Imaging a soil fragipan using a high-frequency multi-channel analysis of surface wave method

摘要: Abstract The objective of this study was to noninvasively image fragipan layers using a high-frequency multi-channel analysis surface wave (HF-MASW) method. HF-MASW method is developed measure the soil profile in terms shear velocity at depths up few meters vadose zone. present MASW uses an accelerometer as vibration sensor detect Rayleigh propagation generated by electrodynamic shaker operating frequency-sweeping mode three overlapped frequency bands. With method, subsurface obtained, i.e., properties vertical cross-section test site were measured, visualized, and evaluated. From contrast image, presence, depth, extent identified. result compared with field observations pit face 2-dimensional obtained penetration tests. They good agreement. demonstrated capability technique for detection imaging hard such fragipan.