Soil water content estimation at peat soil using GPR common-offset measurements

9th IGRSM International Conference and Exhibition on Geospatial & Remote Sensing

地球科学;计算机科学

Abd Karim, Nurul Izzati^1 ; Kamaruddin, Samira Albati^1 ; Hasan, Rozaimi Che^1

Department of Engineering, Razak School of UTM in Engineering and Advancd Technology, Universiti Teknologi Malaysia, Kuala Lumpur, Malaysia^1

关键词: Accuracy assessment;    Dielectric permittivities;    Empirical equations;    Gravimetric measurements;    Ground Penetrating Radar;    Ground penetrating radar (GPR);    Petrophysical relationship;    Survey measurement;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/169/1/012072/pdf
DOI  :  10.1088/1755-1315/169/1/012072

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

The appropriate of petrophysical relationship is needed for Soil Water Content (SWC) estimation especially when using Ground Penetrating Radar (GPR). Ground penetrating radar is a geophysical tool that provides indirectly the parameter of SWC. This paper examines the performance of few published petrophysical relationships to obtain SWC estimates from in-situ GPR common-offset survey measurements with gravimetric measurements at peat soil area. Gravimetric measurements were conducted to support of GPR measurements for the accuracy assessment. Further, GPR with dual frequencies (250MHhz and 700MHz) were used in the survey measurements to obtain the dielectric permittivity. Three empirical equations (i.e. Roth's equation, Schaap's equation and Idi's equation) were selected for the study, used to compute the soil water content from dielectric permittivity of the GPR profile. The results indicate that Schaap's equation provides strong correlation with SWC as measured by GPR data sets and gravimetric measurements.