シュマギンとヤカタガの地震隙間におけるストレスの蓄積,アラスカ州
まとめ
アラスカでストレスの蓄積
科学分野:
- 地質物理学 地質物理学とは地質物理学です.
- 地震学 地震学とは
- プレート・テクトニクス (プレート・テクトニクス)
背景:
- アラスカ・アレウシアの弧は,大きな推力地震に弱い.
- シュマギンとヤカタガの地震の隙間は,高リスク地域として特定されています.
- ストレスの蓄積を理解することは,地震の予測に不可欠です.
研究 の 目的:
- 1980年から1985年の間にシュマギンとヤカタガの地震の隙間におけるストレスの蓄積を測定するために.
- これらの地域における将来の大きな推力地震の可能性を評価する.
- アラスカ・アレウチアン湾の潜水過程の性質を調査する.
主な方法:
- シュマギンとヤカタガの地震の隙間で三角調査が行われました.
- ストレスの蓄積を検出するために,地質学的データを分析しました.
- プレート収束率と沈下モデルが検討された.
主要な成果:
- シュマギンのギャップでは,有意なストレスの蓄積は検出されなかった.
- ヤカタガのギャップにおけるストレスの蓄積は,プレート収束率と一致していた.
- ヤカタガにおける最大圧縮の方向は,潜在的に斜面の収束を示唆した.
結論:
- シュマギンの隙間におけるサブダクションは,アセイミックまたはエピソード性である可能性があります.
- ヤカタガのギャップはプレート構造に一致するストレスの蓄積パターンを示しています.
- アセイミックまたはエピソード的サブドクションと斜め収束を理解するためにさらなる研究が必要です.
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