Modeling of a debris flow from the Hrenovec torrential watershed above the village of Kropa

In this paper, debris-flow modeling is shown specifically on the basis of a potential debris flow from the Hrenovec torrential watershed above the village of Kropa in NW Slovenia. This site was chosen, because in this particular torrential watershed a small surficial landslide turned into a debris f...

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Main Authors: Jošt Sodnik, Matjaž Mikoš
Format: Article
Language:English
Published: ZRC SAZU, Založba ZRC 2010-12-01
Series:Acta Geographica Slovenica
Subjects:
Online Access:https://ojs.zrc-sazu.si/ags/article/view/1290
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author Jošt Sodnik
Matjaž Mikoš
author_facet Jošt Sodnik
Matjaž Mikoš
author_sort Jošt Sodnik
collection DOAJ
description In this paper, debris-flow modeling is shown specifically on the basis of a potential debris flow from the Hrenovec torrential watershed above the village of Kropa in NW Slovenia. This site was chosen, because in this particular torrential watershed a small surficial landslide turned into a debris flow during a storm on September 18, 2007. Fortunately, the debris flow stopped inside the torrential channel above the village of Kropa. Using public available data on rainfall and topography, we developed two scenarios of debris-flow triggering with an estimated magnitude of 50,000 m3. According the first scenario, a debris flow triggers during rainfall with the 100-year return period, and according the second one, it triggers during extreme rainfall as measured during the storm on September 18, 2007. For both scenarios, we used for debris-flow modeling a commercial two-dimensional mathematical model Flo-2d. The obtained results are shown in the form of computed flow depths and velocities over a cartographic background. The results show to possible catastrophic consequences in the village of Kropa, much worse that set in by torrential flood during the storm on September 18, 2007.
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spelling doaj.art-64592968ed694dc2a4da00d58a311a132022-12-22T02:46:21ZengZRC SAZU, Založba ZRCActa Geographica Slovenica1581-66131581-83142010-12-01501598410.3986/AGS501031014Modeling of a debris flow from the Hrenovec torrential watershed above the village of KropaJošt SodnikMatjaž MikošIn this paper, debris-flow modeling is shown specifically on the basis of a potential debris flow from the Hrenovec torrential watershed above the village of Kropa in NW Slovenia. This site was chosen, because in this particular torrential watershed a small surficial landslide turned into a debris flow during a storm on September 18, 2007. Fortunately, the debris flow stopped inside the torrential channel above the village of Kropa. Using public available data on rainfall and topography, we developed two scenarios of debris-flow triggering with an estimated magnitude of 50,000 m3. According the first scenario, a debris flow triggers during rainfall with the 100-year return period, and according the second one, it triggers during extreme rainfall as measured during the storm on September 18, 2007. For both scenarios, we used for debris-flow modeling a commercial two-dimensional mathematical model Flo-2d. The obtained results are shown in the form of computed flow depths and velocities over a cartographic background. The results show to possible catastrophic consequences in the village of Kropa, much worse that set in by torrential flood during the storm on September 18, 2007.https://ojs.zrc-sazu.si/ags/article/view/1290geographyslope processesdebris flowsrisk assessmentmathematical modelingkropaslovenia
spellingShingle Jošt Sodnik
Matjaž Mikoš
Modeling of a debris flow from the Hrenovec torrential watershed above the village of Kropa
Acta Geographica Slovenica
geography
slope processes
debris flows
risk assessment
mathematical modeling
kropa
slovenia
title Modeling of a debris flow from the Hrenovec torrential watershed above the village of Kropa
title_full Modeling of a debris flow from the Hrenovec torrential watershed above the village of Kropa
title_fullStr Modeling of a debris flow from the Hrenovec torrential watershed above the village of Kropa
title_full_unstemmed Modeling of a debris flow from the Hrenovec torrential watershed above the village of Kropa
title_short Modeling of a debris flow from the Hrenovec torrential watershed above the village of Kropa
title_sort modeling of a debris flow from the hrenovec torrential watershed above the village of kropa
topic geography
slope processes
debris flows
risk assessment
mathematical modeling
kropa
slovenia
url https://ojs.zrc-sazu.si/ags/article/view/1290
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AT matjazmikos modelingofadebrisflowfromthehrenovectorrentialwatershedabovethevillageofkropa