An analysis of the performances of low frequency cylinder glass tags for the underwater tracking of pebbles on a natural beach

In this paper we provide the results of a two months experimentation of Low Frequency RFID technology for the sediments tracking on a beach close to Ancona, Italy. For this experimentation, cylinder glass tags were used, modifying a previous solution based on the use of plastic disc tags. While the use of Low Frequency RFID as a technology to monitor the movements of sediments under and outside water on beaches subject to high coastal erosion phenomenons was already been tested before and described in previous papers, the use of glass tags was not introduced until this last experimentation due to the fragile nature of these devices that discouraged from their use. Anyway, their use was finally encouraged from the goods results obtained from laboratory test concerning their reading range and their ease of use. The results provided in this paper show that cylinder glass tags are probably the best solution for the tracking of pebbles movements.