Recent Evolution of Debris-Flow Fans in the Central Swiss ALPS and Associated Risk Assessment: Two Examples in Roseg Valley
| العنوان: | Recent Evolution of Debris-Flow Fans in the Central Swiss ALPS and Associated Risk Assessment: Two Examples in Roseg Valley |
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| المؤلفون: | Valentina Garavaglia, Manuela Pelfini, A. Bini, Luca Arzuffi, M. Bozzoni |
| المصدر: | Physical Geography. 30:105-129 |
| بيانات النشر: | Informa UK Limited, 2009. |
| سنة النشر: | 2009 |
| مصطلحات موضوعية: | Hydrology, Atmospheric Science, geography, geography.geographical_feature_category, Landform, Drainage basin, Pinus cembra, Hazard, Debris, food.food, Debris flow, Sedimentary depositional environment, food, Earth and Planetary Sciences (miscellaneous), General Earth and Planetary Sciences, Risk assessment, Geology, General Environmental Science |
| الوصف: | This paper reports the results of research carried out in the Roseg Valley (Lower Engadine, Switzerland) that examines debris-flow fan typology, debris-flow activity, and the impact of debris flows on forest vegetation. Depositional landforms from debris flows were subdivided according to their degree of geomorphological hazard. An inventory of debris-flow fans and a detailed geomorphological, vegetational, and dendrochronological study of two of them was undertaken. The dendrochronological analysis allowed dating of historical events and reconstruction of their recent evolution. By dating scars and growth anomalies on Larix decidua Mill. and Pinus cembra L., 24 debris-flow events were identified on the Misaun fan and 16 on the Tschierva fan, and differences in their distribution due to drainage basin characteristics identified. Fans chosen for this investigation are crossed by a hiking trail that is frequently used by tourists during the summer season. A qualitative hazard and risk evaluation were undert... |
| تدمد: | 1930-0557 0272-3646 |
| DOI: | 10.2747/0272-3646.30.2.105 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::c0deacdcb4d38d2663b15327ff42b5ac https://doi.org/10.2747/0272-3646.30.2.105 |
| رقم الانضمام: | edsair.doi...........c0deacdcb4d38d2663b15327ff42b5ac |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 19300557 02723646 |
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| DOI: | 10.2747/0272-3646.30.2.105 |