アルバータ州Quest二酸化炭素回収・貯留プロジェクトにおける誘発地震
Induced seismicity at the Quest Carbon Capture and Storage project, Alberta (原題)
James Phillip Verdon, C. S. Lim, Germán Rodríguez‐Pradilla
🤖 gxceed AI 要約
日本語
カナダ・アルバータ州のQuest CCSサイト近傍で2026年に発生したM4.0地震を、誘発地震評価フレームワークで解析。CO2圧入が原因と結論づけ、CCSによる体感誘発地震の初の既知事例とした。 seismogenic indexモデルと極値理論モデルが事前にM4.0を予測可能だったと示し、CCS操業のリスク管理とモニタリング設計に示唆を与える。
English
Using an induced-seismicity assessment framework, the authors attribute the 2026 M≥4.0 earthquakes near Alberta's Quest CCS site to CO2 injection—the first known felt induced seismicity from CCS. Two forecasting models (seismogenic index and extreme value theory) would have predicted the events, supporting operational decision-making and hazard mitigation for future CCS projects.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
日本はCCSの商業化と法的枠組み整備を進めており、誘発地震リスクは社会的受容性と環境影響評価の重要論点。本稿はモニタリング・予測手法の実装可能性を示し、国内CCS事業のリスク管理や規制設計に直接示唆を与える。
In the global GX context
As CCS scales globally under net-zero pathways, this study provides the first documented case of felt induced seismicity from CO2 injection and demonstrates that forecasting tools can inform operational decisions. It adds critical evidence for regulators and operators designing monitoring and mitigation requirements for CCS.
👥 読者別の含意
🔬研究者:CCS誘発地震の実例と予測モデルの有効性を示す重要な実証研究。
🏢実務担当者:CCS事業者はモニタリング強化と誘発地震予測モデルの導入を検討すべき。
🏛政策担当者:CCS規制において誘発地震リスク評価とモニタリング義務化の必要性を示唆。
📄 Abstract（原文）
The 1st April and 9th May 2026 M L ≥ 4.0 earthquakes in central Alberta were felt across the city of Edmonton. The events were located near to Carbon Capture and Storage (CCS) operations at the Quest site. In this study we use an established induced seismicity assessment framework, applied with respect to the Quest CCS site as well as other oilfield activities in the area, to assess whether the events were induced. We found that these earthquakes were likely caused by CO 2 injection at Quest, making this the first known example of felt induced seismicity caused by CCS operations. We have inverted regional seismic monitoring data to compute event depths and source mechanisms, finding that the events were located in the upper portion of crystalline basement, with oblique strike-slip/reverse focal mechanisms. We apply several induced seismicity magnitude forecasting schemes to the earthquake sequence in order to evaluate whether the seismic hazard posed by these events could have been identified. We found that two models – the seismogenic index model and a model based on extreme value theory – would both have forecasted the M L 4.0 events prior to their occurrence. These results demonstrate that induced event forecasting methods can be used to support operational decision-making. We conclude by considering options for ongoing induced seismicity hazard mitigation, both at the Quest CCS site, and more generally at any future CCS operations.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1016/j.ijggc.2026.104796first seen 2026-09-23 05:01:48
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