Monitoring Infiltration Process Seamlessly Using Array Ground Penetrating Radar
Monitoring Infiltration Process Seamlessly Using Array Ground Penetrating Radar
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DOI：
10.2134/ael2016.01.0002
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发表时间：
2016-12-01
影响因子：
2.6
通讯作者：
Inoue, Mitsuhiro
中科院分区：
文献类型：
--
作者：
Iwasaki, Toshiki;Kuroda, Seiichiro;Inoue, Mitsuhiro
由于阵列探地雷达（GPR）在毫秒内顺序地电切换任何天线组合，因此可以几乎无缝地获取共偏移距道集（COG）和多偏移距道集（MOG）数据。因此，本研究的主要目的是确定COG和MOG调查阵列GPR，它允许110个不同的天线组合，可以检测到在垂直场渗透的湿润锋。在日本鸟取沙丘内的试验田中进行了入渗试验。阵列探地雷达的COG和MOG时移雷达图清晰地显示了湿润锋随时间的演化。MOG雷达图中的反射信号与用土壤湿度传感器独立观察的介电常数预测的双向旅行时间吻合得很好。这项研究证实了阵列探地雷达监测和量化的渗透过程中的领域的有用性。
Because an array ground penetrating radar (GPR) electrically switches any antenna combinations sequentially in milliseconds, both common-offset gather (COG) and multi-offset gather (MOG) data can be acquired almost seamlessly. The main objective of this study was therefore to determine if COG and MOG surveys by array GPR, which allows 110 different antenna combinations, could detect a wetting front during vertical field infiltration. An infiltration experiment was conducted in an experimental field inside Tottori Sand Dune, Japan. Time-lapse radargrams of COG and MOG by array GPR clearly show the wetting front evolution with time. Reflection signals in MOG radargrams agree well with two-way travel times predicted from dielectric constant observed independently with a soil moisture sensor. This study confirms the usefulness of array GPR for monitoring and quantifying the infiltration process in the field.