气候变化领域集成服务门户(CCPortal): New insights into the catastrophic slope failures at Sau Mau Ping: the role of antecedent rainfall pattern

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DOI	10.1007/s10346-024-02247-3
	New insights into the catastrophic slope failures at Sau Mau Ping: the role of antecedent rainfall pattern
	Natalia, Levinna; Yang, Jun
发表日期	2024
ISSN	1612-510X
EISSN	1612-5118
英文摘要	Climate change is increasing the frequency and intensity of extreme rainfall events, which aggravate the threat to the safety of natural and man-made slopes. There is growing interest in the role of rainfall characteristics in these slope failures. Most of previous studies treated the rainfall individually or as cumulative value and used hypothetical rainfall temporal patterns with no association with actual physical failures. In this study, the two deadly landslides in Sau Mau Ping, Hong Kong, in June 1972 and August 1976, which caused 165 casualties, are revisited. An intriguing question that has long been overlooked is posed: why the slopes that withstood the 1972 rainfall failed in the 1976 rainfall, given that the rainfall intensity of the latter event was only half of the former? Based on an extensive review of the forensic reports and relevant studies on the failure events, numerical modeling is carried out by a combination of seepage analysis with stability analysis and unsaturated shear strength theory. Focus is placed on the geological and hydrological settings and the rainfall characteristics, particularly the temporal pattern of the antecedent and main rainfall, to look into the causes and mechanisms for these failures. Implications of the new findings for future research and practice are also highlighted.
英文关键词	Rainfall-induced landslides; Antecedent rainfall; Rainfall temporal pattern; Landslide hazard
语种	英语
WOS研究方向	Engineering ; Geology
WOS类目	Engineering, Geological ; Geosciences, Multidisciplinary
WOS记录号	WOS:001200728300001
来源期刊	LANDSLIDES
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/297114
作者单位	University of Hong Kong
推荐引用方式 GB/T 7714	Natalia, Levinna,Yang, Jun. New insights into the catastrophic slope failures at Sau Mau Ping: the role of antecedent rainfall pattern[J],2024.
APA	Natalia, Levinna,&Yang, Jun.(2024).New insights into the catastrophic slope failures at Sau Mau Ping: the role of antecedent rainfall pattern.LANDSLIDES.
MLA	Natalia, Levinna,et al."New insights into the catastrophic slope failures at Sau Mau Ping: the role of antecedent rainfall pattern".LANDSLIDES (2024).