Comparative analysis of splash erosion devices for rainfall simulation experiments: A laboratory study

María Fernández-Raga, Julián Campo, Jesús Rodrigo-Comino, Saskia D. Keesstra

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

For the study of soil erosion it is important to set up the experiments well. In the experimental design one of the key factors is the choice of the measurement device. This is especially important when one part of the erosion process needs to be isolated, such as for splash erosion. Therefore, the main aim of this research is to list the general characteristics of the commonly used splash erosion devices and to discuss the performance, to be able to relate them, and make suggestions regarding their use. The devices we selected for this comparative comparison were: the splash cup, funnel, Morgan tray, Tübingen cup, tower, and the gutter. The devices were tested under the same conditions (rainfall characteristics, slope, and soil type) to assess their hydrological response under different intensities of simulated rainfall. All devices were installed on a sloping plot (10°) with sandy soil, and were exposed to 10 min. of simulated rain with intensities ranging from 60 to 172 mm/h to measure the splashed sediment, and to describe problems and differences among them. The results showed that the Tübingen cup was the best performing device to measure kinetic energy of the rain, but, because of its design, it is not possible to measure the detached splashed sediment under natural (field) conditions. On the other hand, the funnel device showed a significant relation with rain intensity because it loses little sediment to washing. In addition, the device is easy to use and cheap. Therefore, this device is highly recommended to estimated splash erosion. to the good performance measuring the actual splash erosion, because it loses little sediment by washing. The device is also cheap and easy to install and manage.

LanguageEnglish
Article number1228
JournalWater (Switzerland)
Volume11
Issue number6
DOIs
Publication statusPublished - 1 Jun 2019

Fingerprint

splash erosion
rainfall simulation
Rain
erosion
Erosion
Equipment and Supplies
sediments
rainfall
simulation
experiment
Sediments
washing
Experiments
sediment
rainfall energy
rain
Soils
Washing
rain intensity
trays

Keywords

  • Environmental assessment
  • Rainfall simulation
  • Soil erosion
  • Splash erosion

Cite this

Fernández-Raga, María ; Campo, Julián ; Rodrigo-Comino, Jesús ; Keesstra, Saskia D. / Comparative analysis of splash erosion devices for rainfall simulation experiments: A laboratory study. In: Water (Switzerland). 2019 ; Vol. 11, No. 6.
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Comparative analysis of splash erosion devices for rainfall simulation experiments: A laboratory study. / Fernández-Raga, María; Campo, Julián; Rodrigo-Comino, Jesús; Keesstra, Saskia D.

In: Water (Switzerland), Vol. 11, No. 6, 1228, 01.06.2019.

Research output: Contribution to journalArticleAcademicpeer-review

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T1 - Comparative analysis of splash erosion devices for rainfall simulation experiments: A laboratory study

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AU - Campo, Julián

AU - Rodrigo-Comino, Jesús

AU - Keesstra, Saskia D.

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N2 - For the study of soil erosion it is important to set up the experiments well. In the experimental design one of the key factors is the choice of the measurement device. This is especially important when one part of the erosion process needs to be isolated, such as for splash erosion. Therefore, the main aim of this research is to list the general characteristics of the commonly used splash erosion devices and to discuss the performance, to be able to relate them, and make suggestions regarding their use. The devices we selected for this comparative comparison were: the splash cup, funnel, Morgan tray, Tübingen cup, tower, and the gutter. The devices were tested under the same conditions (rainfall characteristics, slope, and soil type) to assess their hydrological response under different intensities of simulated rainfall. All devices were installed on a sloping plot (10°) with sandy soil, and were exposed to 10 min. of simulated rain with intensities ranging from 60 to 172 mm/h to measure the splashed sediment, and to describe problems and differences among them. The results showed that the Tübingen cup was the best performing device to measure kinetic energy of the rain, but, because of its design, it is not possible to measure the detached splashed sediment under natural (field) conditions. On the other hand, the funnel device showed a significant relation with rain intensity because it loses little sediment to washing. In addition, the device is easy to use and cheap. Therefore, this device is highly recommended to estimated splash erosion. to the good performance measuring the actual splash erosion, because it loses little sediment by washing. The device is also cheap and easy to install and manage.

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