In this study, laboratory and GPR water content measurements on two sandy soils are compared. A robust procedure to constrain GPR surveys is provided, aiming to obtain accurate and reliable soil moisture information at the field scale. The application of the well-known Topp’s equation, provided good results only for water contents (θ_v) from 5 to 17%. Therefore, integrated analyses are mandatory to better understand the subsurface structures and the water content pattern in unsaturated zones. Data and results here presented represent the first reference for typical sandy soils outcropping in Central Italy, providing solid constraints for engineering and hydrogeological applications.

在这项研究中，比较了两种沙质土壤的实验室测量值和GPR含水率测量值。提供了一种强大的程序来约束GPR调查，旨在在田间尺度上获得准确而可靠的土壤水分信息。众所周知的Topp方程的应用仅对5％至17％的水含量（_θv）提供了良好的结果。因此，必须进行综合分析以更好地了解非饱和带的地下结构和含水量模式。此处提供的数据和结果代表了意大利中部典型沙质土壤露头的第一参考，为工程和水文地质应用提供了坚实的约束。