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Initial evaluation of the use of RFID sensors for monitoring the geomorphological dynamics of a boulder beach. (Oia, Galicia)
Abstract and Figures
Recent technological advances have made it possible to improve the accuracy of coastal studies through devices such as RFID (Radio Frequency IDentification). These sensors allow the monitoring of elements of the environment at any time since its placement and offer a great level of detail. This research is developed in a boulder beach in Oia (Pontevedra), where 80 RFID sensors were installed in the natural boulders, without changing their position. The sensors were placed in lines of 5 elements perpendicular to the coastline. After the first winter, there is a general movement of the boulders. Of the 48 recovered, 81% have displaced more than 50 cm, minimum value to consider that there was movement. The greater displacements have occurred in boulders whose axes didn’t exceed 100 cm, with a maximum distance of 20,47 meters. As for the areas of greater mobility, it is clearly perceived that the central sector of the study area present greater variations in the position of the boulders, while the north and the lower part of the beach, where it is located coastal platform, are the most stable areas.
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