Water Wells as Possible Indicators of Tectonic Strain
Water Wells as Possible Indicators of Tectonic Strain
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DOI：
10.1126/science.189.4202.553
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发表时间：
1975-08
期刊：
影响因子：
56.9
通讯作者：
H. Wakita
中科院分区：
文献类型：
--
作者：
H. Wakita
在日本东海和关东地区的95口观测井中，有59口记录了与1974年5月9日伊豆-半户-木地震相关的同震水位变化。地下水位上升或下降的井的空间分布具有一定的系统性。这些井所在的区域与断裂预期的收缩和扩张区域非常吻合。这有力地表明，观测到的地下水位变化与构造应变之间可能存在关联。结果表明，井的水位至少可以监测急性同震应变变化。
Coseismic water level changes associated with the Izu-Hanto-oki earthquake of 9 May 1974 were recorded in 59 among 95 observation wells located in the districts of Tokai and Kanto, Japan. The spatial distribution of wells in which the groundwater level rose or fell is rather systematic. The areas in which these wells are located closely coincide with the areas of contraction and dilatation expected by the faulting. This strongly suggests a possible correlation between the observed changes in groundwater level and the tectonic strain. The results may indicate that the water level of wells is able to monitor at least acute coseismic strain changes.