About: Simulation of wind field influenced by windbreaks

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Description	The paper summarizes the results of wind speed measuring at different distances from selected windbreak in combination with optical porisity (OP) determination in different periods. Wind speed at 2 m above the soil surface had been measured since 2006. Thirty images of different phenological stages from 2006 to 2010 were analyzed. The highest correlation was found out when use the wind speed measurement at 50 m on the leeward side. The dependence decreases with increasing distance. Full foliage reduces a wind speed about 60% at 50 m and about 30% at 150 m on the leeward. These values for non-foliaged windbreaks decrease on 80 and 90%. Maximum distance of windbreak effect on wind speed reduction was found out by the extrapolation of the curves constructed using the regression equation of wind speed reduction in dependence on OP and different distances from the windbreak. Regardless OP the reduction effect disappears at a distance of 250 m. The quietest zone of evaluated windbreak with an average height of 15-18 m was detected in the area about four times the height. The paper summarizes the results of wind speed measuring at different distances from selected windbreak in combination with optical porisity (OP) determination in different periods. Wind speed at 2 m above the soil surface had been measured since 2006. Thirty images of different phenological stages from 2006 to 2010 were analyzed. The highest correlation was found out when use the wind speed measurement at 50 m on the leeward side. The dependence decreases with increasing distance. Full foliage reduces a wind speed about 60% at 50 m and about 30% at 150 m on the leeward. These values for non-foliaged windbreaks decrease on 80 and 90%. Maximum distance of windbreak effect on wind speed reduction was found out by the extrapolation of the curves constructed using the regression equation of wind speed reduction in dependence on OP and different distances from the windbreak. Regardless OP the reduction effect disappears at a distance of 250 m. The quietest zone of evaluated windbreak with an average height of 15-18 m was detected in the area about four times the height. (en)
Title	Simulation of wind field influenced by windbreaks Simulation of wind field influenced by windbreaks (en)
skos:prefLabel	Simulation of wind field influenced by windbreaks Simulation of wind field influenced by windbreaks (en)
skos:notation	RIV/62156489:43210/12:00190300!RIV13-MZE-43210___
http://linked.open...avai/predkladatel	Agronomická fakulta
http://linked.open...avai/riv/aktivita	P
http://linked.open...avai/riv/aktivity	P(QH82099)
http://linked.open...vai/riv/dodaniDat	2013
http://linked.open...aciTvurceVysledku	Středa, Tomáš
http://linked.open.../riv/druhVysledku	D - Článek ve sborníku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Mendelova univerzita v Brně / Agronomická fakulta
http://linked.open...dnocenehoVysledku	168065
http://linked.open...ai/riv/idVysledku	RIV/62156489:43210/12:00190300
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	optical porosity; wind erosion; windbreak (en)
http://linked.open.../riv/klicoveSlovo	optical porosity windbreak wind erosion
http://linked.open...ontrolniKodProRIV	[050EDBAA3134]
http://linked.open...v/mistoKonaniAkce	Ústí nad Labem
http://linked.open...i/riv/mistoVydani	Praha
http://linked.open...i/riv/nazevZdroje	Bioclimate 2012: Bioclimatology of Ecosystems
http://linked.open...in/vavai/riv/obor	DG
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	4 (xsd:int)
http://linked.open...vavai/riv/projekt	Criteria of wind erosion expansion on heavy-textured soils and possibilities of its limitation with biotechnological control measurements.
http://linked.open...UplatneniVysledku	2012
http://linked.open...iv/tvurceVysledku	Rožnovský, Jaroslav Středa, Tomáš Středová, Hana Litschmann, Tomáš
http://linked.open...vavai/riv/typAkce	EUR - Evropská
http://linked.open.../riv/zahajeniAkce	2012-01-01 (xsd:date)
number of pages	2 (xsd:int)
http://purl.org/ne...btex#hasPublisher	Česká zemědělská univerzita v Praze
https://schema.org/isbn	978-80-213-2299-8
http://localhost/t...ganizacniJednotka	43210
is http://linked.open...avai/riv/vysledek of	Simulation of wind field influenced by windbreaks

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