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| DOI | 10.1002/esp.5859 |
| Analysing the impacts of extreme torrential events using multi-temporal LiDAR datasets-The Schöttlbach catchment, Upper Styria, Austria | |
| 发表日期 | 2024 |
| ISSN | 0197-9337 |
| EISSN | 1096-9837 |
| 英文摘要 | Extreme precipitation events in small alpine catchments trigger hazardous hydro-geomorphic processes that cause considerable damage to settlements and infrastructure. In summer 2011 and 2017, two flood events mobilizing large amounts of sediments struck the town of Oberw & ouml;lz (Styria, Austria) located at the outlet of the Sch & ouml;ttlbach catchment. We used data from local weather stations and precipitation radar to analyse the meteorological settings that caused the flooding. We compiled a consistent sediment budget for the 2017 event by combining geomorphic mapping, connectivity analysis, high-resolution airborne LiDAR (ALS) and uncrewed aerial vehicle (UAV)-borne LiDAR (ULS), data from other authors for the 2011 event and external information (e.g., event analysis and excavation data). The 2017 event mobilized higher sediment volumes than the 2011 event (131 000 m3 vs 90 000 m3) even though 24-h precipitation and peak discharges were lower in 2017. First assumptions that the larger sediment output was caused by the reworking of the 2011 flood deposits proved to be incorrect. The impacts of the 2011 event affected the resilience of the geomorphic system resulting in a significantly higher hillslope sediment supply. We conclude that sediment transport in alpine catchments can increase disproportionately when recurrence intervals fall below a critical level. The Sch & ouml;ttlbach catchment recorded two major flood events in July 2011 and August 2017. On the basis of reports, geomorphic mapping and the analysis of multi-temporal LiDAR datasets, we tried to analyse the impacts on the local geomorphic system and constructed an event-scaled sediment budget for the 2017 event. image |
| 英文关键词 | alpine catchment; erosion; extreme events; sediment budget; ULS |
| 语种 | 英语 |
| WOS研究方向 | Physical Geography ; Geology |
| WOS类目 | Geography, Physical ; Geosciences, Multidisciplinary |
| WOS记录号 | WOS:001231991000001 |
| 来源期刊 | EARTH SURFACE PROCESSES AND LANDFORMS
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| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/300066 |
| 作者单位 | University of Graz; University of Graz; University of Bayreuth |
| 推荐引用方式 GB/T 7714 | . Analysing the impacts of extreme torrential events using multi-temporal LiDAR datasets-The Schöttlbach catchment, Upper Styria, Austria[J],2024. |
| APA | (2024).Analysing the impacts of extreme torrential events using multi-temporal LiDAR datasets-The Schöttlbach catchment, Upper Styria, Austria.EARTH SURFACE PROCESSES AND LANDFORMS. |
| MLA | "Analysing the impacts of extreme torrential events using multi-temporal LiDAR datasets-The Schöttlbach catchment, Upper Styria, Austria".EARTH SURFACE PROCESSES AND LANDFORMS (2024). |
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