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在2023年大气-河流风暴中恢复地下水的依赖深度的地震探测

Shujuan Mao^1,2, William L Ellsworth¹, Yujie Zheng³

¹Department of Geophysics, Stanford Doerr School of Sustainability, Stanford University, Stanford, CA, USA.

Science (New York, N.Y.)

|February 13, 2025

概括

在加利福尼亚,强烈的风暴补充了地表水, 但只能部分恢复地下水. 深层含水层显著枯竭,强调需要先进的地震监测来评估总水资源缺口.

科学领域:

地质学
水文学
环境科学

背景情况:

加利福尼亚州在2023年初经历了一场历史性的干旱,被大气河流风暴缓解.
这些风暴后的地下水回收程度尚不清楚.
了解每十年地下水变化对于水资源管理至关重要.

研究的目的:

在洛杉矶大区的地下水储存中经过二十年的空间变化.
区分地表水和地下水的干旱恢复模式.
评估最近降雨对深层水库的有效性.

主要方法:

使用地震环境干扰测量来追踪地下水的变化.
分析了地下水位的二十年数据.
导出地震水图以可视化储水动态.

主要成果:

在2023年雨季,地表和近地表水储量显著恢复.
自2006年以来,只有大约25%的地下水被恢复.
在50米以下的含水层中观察到大量的十年耗尽,恢复有限.

结论:

最近的暴风雨还没有完全恢复地下水资源,
地震探测提供了一个高分辨率的工具来监测深层地下水的缺陷.
持续监测深层水层对于全面了解水资源的情况至关重要.

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