of artificial intelligence has almost become a fashion. As Aldo said, techniques such as Neural Networks should not be used immediately. First, it is necessary to try to simplify the problem from an analytical point of view, defining sensible optimization functions. Already from the beginning, you can do a lot without immediately resorting to super calculators.

A.V. – I absolutely agree. I would like to add a historical note … I remember that in the 90s, expert systems were very fashionable, it seemed that these would be the future of Geophysics. In reality, after 10 years of talking about it, the revolution has not been seen, now there has been 20 years in which no one has spoken about it anymore.