在台湾北部的火山区揭开了衰减结构
Y-P Lin1, J Y-T Ko2, B-S Huang3
1Department of Geosciences, National Taiwan University, Taipei, Taiwan.
Scientific reports
|February 27, 2024
概括
先进的地震成像揭示了台湾火山下面的岩储和热水活动. 这项研究增强了对该地区复杂的构造和岩演变的理解.
科学领域:
- 地质物理学 地质物理学
- 地震学 地震学
- 火山学 火山学是一门学科.
背景情况:
- 台湾位于菲律宾海和欧亚板块之间的复杂的构造界线上.
- 该地区表现出适度的地震性和显著的火山活动,特别是塔通火山群.
研究的目的:
- 用先进的地质物理方法研究台湾北部的区域性岩.
- 识别与火山和构造过程相关的地下结构.
主要方法:
- 使用了3D P和S波频率依赖的减弱断层扫描.
- 使用Formosa地震阵列进行高分辨率数据采集.
主要成果:
- 在台湾北部火山区和海上火山下发现了高衰减异常 (低Q),表明了热水活动和岩.
- 检测到低衰减异常 (高Q) 在Ryukyu潜伏区前弧,可能是由于海水透或地幔水化导致的蛇形化.
结论:
- 这项研究提供了对台湾北部地特性和岩演变的关键见解.
- 这些发现有助于更深入地了解该地区的俯冲,火山活动和流体动力学之间的相互作用.
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