Possibilities and precision of volumetric analyses of ephemeral gullies via UAV monitoring

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F19%3A00339316" target="_blank" >RIV/68407700:21110/19:00339316 - isvavai.cz</a>
Result on the web
<a href="http://www.fao.org/about/meetings/soil-erosion-symposium/en/" target="_blank" >http://www.fao.org/about/meetings/soil-erosion-symposium/en/</a>
DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Possibilities and precision of volumetric analyses of ephemeral gullies via UAV monitoring
Original language description
Team of the CTU in Prague focused on monitoring of ephemeral gullies and rills in Benesov region (Czech Republic) since 2012 and summarized some volumetric data from single fields and single event UAV studies. For Bykovice watershed in the Benesov region (8 km2) in 2015 all available aerial photographs since 1998 were collected, rectified and inspected to derive temporal variations of ephemeral gullies. For Postupice field (0,125 km2) the total volume of ca 2000 m3 was estimated to emerge in erosion rills and ephemeral gullies, after 40 mm (120 min) rainfall event in 27th April 2013. For nearby Lbosin field (0,29 km2) the estimated volume of rills caused by single rainfall (ca 38 mm/30 min) in 11th August 2017 reached 3300 m3. Based on the UAV studies the methodology for semi-automated volumetric analyses of rills has been developed (Báčová et al., 2018). Based on the insights we can conclude, that after single events, large systems of rills and ephemeral gullies can emerge, that rise up to hundreds of tons per ha of the field. UAVs can effectively be used to better estimate actual soil erosion losses.
Czech name
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Czech description
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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