Energie von Niederschlägen aus auslösende Kraft für Bodenerosion und -transport
Abstract
Soil erosion processes are highly dependent on the rainfall energy which is a function of the size and falling velocity of raindrops. Interactions between raindrop size, velocity and shape, wind speed and the intensity of the thunderstorm control the power of the erosive storm. As raindrops increase in size, their terminal velocity and momentum increase. Increasing raindrop size increases their kinetic energy which affects soil detachment and transport processes. Limited data on raindrop characteristics are available; most studies were performed in a laboratory or field setting covering only a few storms. Objectives of this study are to 1) quantify and compare drop size distributions of rainfall events at comparable locations in Austria, Czech Republic, and New Zealand, 2) derive rainfall kinetic energy (KE) - intensity (I) relationships for rainfall erosivity estimation, 3) evaluate temporal/seasonal distribution of the KE-I relationship, and 4) investigate the relationship between rainfall erosivity and soil erosion. At several sites in Austria, Czech Republic and New Zealand disdrometers will be installed to determine the erosive force of rainstorms. Relationships between rainfall kinetic energy and intensity will be determined with respect to seasonal/monthly variability. For those sites with measured wind data, the impact of wind speed and direction will be evaluated. Next to the disdrometers small erosion plots will be installed to register the erosive force of the rainfall events. Based on the obtained results we will check and possibly modify and adapt the existing correlations between rainfall energy and soil detachment and transport.
Publikationen
Measuring the kinetic energy of rainfall and the soil particles detachment
Autoren: ZUMR, D., M. NEUMANN, T. LABURDA, J. DAVATY, P. KAFKA, J. KRASA, M. SOBOTKOVA, T. DOSTAL, L. JOHANNSEN, N. BALENOVIC, A. KLIK, P. STREAUSS, O. FISER, and Z. CHLADOVA Jahr: 2018
Conference & Workshop proceedings, paper, abstract
Investigation of rainfall kinetic energy in Central Europe and New Zealand
Autoren: Lisbeth Lisbeth Johannsen, Nives Nives Balenovic, Peter Strauss, Tomas Dostal, Martin Neumann, Jakub Jerábek, David Zumr, Mike Arnaiz, Thomas A. Cochrane and Andreas Klik Jahr: 2018
Conference & Workshop proceedings, paper, abstract
Splash erosion of three soils under natural rainfall conditions in Central Europe and Nerw Zealand
Autoren: Balenovic, N., Johannsen, L. L., Strauss, P., Dostal, T., Devaty, J., Laburda, T., Krasa, J., Zumr, D., Cochrane, T., Arnaiz, M., and Klik, A. Jahr: 2018
Conference & Workshop proceedings, paper, abstract
Photogrammetric measurement of soil surface properties after splash erosion under natural and artificial rainfall
Autoren: Tomas Laburda, Josef Krasa, Michal Vrana, Nives Balenovic, Lisbeth Lolk Johannsen, Petr Kavka, David Zumr, Martin Neumann, Peter Strauss, Andreas Klik, Tomas Dostal Jahr: 2018
Conference & Workshop proceedings, paper, abstract
Comparison of the rainfall kinetic energy measured by different distrometers
Autoren: Martin Neumann, David Zumr, Tomáš Laburda, Petr Kavka, Lisbeth L. Johannsen, Nives Balenovic, Zuzana Chládová, Ondřej Fišer, Peter Strauss, Tomáš Dostál, and Andreas Klik Jahr: 2018
Conference & Workshop proceedings, paper, abstract
Comparison of three types of disdrometers under natural rainfall.
Autoren: JOHANNSEN, LL., N. BALENOVIC, P. STRAUSS, T. DOSTAL, M. NEUMANN, D. ZUMR, T. COCHRANE, and A. KLIK Jahr: 2019
Conference & Workshop proceedings, paper, abstract
Comparison of three types of laser optical disdrometers under natural rainfall conditions
Autoren: Johannsen, Lisbeth Lolk; Zambon, Nives; Strauss, Peter; Dostal, Tomas; Neumann, Martin; Zumr, David; Cochrane, Thomas A.; Klik, Andreas Jahr: 2019
Sonstige Werke
Project staff
Andreas Klik
Ao.Univ.Prof.i.R. Dipl.-Ing. Dr.nat.techn. Andreas Klik
andreas.klik@boku.ac.at
Tel: +43 1 47654-81567
Project Leader
01.04.2017 - 31.12.2020