Erosive rainfall in the Rio do Peixe Valley: Part III - Risk of extreme events
ABSTRACT Understanding the risks of extreme events related to soil erosion is important for adequate dimensioning of erosion and runoff control structures. The objective of this study was to determine the rainfall erosivity with different return periods for the Valley of the Rio do Peixe in Santa Ca...
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Universidade Federal de Campina Grande
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| Series: | Revista Brasileira de Engenharia Agrícola e Ambiental |
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| author | Álvaro J. Back Augusto C. Pola Nilzo I. Ladwig Hugo Schwalm |
| author_facet | Álvaro J. Back Augusto C. Pola Nilzo I. Ladwig Hugo Schwalm |
| author_sort | Álvaro J. Back |
| collection | DOAJ |
| description | ABSTRACT Understanding the risks of extreme events related to soil erosion is important for adequate dimensioning of erosion and runoff control structures. The objective of this study was to determine the rainfall erosivity with different return periods for the Valley of the Rio do Peixe in Santa Catarina state, Brazil. Daily pluviographic data series from 1984 to 2014 from the Campos Novos, and Videira meteorological stations and from 1986 to 2014 from the Caçador station were used. The data series of maximum annual rainfall intensity in 30 min, maximum annual erosive rainfall, and total annual erosivity were analyzed for each station. The Gumbel-Chow distributions were adjusted and their adhesions were evaluated by the Kolmogorov-Smirnov test at a significance level of 5%. The Gumbel-Chow distribution was adequate for the estimation of all studied variables. The mean annual erosivity corresponds to the return period of 2.25 years. The data series of the annual maximum individual rainfall erosivity coefficients varied from 47 to 50%. |
| format | Article |
| id | doaj-art-26dec4f0dafb4788adb0760f5371a8a1 |
| institution | DOAJ |
| issn | 1807-1929 |
| language | English |
| publisher | Universidade Federal de Campina Grande |
| record_format | Article |
| series | Revista Brasileira de Engenharia Agrícola e Ambiental |
| spelling | doaj-art-26dec4f0dafb4788adb0760f5371a8a12025-08-20T03:17:57ZengUniversidade Federal de Campina GrandeRevista Brasileira de Engenharia Agrícola e Ambiental1807-1929221636810.1590/1807-1929/agriambi.v22n1p63-68S1415-43662018000100063Erosive rainfall in the Rio do Peixe Valley: Part III - Risk of extreme eventsÁlvaro J. BackAugusto C. PolaNilzo I. LadwigHugo SchwalmABSTRACT Understanding the risks of extreme events related to soil erosion is important for adequate dimensioning of erosion and runoff control structures. The objective of this study was to determine the rainfall erosivity with different return periods for the Valley of the Rio do Peixe in Santa Catarina state, Brazil. Daily pluviographic data series from 1984 to 2014 from the Campos Novos, and Videira meteorological stations and from 1986 to 2014 from the Caçador station were used. The data series of maximum annual rainfall intensity in 30 min, maximum annual erosive rainfall, and total annual erosivity were analyzed for each station. The Gumbel-Chow distributions were adjusted and their adhesions were evaluated by the Kolmogorov-Smirnov test at a significance level of 5%. The Gumbel-Chow distribution was adequate for the estimation of all studied variables. The mean annual erosivity corresponds to the return period of 2.25 years. The data series of the annual maximum individual rainfall erosivity coefficients varied from 47 to 50%.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018000100063&lng=en&tlng=ensoil conservationwater erosionprecipitationprobability |
| spellingShingle | Álvaro J. Back Augusto C. Pola Nilzo I. Ladwig Hugo Schwalm Erosive rainfall in the Rio do Peixe Valley: Part III - Risk of extreme events Revista Brasileira de Engenharia Agrícola e Ambiental soil conservation water erosion precipitation probability |
| title | Erosive rainfall in the Rio do Peixe Valley: Part III - Risk of extreme events |
| title_full | Erosive rainfall in the Rio do Peixe Valley: Part III - Risk of extreme events |
| title_fullStr | Erosive rainfall in the Rio do Peixe Valley: Part III - Risk of extreme events |
| title_full_unstemmed | Erosive rainfall in the Rio do Peixe Valley: Part III - Risk of extreme events |
| title_short | Erosive rainfall in the Rio do Peixe Valley: Part III - Risk of extreme events |
| title_sort | erosive rainfall in the rio do peixe valley part iii risk of extreme events |
| topic | soil conservation water erosion precipitation probability |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018000100063&lng=en&tlng=en |
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