Author(s): Daniele Oss Cazzador; Riccardo Rainato; Lorenzo Picco; Luca Mao

Linked Author(s):

Keywords: Bedload transport; RFID tracers; High gradient streams; Andean stream

Abstract: Tracers have been used to monitor bedload transport in the Estero Morales, a glacierized basin in the Chilean Andes. Dynamics and morphology of river systems are deeply influenced by bedload transport. However, bedload transport dynamics in mountain environments is not fully understood, especially in the case of high gradient streams, mainly because bedload surveys are notoriously difficult to take. Also, empirical equations for predicting transport capacity are still performing poorly in limited-sediment supply conditions. A promising alternative for monitoring bedload is the use of tracers based on radio frequency identification. This technique was successfully applied in different environments and different hydraulic conditions and appears particularly suitable in mountain channels. The aim of the work is the evaluation of bedload transport and the definition of a virtual velocity for clasts displacement. Here we present preliminary results collected by the application of passive RFID tracers in a steep Andean stream, recently affected by severe high floods and subject to progressive melting of summit glacier due to climate change.

DOI: https://doi.org/10.3850/978-981-11-2731-1_329-cd

Year: 2018