Výsledky vyhledávání - "Roland Kaitna"

Sediment dynamics related to the triggering of debris flows in different alpine watersheds

Autor: Roland Kaitna, Philipp Aigner, Tazio Bernardi, Philipp Wagner, Erik Kuschel, Christian Zangerl, Markus Hrachowitz, Leonard Sklar

Debris flows initiate by a critical combination of abundant sediment, steep inclination, and water. The latter is mostly provided by rainfall that can lead to landslides at the hillslope or along the channel and/or erosion and bulking of sediment due

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::873ee63aaa147f11df546b0ec7931dc7
https://doi.org/10.5194/egusphere-egu23-8751

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Application of pulse-Doppler radar and 3D LiDAR for high-resolution velocity measurements of three debris flows at Illgraben (Switzerland)

Autor: Tobias Schöffl, Jordan Aaron, Roland Kaitna, Johannes Hübl

The surface velocity of debris flows is constantly subject to strong temporal and spatial fluctuations. These are amplified by the pulse-like occurrence of surges throughout the event and by the high variance of the solids fraction. However, continuo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2d3191a78ab89c81f3c1f6a4da1a254c
https://doi.org/10.5194/egusphere-egu23-17212

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Control mechanisms of pore-pressure dissipation in debris flows

Autor: Hongchao Zheng, Zhenming Shi, Roland Kaitna, Fei Zhao, Tjalling de Haas, Kevin J. Hanley

Publikováno v: Zheng, H, Shi, Z, Kaitna, R, Zhao, F, de Haas, T & Hanley, K J 2023, ' Control mechanisms of pore-pressure dissipation in debris flows ', Engineering Geology, vol. 317, 107076 . https://doi.org/10.1016/j.enggeo.2023.107076

Debris flows are typically saturated mixtures of debris grains and interstitial slurry consisting of water and clay. Pore pressure in slurry plays a crucial role in the characteristic behavior and runout of debris flows. However, the mechanisms that

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b67e18a7fc2551330ceb521a76a0e3c2
https://hdl.handle.net/20.500.11820/c98a9358-5df8-442d-90df-664fa717f316

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Variable hydrograph inputs for a numerical debris-flow runout model

Autor: Andrew Mitchell, Sophia Zubrycky, Scott McDougall, Jordan Aaron, Mylène Jacquemart, Johannes Hübl, Roland Kaitna, Christoph Graf

Publikováno v: Natural Hazards and Earth System Sciences Discussions
Natural Hazards and Earth System Sciences, 22 (5)

Debris flows affect people and infrastructure around the world, and as a result, many numerical models and modelling approaches have been developed to simulate their impacts. Observations from instrumented debris-flow channels show that variability i

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::922b75916b3c184a8d946ea910b7686d
https://doi.org/10.5194/nhess-22-1627-2022

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Changes of hydro-meteorological trigger conditions for debris flows in a future alpine climate

Autor: Roland Kaitna, David Prenner, Matt Switanek, Douglas Maraun, Markus Stoffel, Markus Hrachowitz

Publikováno v: Science of the Total Environment, 872

Debris-flow activity is strongly controlled by hydro-meteorological trigger conditions, which are expected to change in a future climate. In this study we connect a regional hydro-meteorological susceptibility model for debris flows with climate proj

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0dd787a91af38ccba3d42f1171d19348
http://resolver.tudelft.nl/uuid:90e4210e-2653-48e2-ad9a-067ef837b353

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