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  Multi-sensor investigation of particle movement in snow avalanches

Neuhauser, M., Rene, N., Kuß, J., Adams, M., Köhler, A., Winkler, R., Dressler, F., Fellin, W., Gerstmayr, J., Fischer, J.-T. (2023): Multi-sensor investigation of particle movement in snow avalanches, XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-3488

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Datensatz-Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5019454 Versions-Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5019454_2
Genre: Konferenzbeitrag

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 Urheber:
Neuhauser, Michael1, Autor
Rene, Neurauter1, Autor
Kuß, Jonas1, Autor
Adams, Marc1, Autor
Köhler, Anselm1, Autor
Winkler, Robert1, Autor
Dressler, Falko1, Autor
Fellin, Wolfgang1, Autor
Gerstmayr, Johannes1, Autor
Fischer, Jan-Thomas1, Autor
Affiliations:
1IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations, ou_5011304              

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Schlagwörter: -
 Zusammenfassung: Knowledge of particle motion in snow avalanches is crucial to understand the driving processes, determining transport phenomena or to quantify the avalanche’s destructiveness and mobility. To better understand inner avalanche dynamics regarding acceleration, rotation and velocity on a particle level, the in-flow sensor system AvaNode was developed. These synthetic particles with different shapes, densities and sizes, are transported with the avalanche flow and are equipped with state-of-the-art, low-cost sensors, like an inertial measurement unit (IMU), a global navigation satellite system (GNSS) and radio ranging (RR). Experiments inside small to medium sized avalanches in the winter seasons 2021/22 and 2022/23, were combined with supplementary radar measurements, examining the particle trajectory in relation to the avalanche flow. By merging the multi sensor datasets, we were able to relate the magnitude of measured accelerations and rotation rates to different flow phases that were identified via GNSS tracking. The three identified particle flow phases are: (I) an initial, rapid acceleration, (II) a shorter steady state flow accompanied by the highest velocities and (III) a longer deceleration phase characterized by the largest measured rotations. The performed experiments and acquired datasets, show that the multi sensor analysis leads to a more versatile data interpretation and highlights the strengths and weaknesses of each sensor technology. A detailed analysis of the data allowed to reveal several interesting flow features on the particle level and highlights the potential of the extendable in flow measurement system AvaNode towards experimentally investigating and computationally simulating further snow and particle properties.

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Sprache(n): eng - Englisch
 Datum: 2023
 Publikationsstatus: Final veröffentlicht
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: -
 Identifikatoren: DOI: 10.57757/IUGG23-3488
 Art des Abschluß: -

Veranstaltung

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Titel: XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Veranstaltungsort: Berlin
Start-/Enddatum: 2023-07-11 - 2023-07-20

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Titel: XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Genre der Quelle: Konferenzband
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: Potsdam : GFZ German Research Centre for Geosciences
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