Experimental monitoring of the relationship between rainfall kinetic energy and splash erosion

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F18%3A00324619" target="_blank" >RIV/68407700:21110/18:00324619 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

čeština

Original language name

Laboratorní monitorování vztahu mezi kinetickou energií deště a rozpadem půdních agregátů

Original language description

Rainfall simulator is a common tool used to study the impact of rainfall on soil. This study presents the effect of various rainfall intensities and related kinetic energies to splash erosion under controlled experimental conditions. We used “Norton ladder” laboratory rainfall simulator to recurrently simulate several rainfall patterns with given kinetic energy and rainfall intensity. Firstly, twelve positions under the simulator were assigned, the rainfall kinetic energy and intensity were measured for every position, as spatial distribution of neihter intensity nor kinetic energy is homogeneus. Range of kinetic energy was between 180 and 680 J m-2 h-1, the rainfall intensity was 19 - 71 mm h-1. Secondly, a soil sample packed into splash cup (a plastic cylinder with a surface area of 88 cm2) was positioned in the centre of the splash collector with outer diameter of 45 cm. The splash cups were placed on all the preselected positions. After every rainfall simulation, the splashed material was collected, filtered and dried in air dryer to estimate total amount of soil loss. Photographs of soil surface before and after the experiments were taken to create digital model of relief and to calculate change of roughness and rate of soil compaction. Here we present results of theobserved relationship between rainfall intensity, kinetic energy and splash erosion for a single tested loamy soil.

Czech name

Laboratorní monitorování vztahu mezi kinetickou energií deště a rozpadem půdních agregátů

Czech description

Rainfall simulator is a common tool used to study the impact of rainfall on soil. This study presents the effect of various rainfall intensities and related kinetic energies to splash erosion under controlled experimental conditions. We used “Norton ladder” laboratory rainfall simulator to recurrently simulate several rainfall patterns with given kinetic energy and rainfall intensity. Firstly, twelve positions under the simulator were assigned, the rainfall kinetic energy and intensity were measured for every position, as spatial distribution of neihter intensity nor kinetic energy is homogeneus. Range of kinetic energy was between 180 and 680 J m-2 h-1, the rainfall intensity was 19 - 71 mm h-1. Secondly, a soil sample packed into splash cup (a plastic cylinder with a surface area of 88 cm2) was positioned in the centre of the splash collector with outer diameter of 45 cm. The splash cups were placed on all the preselected positions. After every rainfall simulation, the splashed material was collected, filtered and dried in air dryer to estimate total amount of soil loss. Photographs of soil surface before and after the experiments were taken to create digital model of relief and to calculate change of roughness and rate of soil compaction. Here we present results of theobserved relationship between rainfall intensity, kinetic energy and splash erosion for a single tested loamy soil.

Type

D - Article in proceedings

CEP classification

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OECD FORD branch

10501 - Hydrology

Project

<a href="/en/project/GF17-33751L" target="_blank" >GF17-33751L: Kinetic energy of rainfall as driving force of soil detachment and transport</a><br>

Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

TRANSPORT VODY, CHEMIKÁLIÍ A ENERGIE V SYSTÉME PÔDA-RASTLINA-ATMOSFÉRA

ISBN

978-80-89139-42-2

ISSN

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e-ISSN

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Number of pages

8

Pages from-to

216-223

Publisher name

Institute of Hydrology SAS

Place of publication

Bratislava

Event location

Bratislava

Event date

Nov 7, 2018

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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