2010年のマウレ地震の滑落は,アンデス山脈の潜水地帯の地震前ロックと相関しています
Marcos Moreno1, Matthias Rosenau, Onno Oncken
1Helmholtz Centre Potsdam, GFZ German Research Centre for Geosciences, Telegrafenberg, Potsdam 14473, Germany.
Nature
|September 11, 2010
まとめ
2010年のモール地震.
科学分野:
- 地震科学 地震科学 地震科学
- 地質物理学 地質物理学とは地質物理学です.
- テクトニクス (地質学) とは
背景:
- 2010年のモール地震は,アンデス山脈の潜水地帯の地震が活発な地域で発生しました.
- このメガトラスト地震は,地震発生前の高い地震潜在力を有する成熟した地震の隙間を破裂させた.
- 密集した地検監視により,プレートインターフェースのロック状態の前例のない解像度が提供されました.
研究 の 目的:
- インターセイミックプレートロックとコセイミックスリップの間の空間的相関を評価する.
- 地震前ロックが将来の地震の破裂を予測できるという仮説を検証するために.
- ロッキング分布と地震の破裂行動の関係を理解するために.
主な方法:
- グローバル・ポジショニング・システム (GPS) のデータを逆転して,地震間ロックをマップする.
- 2010年のモール地震によるコセシミック・スリップ分布の分析.
- 地震前ロックとコセイズミックスリップパターンの間の空間的相関分析.
主要な成果:
- 地震のスリップ分布は,観測されたインターセイミックロックパターンと密接に一致しました.
- 高い地震性スリップ (アスペリティ) は,高い前地震性ロック領域で発生しました.
- 破裂は,アスペリティの間のクレイピングゾーンを通って広がり,プレストレスの減少した領域で停止しました.
結論:
- 前地震ロック分布は,将来の地震のスリップの強力な指標です.
- 地表観測は,将来の大きな地震の地震の可能性を予測することができます.
- スリップの異質性を理解することは,潜流ゾーンにおける地震の行動を予測する鍵です.
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