Agrogeophysical methods for identifying soil pipes

The direct contribution of internal soil piping to losses or their collapse form ephemeral gullies is a vital component in understanding total loss from agricultural lands. generation and evolution pipes occur below the surface, where survey-based measurements analysis often fail provide comprehensive image these crucial phenomena erosional evolution. distribution pipe collapses does not always correlate with surface flow paths, as indicated by topography. This lack correlation makes inferences traditional remote sensing manual surveying features subject significant uncertainty correspondence actual subsurface path. Non-invasive geophysical methods better alternative for high spatial resolution imaging delineate, characterize, map networks. In addition being non-invasive, are more expedient lower cost than invasive techniques. this paper, feasibility efficiency two methods, ground penetrating radar (GPR) electromagnetic induction (EMI), delineating cross-sectional plan view maps presented. evaluations based on field at research site established gullies. Geophysical signatures evaluated using composite (combined) cross-section plot that includes results an technique known cone penetrologger testing (CPL). These then used construct area. EMI allow delineation larger zones fields having GPR data provides much resolution. can be (depth slices) representing different depths. demonstrate potential useful tools studying pipes.