Mitigation Strategy for Low-frequency Large-magnitude Debris Flows in Hong Kong

Potential hazards arising from low-frequency large-magnitude debris flows have become apparent under the adverse impact of climate change and extreme weather. Hong Kong has systematically managed landslide risks arising from man-made slopes and natural hillsides since 1977, owing to its unique geogr...

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Main Authors: Ko Florence, Chan Chris, Ho Hoi-yan, So Kevin
Format: Article
Language:English
Published: EDP Sciences 2023-01-01
Series:E3S Web of Conferences
Online Access:https://www.e3s-conferences.org/articles/e3sconf/pdf/2023/52/e3sconf_dfhm82023_06009.pdf
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author Ko Florence
Chan Chris
Ho Hoi-yan
So Kevin
author_facet Ko Florence
Chan Chris
Ho Hoi-yan
So Kevin
author_sort Ko Florence
collection DOAJ
description Potential hazards arising from low-frequency large-magnitude debris flows have become apparent under the adverse impact of climate change and extreme weather. Hong Kong has systematically managed landslide risks arising from man-made slopes and natural hillsides since 1977, owing to its unique geographic location, steep terrain, deep weathering profile and post-war rapid urban development. In recent years, evaluation of potential hazards arising from low-frequency large-magnitude debris flows and their possible dire consequences has developed into a key part of the landslide mitigation effort in Hong Kong in light of the occurrence of more frequent and more severe extreme rainfall events. Valuable experience is gained in identifying potential low-frequency large-magnitude debris flow hazards, assessing their potential impacts to the public located at the densely populated foothills and developing a holistic strategy to mitigate against potentially catastrophic consequences. This paper sets out the mitigation strategy for mitigating low-frequency large-magnitude debris flows in Hong Kong and gives a case study to demonstrate the approach.
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spelling doaj.art-fcf3679684ca46d0a08cd099150fd3c72023-08-21T09:02:30ZengEDP SciencesE3S Web of Conferences2267-12422023-01-014150600910.1051/e3sconf/202341506009e3sconf_dfhm82023_06009Mitigation Strategy for Low-frequency Large-magnitude Debris Flows in Hong KongKo Florence0Chan Chris1Ho Hoi-yan2So Kevin3Geotechnical Engineering Office, Civil Engineering and Development DepartmentGeotechnical Engineering Office, Civil Engineering and Development DepartmentGeotechnical Engineering Office, Civil Engineering and Development DepartmentGeotechnical Engineering Office, Civil Engineering and Development DepartmentPotential hazards arising from low-frequency large-magnitude debris flows have become apparent under the adverse impact of climate change and extreme weather. Hong Kong has systematically managed landslide risks arising from man-made slopes and natural hillsides since 1977, owing to its unique geographic location, steep terrain, deep weathering profile and post-war rapid urban development. In recent years, evaluation of potential hazards arising from low-frequency large-magnitude debris flows and their possible dire consequences has developed into a key part of the landslide mitigation effort in Hong Kong in light of the occurrence of more frequent and more severe extreme rainfall events. Valuable experience is gained in identifying potential low-frequency large-magnitude debris flow hazards, assessing their potential impacts to the public located at the densely populated foothills and developing a holistic strategy to mitigate against potentially catastrophic consequences. This paper sets out the mitigation strategy for mitigating low-frequency large-magnitude debris flows in Hong Kong and gives a case study to demonstrate the approach.https://www.e3s-conferences.org/articles/e3sconf/pdf/2023/52/e3sconf_dfhm82023_06009.pdf
spellingShingle Ko Florence
Chan Chris
Ho Hoi-yan
So Kevin
Mitigation Strategy for Low-frequency Large-magnitude Debris Flows in Hong Kong
E3S Web of Conferences
title Mitigation Strategy for Low-frequency Large-magnitude Debris Flows in Hong Kong
title_full Mitigation Strategy for Low-frequency Large-magnitude Debris Flows in Hong Kong
title_fullStr Mitigation Strategy for Low-frequency Large-magnitude Debris Flows in Hong Kong
title_full_unstemmed Mitigation Strategy for Low-frequency Large-magnitude Debris Flows in Hong Kong
title_short Mitigation Strategy for Low-frequency Large-magnitude Debris Flows in Hong Kong
title_sort mitigation strategy for low frequency large magnitude debris flows in hong kong
url https://www.e3s-conferences.org/articles/e3sconf/pdf/2023/52/e3sconf_dfhm82023_06009.pdf
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