| 武汉台形变观测与降雨参数之间的定量分析与研究 |
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| 引用本文： | 吕琳,杨艳芳,舒德亮.武汉台形变观测与降雨参数之间的定量分析与研究[J].西北地震学报,2020,42(1):136-142. |
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| 作者姓名： | 吕琳 杨艳芳 舒德亮 |
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| 作者单位： | 中国地震局地震研究所(地震与大地测量重点实验室), 湖北 武汉 430071;湖北省地震局, 湖北 武汉 430071,中国地震局地震研究所(地震与大地测量重点实验室), 湖北 武汉 430071;湖北省地震局, 湖北 武汉 430071,中国地震局地震研究所(地震与大地测量重点实验室), 湖北 武汉 430071;湖北省地震局, 湖北 武汉 430071 |
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| 基金项目： | 中国地震局专项“全国地球物理台网数据跟踪分析与产出”;中国地震局地震研究所所长基金课题（IS201726168）;中国地震局地震监测、预测、科研三结合课题（CEA-JC/3JH）;湖北省地震局基础科研基金项目（IS2020） |
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| 摘 要： | 基于“前兆台网(站)观测数据跟踪分析平台”,对武汉台形变观测资料进行了系统分析,提取出观测曲线受降雨干扰影响的事件,采用降雨总量、初始驱动降雨量和瞬时降雨量最大值等降雨参数对降雨干扰事件进行统计分析。结果表明:降雨总量达40 mm、初始驱动降雨量为0.3 mm或瞬时降雨量最大值达0.6 mm时,DSQ型水管倾斜仪易受降雨干扰;SSY型铟瓦棒伸缩仪当降雨总量超60 mm或瞬时降雨量最大值大于0.5 mm时易受降雨干扰;VS型垂直摆倾斜仪受降雨干扰与降雨总量、初始驱动降雨量和瞬时降雨量最大值无显著相关关系;降雨总量对形变仪器观测物理量的影响基本呈现线性;而形变仪器观测物理量与初始驱动降雨量、瞬时降雨量最大值无显著相关关系。认为武汉台形变观测受降雨影响主要来自降雨渗透影响和周边水体荷载变化影响两个方面。
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| 关 键 词： | 观测数据跟踪分析 定量分析 降雨总量 初始驱动降雨量 瞬时降雨量最大值 |
| 收稿时间： | 2020/2/1 0:00:00 |
Quantitative Analysis and Mechanism of the Relation betweenDeformation Observation and Rainfall ParametersBased on Data from Wuhan Station |
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| LV Lin,YANG Yanfang,SHU Deliang.Quantitative Analysis and Mechanism of the Relation betweenDeformation Observation and Rainfall ParametersBased on Data from Wuhan Station[J].Northwestern Seismological Journal,2020,42(1):136-142. |
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| Authors: | LV Lin YANG Yanfang SHU Deliang |
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| Institution: | Key Laboratory of Earthquake Geodesy, Institute of Seismology, CEA, Wuhan 430071, Hubei, China;Hubei Earthquake Agency, Wuhan 430071, Hubei, China,Key Laboratory of Earthquake Geodesy, Institute of Seismology, CEA, Wuhan 430071, Hubei, China;Hubei Earthquake Agency, Wuhan 430071, Hubei, China and Key Laboratory of Earthquake Geodesy, Institute of Seismology, CEA, Wuhan 430071, Hubei, China;Hubei Earthquake Agency, Wuhan 430071, Hubei, China |
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| Abstract: | The deformation observation data at Wuhan station were systematically analyzed on the basis of the "Analysis Platform of the Precursor Network (Station) Observation Data Tracking." Three sets of digital deformation observation instruments, namely, the DSQ water tube tiltmeter (NS component, EW component), SSY indium rod extensometer (NS component, EW component), and VS vertical pendulum tiltmeter (NS component, EW component), were installed at Wuhan station. All three sets of instruments operated stably, and the recorded data were continuous and reliable. The observation curves of the events affected by rainfall disturbance were extracted. Moreover, the influential rainfall events were analyzed in terms of rainfall parameters, including the amount of rainfall, initial driving rainfall, and maximum value of instantaneous rainfall. Results showed that the DSQ water tube tiltmeter was subjected to rainfall disturbance when the total rainfall amount was 40 mm, the initial driving rainfall reached 0.3 mm, or the maximum value of instantaneous rainfall was 0.6 mm. The SSY indium rod extensometer was susceptible to rainfall when the total rainfall amount was 60 mm or the maximum value of instantaneous rainfall was more than 0.5 mm; no significant correlation was observed between the rainfall interference of the VS vertical pendulum tiltmeter and the rainfall parameters. The influence of rainfall amount on the observed physical quantities of the instruments was linear. However, no significant correlation was noted between the observed physical quantities of the instruments and the initial driving rainfall and maximum value of instantaneous rainfall. The influence of rainfall on the deformation observation at Wuhan station was attributed to rainfall infiltration and surrounding water load changes. |
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| Keywords: | observation data tracking quantitative analysis amount of rainfall initial driving rainfall maximum value of instantaneous rainfall |
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