System for monitoring level variations in a soil subjected to erosive and sedimentary agents, and monitoring method and element

摘要

A system for monitoring level variations of at least one bottom region (20) of a soil subjected to erosive and sedimentary agents, which comprises at least one monitoring element (15) fastened to the bottom, the at least one monitoring element (15) comprises a sensor apparatus (120) for detecting a response (|u _x|) of the at least one monitoring element (15) with respect to a stress (f_s). The stress (f_s) is a stress able to determine vibrations originating displacements (|u_x|) of at least part of the at least one monitoring element, the response is a function of the displacements (|u_x|) of at least part of the at least one monitoring element (15) and apparatus (150) are provided for analyzing the response with respect to a stress (f_s), identifying characteristic frequencies (λ_i*) and correlate the characteristic frequencies (λ_i*) with a lowering (Δl_p) of the bottom region (20).