Lava domes created by volcanoes often cause pyroclastic and debris flows, which have a significant impact on the surrounding infrastructure and population and have been the subject of much research. However, because volcanic domes tend not to survive the eruptions that form them, the instability of domes that survive eruptions such as Unzen Fugendake in Japan is both a poorly understood process and a danger. Therefore, the present contribution aims to (1) Displacement and precipitation from 2018 to 2020 for lava domes at Unzen volcano and their relationship to earthquakes, and (2) Haar wavelet analysis to understand the response of displacement to precipitation. The method is based on dome displacement from the Unzen Ground Based Synthetic Aperture Radar system and 48-hour rainfall from the MP radar rain gauge system. As a result, the authors confirmed the following: (1) precipitation of 150 mm or more in 48 hours tends to increase the vertical fluctuation of the dome, and even rainfall of less than 100 mm per 48 hours has a similar effect when it is repeated in an intensive manner; (2) After precipitation, major dome displacement can take days or weeks to occur, and is not instantaneous like the dome collapses in Soufriere and Merapi.

中文翻译：

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云仙风玄岳火山穹顶降雨引起的重力运动结合地面雷达干涉测量和 XRAIN 降雨雷达系统分析

火山形成的熔岩穹丘经常引起火山碎屑和泥石流，对周围的基础设施和人口产生重大影响，并已成为许多研究的主题。然而，由于火山圆顶往往无法在形成它们的喷发中幸存下来，因此在日本云仙普玄岳等喷发中幸存下来的火山圆顶的不稳定性既是一个人们知之甚少的过程，也是一个危险。因此，本贡献的目的是（1）云仙火山熔岩穹顶2018年至2020年的位移和降水及其与地震的关系，以及（2）哈尔小波分析以了解位移对降水的响应。该方法基于 Unzen 地基合成孔径雷达系统的穹顶位移和 MP 雷达雨量计系统的 48 小时降雨量。结果，作者证实了以下几点：（1）48小时内降水量达到150毫米或以上，往往会增加穹顶的垂直波动，即使每48小时降水量小于100毫米，也有类似的影响。密集地重复； (2) 降水后，主要的穹顶位移可能需要数天或数周的时间才能发生，并且不会像苏弗里耶尔和默拉皮的穹顶倒塌那样瞬间发生。