トリガーされた地震性を理解し管理するためのプロセスベースのアプローチ
Bradford H Hager1, James Dieterich2, Cliff Frohlich3
1Earth Resources Laboratory, Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA, USA. bhhager@mit.edu.
Nature
|July 29, 2021
まとめ
人間の活動が地震を引き起こし得る. この研究は,イタリアの油田で成功裏に適用された,誘発性地震管理のための地下データとモデルを使用する新しい方法を開発しました.
科学分野:
- 地理学
- 地震科学
- 石油工学
背景:
- 液体注入などの人間の活動により 地表下のストレスが変化することで 地震が引き起こされます
- 誘発性地震の管理のための現在の規制枠組みは,しばしば経験的であり,成功は限られている.
- 初期の研究では 流体圧サイクルが地震を制御できると示唆されました
研究 の 目的:
- 誘発性地震の管理のための多学科的方法論を開発し,実施する.
- 地質学と地震源の物理モデルを校正するために,包括的な地下データを活用する.
- 以降の地震観測に対して予測モデルを検証する.
主な方法:
- 新しい学際的なアプローチの開発とテスト
- 地質学と地震源の物理モデルを詳細な地下情報を使って校正する.
- カリブレーション後の地震観測との比較によるモデルの検証
主要な成果:
- イタリア南部のVal d'Agri油田でのメソドロジーの成功
- 生産する炭化水素のフィールドで誘発された地震性の効果的な管理を証明した.
- プロセスベースの方法は地震制御に成功しました.
結論:
- プロセスベースのデータ主導の方法論は,誘発性地震を成功裏に管理できます.
- このアプローチは,経験的な規制の枠組みに より堅固な代替案を提供しています.
- この方法論は,地球規模での誘発性地震の緩和に広く適用される可能性があります.
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