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• W4252912187 abstract "<strong class=journal-contentHeaderColor>Abstract.</strong> Despite the importance of temporary streams for the provision of key ecosystem services, their experimental monitoring remains challenging because of the practical difficulties in performing accurate high-frequency surveys of the flowing portion of river networks. In this study, about 30 electrical resistance (ER) sensors were deployed in a high relief 2.6 km<span class=inline-formula>²</span> catchment of the Italian Alps to monitor the spatio-temporal dynamics of the active river network during 2 months in the late fall of 2019. The setup of the ER sensors was customized to make them more flexible for the deployment in the field and more accurate under low flow conditions. Available ER data were compared to field-based estimates of the nodes' persistency (i.e., a proxy for the probability to observe water flowing over a given node) and then used to generate a sequence of maps representing the active reaches of the stream network with a sub-daily temporal resolution. This allowed a proper estimate of the joint variations of active river network length (<span class=inline-formula><i>L</i></span>) and catchment discharge (<span class=inline-formula><i>Q</i></span>) during the entire study period. Our analysis revealed a high cross-correlation between the statistics of individual ER signals and the flow persistencies of the cross-sections where the sensors were placed. The observed spatial and temporal dynamics of the actively flowing channels also highlighted the diversity of the hydrological behavior of distinct zones of the study catchment, which was attributed to the heterogeneity in catchment geology and stream-bed composition. Our work emphasizes the potential of ER sensors for analyzing spatio-temporal dynamics of active channels in temporary streams, discussing the major limitations of this type of technology emerging from the specific application presented herein." @default.
• W4252912187 created "2022-05-12" @default.
• W4252912187 creator A5068241511 @default.
• W4252912187 date "2021-06-21" @default.
• W4252912187 modified "2023-10-14" @default.
• W4252912187 title "Reply on RC2" @default.
• W4252912187 doi "https://doi.org/10.5194/hess-2021-103-ac2" @default.
• W4252912187 hasPublicationYear "2021" @default.
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