Comprehensive relationships between kinetic energy and rainfall intensity based on precipitation measurements from an OTT Parsivel2 optical disdrometer
When raindrops collide with the topsoil surface, they cause soil detachment, which can be estimated by measuring the kinetic energy (KE) of the raindrops. Considering their direct measurements on terrestrial surfaces are challenging, empirical equations are commonly utilized for estimating the KE fr...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2022-11-01
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| Series: | Frontiers in Environmental Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fenvs.2022.985516/full |
| _version_ | 1798046370659041280 |
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| author | Linh Nguyen Van Xuan-Hien Le Xuan-Hien Le Giang V. Nguyen Minho Yeon Do Thi Tuyet May Giha Lee |
| author_facet | Linh Nguyen Van Xuan-Hien Le Xuan-Hien Le Giang V. Nguyen Minho Yeon Do Thi Tuyet May Giha Lee |
| author_sort | Linh Nguyen Van |
| collection | DOAJ |
| description | When raindrops collide with the topsoil surface, they cause soil detachment, which can be estimated by measuring the kinetic energy (KE) of the raindrops. Considering their direct measurements on terrestrial surfaces are challenging, empirical equations are commonly utilized for estimating the KE from rainfall intensity (Ir), which has a great influence on soil loss and can be easily obtained. However, establishing the optimal relationship between KE and Ir is difficult. In this study, we used a laser-based instrument (OTT Parsivel2 Optical disdrometer) to collect datasets in Sangju City (South Korea) between June 2020 and December 2021 to examine the characteristics of KE–Ir relationships. We derived two different expressions for KE–Ir: KE expenditure (KEexp; J m−2h−1) and KE content (KEcon; J m−2mm−1), using 37 rainfall events. Subsequently, the 37 rainfall events were categorized into three groups based on the magnitude of the mean rainfall intensity of each event. Overall, the KE values estimated through the equations derived based on 37 events were higher than those estimated by the equations derived based on the three rainfall event groups. Our findings should facilitate the development of more suitable physics-based soil erosion models at event scales. |
| first_indexed | 2024-04-11T23:36:36Z |
| format | Article |
| id | doaj.art-411af21b1a6546c6b410d41df729e043 |
| institution | Directory Open Access Journal |
| issn | 2296-665X |
| language | English |
| last_indexed | 2024-04-11T23:36:36Z |
| publishDate | 2022-11-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Environmental Science |
| spelling | doaj.art-411af21b1a6546c6b410d41df729e0432022-12-22T03:56:55ZengFrontiers Media S.A.Frontiers in Environmental Science2296-665X2022-11-011010.3389/fenvs.2022.985516985516Comprehensive relationships between kinetic energy and rainfall intensity based on precipitation measurements from an OTT Parsivel2 optical disdrometerLinh Nguyen Van0Xuan-Hien Le1Xuan-Hien Le2Giang V. Nguyen3Minho Yeon4Do Thi Tuyet May5Giha Lee6Department of Advanced Science and Technology Convergence, Kyungpook National University, Sangju-si, South KoreaDisaster Prevention Emergency Management Institute, Kyungpook National University, Sangju-si, South KoreaFaculty of Water Resources Engineering, Thuyloi University, Hanoi, VietnamDepartment of Advanced Science and Technology Convergence, Kyungpook National University, Sangju-si, South KoreaDepartment of Advanced Science and Technology Convergence, Kyungpook National University, Sangju-si, South KoreaDepartment of Advanced Science and Technology Convergence, Kyungpook National University, Sangju-si, South KoreaDepartment of Advanced Science and Technology Convergence, Kyungpook National University, Sangju-si, South KoreaWhen raindrops collide with the topsoil surface, they cause soil detachment, which can be estimated by measuring the kinetic energy (KE) of the raindrops. Considering their direct measurements on terrestrial surfaces are challenging, empirical equations are commonly utilized for estimating the KE from rainfall intensity (Ir), which has a great influence on soil loss and can be easily obtained. However, establishing the optimal relationship between KE and Ir is difficult. In this study, we used a laser-based instrument (OTT Parsivel2 Optical disdrometer) to collect datasets in Sangju City (South Korea) between June 2020 and December 2021 to examine the characteristics of KE–Ir relationships. We derived two different expressions for KE–Ir: KE expenditure (KEexp; J m−2h−1) and KE content (KEcon; J m−2mm−1), using 37 rainfall events. Subsequently, the 37 rainfall events were categorized into three groups based on the magnitude of the mean rainfall intensity of each event. Overall, the KE values estimated through the equations derived based on 37 events were higher than those estimated by the equations derived based on the three rainfall event groups. Our findings should facilitate the development of more suitable physics-based soil erosion models at event scales.https://www.frontiersin.org/articles/10.3389/fenvs.2022.985516/fulldisdrometerrainfall kinetic energyrainfall intensitySouth KoreaSangju |
| spellingShingle | Linh Nguyen Van Xuan-Hien Le Xuan-Hien Le Giang V. Nguyen Minho Yeon Do Thi Tuyet May Giha Lee Comprehensive relationships between kinetic energy and rainfall intensity based on precipitation measurements from an OTT Parsivel2 optical disdrometer Frontiers in Environmental Science disdrometer rainfall kinetic energy rainfall intensity South Korea Sangju |
| title | Comprehensive relationships between kinetic energy and rainfall intensity based on precipitation measurements from an OTT Parsivel2 optical disdrometer |
| title_full | Comprehensive relationships between kinetic energy and rainfall intensity based on precipitation measurements from an OTT Parsivel2 optical disdrometer |
| title_fullStr | Comprehensive relationships between kinetic energy and rainfall intensity based on precipitation measurements from an OTT Parsivel2 optical disdrometer |
| title_full_unstemmed | Comprehensive relationships between kinetic energy and rainfall intensity based on precipitation measurements from an OTT Parsivel2 optical disdrometer |
| title_short | Comprehensive relationships between kinetic energy and rainfall intensity based on precipitation measurements from an OTT Parsivel2 optical disdrometer |
| title_sort | comprehensive relationships between kinetic energy and rainfall intensity based on precipitation measurements from an ott parsivel2 optical disdrometer |
| topic | disdrometer rainfall kinetic energy rainfall intensity South Korea Sangju |
| url | https://www.frontiersin.org/articles/10.3389/fenvs.2022.985516/full |
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