在轴海拔下面的不对称的岩管道系统基于对地震数据的完全波形反转
Jidong Yang1, Hejun Zhu2,3, Zeyu Zhao4
1National Key Laboratory of Deep Oil and Gas, School of Geosciences, China University of Petroleum (East China), Qingdao, Shandong, China. jidong.yang@upc.edu.cn.
Nature communications
|June 4, 2024
概括
研究人员利用地震数据绘制了轴心海山下面的岩储和管道的地图. 他们发现了一个新的西部岩储,揭示了火山的管道系统和喷发路径的洞察力.
科学领域:
- 火山学 火山学是一门学科.
- 地质物理学 地质物理学
- 海洋地质 海洋地质学
背景情况:
- 火山喷发的动态是由岩管道系统架构控制的.
- 了解地的岩储存库和导管对于大多数活火山来说至关重要,但具有挑战性.
- 轴性海山最近在1998年,2011年和2015年爆发的历史.
研究的目的:
- 为了拍摄轴心海山下面的浅岩管道系统.
- 为了研究岩储配置和喷发动态之间的相关性.
- 为了识别近期喷发的养岩通道.
主要方法:
- 2D多通道地震线的多参数全波形反转.
- 高分辨率的P波速度,衰减,温度和部分融化的成像.
- 对地震数据的分析,以划分岩储库和导管.
主要成果:
- 在上层地中确定了多个岩储库,包括一个新发现的西部储库.
- 估计最大融化分数在主要岩储 (MMR) 中为15-32%,在卫星储中为10-26%.
- 图像显示了MMR以下的养管道 (~4-11%融化) 和连接到喷发裂的低速度喉.
结论:
- 划出了一个不对称的浅水管系统在轴海拔下.
- 提供了对最近火山爆发造成的岩通道的见解.
- 增强对海底火山管道和喷发过程的理解.
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