2019 年 11 月
EAGE Education Tour 13 (EET13) 開催のご案内(公社)物理探査学会
国際委員会
European Association of Geoscientists & Engineers (EAGE)の主催する教育プログラム EAGE Education Tour (EET) が東京で開催されることとなりました。 このプログラムは、EAGE の著名な講師が世界各地において、最新の技術トピックスについての講義を行うものです。 今回の講義では、弾性波探査データを用いた地下の物性値の推定について、実用的な側面からの解説を聞くことができます（詳しくはこちら）。実務に携わる物理探査技術者にとって大変有意義な講義と思われます。関心のある方は奮ってご参加ください。

記
テ ー マ：Velocities, Imaging, and Waveform Inversion - The
Evolution of Characterizing the Earth's Subsurface
講師：Ian Jones (ION, UK)

日時：2019 年 12 月 11 日（水）9:30 - 18:00

会場：国際石油開発帝石株式会社 セミナールーム
赤坂 Biz タワー36 階※参加申込をされた方には入館に関する案内を別途お送りします。

申込方法：EAGE のサイトからお申し込みください。
受 講 料：
一般

学生

EAGE 会員

75 ユーロ50 ユーロ

EAGE 非会員

150 ユーロ

125 ユーロ※非会員料金には EAGE の年会費（2020 年分）が含まれます。詳しくは EAGEのサイトをご覧ください。
申込締切：2019 年 11 月 29 日
ご不明な点は学会事務局までお問い合わせください。
公益社団法人

物理探査学会

電話：03-6804-7500、電子メール：office@segj.org
以上Course description

Ian Jones' two-day course 'An introduction to migration and velocity modelbuilding' covers much of the ground that this EET will cover, as does Etienne
Robein’s EET 4 course on imaging, Tariq Alkhalifah's EET10 course and Jean
Virieux’ SEG DL course on FWI. However, this new EET will be a fusion of thepractical industrial elements of the above courses, concentrating on theorigin and nature of the geological complexities that give-rise to imaging
problems, as well as a physical (rather than mathematical) understanding of
subsurface parameter estimation, and will also look at some possible future
directions.

The course is designed for: practising geoscientists who desire to better
understand the principles and limitations of both current and emerging
technologies involved in subsurface parameter estimation and imaging, andgeoscience students. Following this course, participants should ideallyunderstand how contemporary velocity estimation methods work, and what
approximations are involved in obtaining computationally tractablesolutions.

In using sound waves to characterize the Earth's subsurface, we can employ
ray-theory and/or wave-theory, and both migration algorithms andparameter estimation schemes employ one or other of these theoreticaldescriptions. In this course, we'll review the evolution of the industry'sapproaches to building earth models via velocity estimation and imaging,outlining the evolution from ray tomography to full waveform inversion, andlook towards the emerging possibilities for replacing imaging techniqueswith direct subsurface parameter inversion methods.

The approach will be mostly non-mathematical, concentrating on an
intuitive understanding of the principles, demonstrating them via casehistories, and will be divided into the following sections:- dealing with the near surface- the effects of strong vertical velocity contrasts- the effects of strong lateral velocity contrasts- waves versus rays
- model building using ray methods (tomography)- model building using wavefield extrapolation methods (FWI)- data examples and comparisons- future developments

The first three sections outline the nature of the problems we face whenbuilding images representing subsurface impedance contrasts, and the next
three deal with the technology we deploy to address the problems. Inaddition, I’ve included three appendices to outline: the historicaldevelopment of model building; anisotropy; and pre-processing
considerations for complex imaging. Several of the individual chapters build
on a series of recent tutorial papers which I published in First Break.
However, only the key points from these tutorial papers are included, so I
refer readers to the original papers for more detail and/or a range of real
data examples for each of their topics.

Due to space and time constraints in the EET format, Ian Jones had to omit
or limit coverage of various topics, including: migration of multiples,
Marchenko and inverse scattering series migration, joint
migration-inversion, least-squares migration, and uncertainty estimation.