探地雷达测量土壤含水量的应用研究

发布时间：2018-04-25 20:49

本文选题：探地雷达 + 土壤含水量　；参考：《地球物理学进展》2017年05期

【摘要】：快速、准确地获得土壤含水量信息对农业、水文地质、工程地质和环境科学都具有十分重要的意义.作为中尺度的非侵入型的探测土壤含水量的方法,探地雷达方法受到越来越多的重视,具有广阔的应用前景.本文基于速度分析原理和混合介质介电模型,建立了一套计算土壤含水量的探地雷达数据处理和分析流程.利用提出的数据处理和分析流程对多层水平介质模型的正演模拟数据进行了处理和分析,获得的结果说明了应用此套流程对探地雷达共中心点(CMP)数据估计土壤含水量是适用可行的.然后应用此流程对蒙古国乌兰巴托市水源区域采集的CMP数据进行了处理和分析,并与观测井的信息进行对比,获得了该区域准确的地下水位和土壤含水量信息.正演模拟数据和实测数据处理分析结果验证了探地雷达方法测量土壤含水量的有效性和可靠性.
[Abstract]:It is very important for agriculture, hydrogeology, engineering geology and environmental science to obtain soil moisture information quickly and accurately. As a mesoscale non-invasive method for detecting soil water content, ground penetrating radar (GPR) method has attracted more and more attention and has broad application prospects. Based on the principle of velocity analysis and dielectric model of mixed medium, a set of GPR data processing and analysis flow is established for calculating soil moisture content. The forward modeling data of multi-layer horizontal medium model are processed and analyzed by using the proposed data processing and analysis flow. The results show that it is feasible to estimate soil water content by using this process for GPR CMP data. Then, the CMP data collected from the water source area of Ulaanbaatar, Mongolia are processed and analyzed, and compared with the information of the observation well, the accurate information of groundwater level and soil moisture in this area is obtained. The validity and reliability of the GPR method for soil moisture measurement are verified by the processing and analysis of forward modeling data and measured data.
【作者单位】：吉林大学地球探测科学与技术学院;地球信息探测仪器教育部重点实验室(吉林大学);
【基金】：国家自然科学基金项目(41574109,41340039) 国家重点研发专项课题(2016YFC0600505)联合资助
【分类号】：P631.3;S152.7

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