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MONITORING AND MODELING OF HYDROLOGICAL PROCESSES IN THE SEMIARID REGION OF BRAZIL: THE CARIRI EXPERIMENTAL BASINS
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  • Vajapeyam Srinivasan,
  • Hugo Alcântara,
  • Carlos Galvão,
  • Ulisses Bezerra,
  • John Cunha
Vajapeyam Srinivasan
Universidade Federal de Campina Grande
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Hugo Alcântara
Universidade Federal de Campina Grande
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Carlos Galvão
Universidade Federal de Campina Grande
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Ulisses Bezerra
Universidade Federal de Campina Grande
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John Cunha
Universidade Federal de Campina Grande
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Abstract

Two experimental basins – the Cariri basins – were installed in a typically semiarid region in the State of Paraíba, Brazil, for obtaining reliable estimates of runoff and soil erosion in different scales to evaluate the influence of the human activities and other factors over the processes of runoff and erosion. In the first basin, located in the municipality of Sumé, the field studies were carried out at three different scales: four micro-basins with an area of around 0.5 ha; nine standard Wischmeier-type erosion plots of 100 m2 and seven sample plots of 1 m2. The experimental units had varied vegetal cover and management and, except the sample plots, were subjected to natural rainfall events only, and were monitored from 1982 to 1991. The total runoff and total sediment yield were determined for each of the events of precipitation. The installations of the second basin, in the near municipality of São João do Cariri, were planned for the continuation of the studies initiated at Sumé, and include erosion plots (100 m2), micro-basins, and sub-basins, which are being monitored for runoff and sediment production up to now. Among them, two nested micro-basins were monitored to detect any scale effect at the micro-basin level. Nearly 600 events of natural precipitation, that produced runoff in at least one of the experimental units, have been registered. This bulk of data was utilised to evaluate the influence of various factors, including cultivation practices. The data collected so far has been successfully used to calibrate hydrological models for plots and micro-basins. Parameters have been tested by means of cross validations among micro-basins and sub-basins. The data sets, in part, have been made available to researchers in Brazil and now the updated data files are being made available to all the researchers in hydro-sedimentology at: https://doi.org/10.5281/zenodo.4044690

Peer review status:ACCEPTED

30 Sep 2020Submitted to Hydrological Processes
03 Oct 2020Submission Checks Completed
03 Oct 2020Assigned to Editor
03 Oct 2020Reviewer(s) Assigned
06 Jan 2021Review(s) Completed, Editorial Evaluation Pending
15 Jan 2021Editorial Decision: Revise Major
16 Mar 20211st Revision Received
17 Mar 2021Assigned to Editor
17 Mar 2021Submission Checks Completed
17 Mar 2021Reviewer(s) Assigned
17 Mar 2021Review(s) Completed, Editorial Evaluation Pending
27 Mar 2021Editorial Decision: Revise Minor
16 Apr 20212nd Revision Received
16 Apr 2021Submission Checks Completed
16 Apr 2021Assigned to Editor
16 Apr 2021Reviewer(s) Assigned
16 Apr 2021Review(s) Completed, Editorial Evaluation Pending
21 Apr 2021Editorial Decision: Accept