Mass Exchange of Water and Soil on the Soil Surface in the Rainfall Splash Erosion
This research aims to unfold the mass exchange mechanism of water and soil on the soil surface in the rainfall splash erosion process. We regard the rainfall splash erosion process as a collision process between the raindrop and the soil particle on the soil interface. This recognition allows us to...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2021-11-01
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| Series: | Frontiers in Earth Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/feart.2021.739804/full |
| _version_ | 1818407468371279872 |
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| author | Sun Sanxiang Sun Sanxiang Zhang Yunxia Lei Pengshui Lei Pengshui |
| author_facet | Sun Sanxiang Sun Sanxiang Zhang Yunxia Lei Pengshui Lei Pengshui |
| author_sort | Sun Sanxiang |
| collection | DOAJ |
| description | This research aims to unfold the mass exchange mechanism of water and soil on the soil surface in the rainfall splash erosion process. We regard the rainfall splash erosion process as a collision process between the raindrop and the soil particle on the soil interface. This recognition allows us to incorporate research approaches from the spring vibrator model, which has been developed for simulating the impact of liquid drops on solid surface. We further argue that because a same set of factors determine the splash amount and infiltration amount and it is relatively simpler to observe the infiltration amount, an investigation into the relationship between the splash amount and infiltration amount would be able to provide a new channel for quantifying the splash erosion. This recognition leads us to examining the relationship between single raindrop, rainfall kinetic energy and splash erosion from both theoretical and empirical angles, with an emphasis on the relationship between the infiltration amount and the splash erosion. Such an investigation would add value to the collective effort to establish mass exchange law in water-soil interface during rainfall splash erosion. It is found that during the rainfall splash process, the splash erosion is proportional to the rainfall kinetic energy; and has a linear relation to the infiltration amount, with the rainfall intensity as one of important parameters and the slope depending on the unit conversation of the infiltration amount and the splash erosion. If the units of two items are same, the slope is the ratio of the soil and water density, and the splash erosion velocity of the rainfall is half of the rainfall terminal velocity. The single raindrop kinetic energy and the splash erosion have a quadratic parabola relation, and the splash velocity is about 1/3 of single raindrop terminal velocity. |
| first_indexed | 2024-12-14T09:28:19Z |
| format | Article |
| id | doaj.art-278146ee5a1948078067e33e3f72c8cd |
| institution | Directory Open Access Journal |
| issn | 2296-6463 |
| language | English |
| last_indexed | 2024-12-14T09:28:19Z |
| publishDate | 2021-11-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Earth Science |
| spelling | doaj.art-278146ee5a1948078067e33e3f72c8cd2022-12-21T23:08:07ZengFrontiers Media S.A.Frontiers in Earth Science2296-64632021-11-01910.3389/feart.2021.739804739804Mass Exchange of Water and Soil on the Soil Surface in the Rainfall Splash ErosionSun Sanxiang0Sun Sanxiang1Zhang Yunxia2Lei Pengshui3Lei Pengshui4School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou, ChinaEngineering Research Center for Cold and Arid Regions Water Resource Comprehensive Utilization, Ministry of Education, Lanzhou, ChinaSchool of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou, ChinaSchool of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou, ChinaEngineering Research Center for Cold and Arid Regions Water Resource Comprehensive Utilization, Ministry of Education, Lanzhou, ChinaThis research aims to unfold the mass exchange mechanism of water and soil on the soil surface in the rainfall splash erosion process. We regard the rainfall splash erosion process as a collision process between the raindrop and the soil particle on the soil interface. This recognition allows us to incorporate research approaches from the spring vibrator model, which has been developed for simulating the impact of liquid drops on solid surface. We further argue that because a same set of factors determine the splash amount and infiltration amount and it is relatively simpler to observe the infiltration amount, an investigation into the relationship between the splash amount and infiltration amount would be able to provide a new channel for quantifying the splash erosion. This recognition leads us to examining the relationship between single raindrop, rainfall kinetic energy and splash erosion from both theoretical and empirical angles, with an emphasis on the relationship between the infiltration amount and the splash erosion. Such an investigation would add value to the collective effort to establish mass exchange law in water-soil interface during rainfall splash erosion. It is found that during the rainfall splash process, the splash erosion is proportional to the rainfall kinetic energy; and has a linear relation to the infiltration amount, with the rainfall intensity as one of important parameters and the slope depending on the unit conversation of the infiltration amount and the splash erosion. If the units of two items are same, the slope is the ratio of the soil and water density, and the splash erosion velocity of the rainfall is half of the rainfall terminal velocity. The single raindrop kinetic energy and the splash erosion have a quadratic parabola relation, and the splash velocity is about 1/3 of single raindrop terminal velocity.https://www.frontiersin.org/articles/10.3389/feart.2021.739804/fullrainfallsplash erosion amountinfiltration amountmass exchangeequivalent spring damping model |
| spellingShingle | Sun Sanxiang Sun Sanxiang Zhang Yunxia Lei Pengshui Lei Pengshui Mass Exchange of Water and Soil on the Soil Surface in the Rainfall Splash Erosion Frontiers in Earth Science rainfall splash erosion amount infiltration amount mass exchange equivalent spring damping model |
| title | Mass Exchange of Water and Soil on the Soil Surface in the Rainfall Splash Erosion |
| title_full | Mass Exchange of Water and Soil on the Soil Surface in the Rainfall Splash Erosion |
| title_fullStr | Mass Exchange of Water and Soil on the Soil Surface in the Rainfall Splash Erosion |
| title_full_unstemmed | Mass Exchange of Water and Soil on the Soil Surface in the Rainfall Splash Erosion |
| title_short | Mass Exchange of Water and Soil on the Soil Surface in the Rainfall Splash Erosion |
| title_sort | mass exchange of water and soil on the soil surface in the rainfall splash erosion |
| topic | rainfall splash erosion amount infiltration amount mass exchange equivalent spring damping model |
| url | https://www.frontiersin.org/articles/10.3389/feart.2021.739804/full |
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