im PublikationsserverTitelangaben
Rom, Jakob ; Haas, Florian
; Heckmann, Tobias ; Altmann, Moritz ; Fleischer, Fabian ; Ressl, Camillo ; Betz-Nutz, Sarah ; Becht, Michael:
Spatio-temporal analysis of slope-type debris flow activity in Horlachtal, Austria, based on orthophotos and lidar data since 1947.
In: Natural Hazards and Earth System Sciences. 23 (2023) 2.
- S. 601-622.
ISSN 1561-8633 ; 1684-9981
Volltext
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Link zum Volltext (externe URL): https://doi.org/10.5194/nhess-23-601-2023 |
Kurzfassung/Abstract
In order to get a better understanding about the future development of alpine slope-type debris flows in the frame of climate change, complete and gapless records for the last century for this type of geomorphologic process are necessary. However, up to now such records are scarce. Here, the slope-type debris flow activity in the Horlachtal, Austria since 1947 is investigated with the help of historic and recent area-wide remote sensing data. Using geomorphological mapping, both spatial and temporal variabilities in debris flow dynamics can be shown. The results indicate short-term variations rather than consistent increasing or decreasing trends of slope-type debris flow activity in Horlachtal. Specifically, three active periods between 1954 and 1973, 1990 and 2009 as well as between 2015 and 2018 can be registered. Analyses of the deposited debris flow volumes show that for parts of the study area the largest volumes appeared in the early 1990s which might have even influenced the dynamics in the following years. Studies on the spatial variabilities revealed differences of slope-type debris flow activity within the study area and point to local rainfall events as triggers. However, long-term precipitation data of high temporal resolution of two alpine meteorological stations do not reveal increasing or decreasing trends in the occurence of such events.
Forschungsprojekte
Research Unit SEHAG - Sensitivity of high Alpine geosystems to climate change since 1850 (SEHAG)
Weitere Angaben
| Publikationsform: | Artikel |
|---|---|
| Sprache des Eintrags: | Englisch |
| Institutionen der Universität: | Mathematisch-Geographische Fakultät > Geographie > Lehrstuhl für Physische Geographie |
| DOI / URN / ID: | 10.5194/nhess-23-601-2023 |
| Open Access: Freie Zugänglichkeit des Volltexts?: | Ja (Förderung durch DFG-Mittel) |
| Peer-Review-Journal: | Ja |
| Verlag: | Copernicus |
| Die Zeitschrift ist nachgewiesen in: | |
| Titel an der KU entstanden: | Ja |
| KU.edoc-ID: | 31606 |
Letzte Änderung: 19. Jun 2024 08:44
URL zu dieser Anzeige: https://edoc.ku.de/id/eprint/31606/
