Detection and forecasting of shallow landslides: lessons from a natural laboratory
Detection and forecasting of shallow landslides: lessons from a natural laboratory
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浅层滑坡的检测和预报:自然实验室的经验教训
DOI:
10.1080/19475705.2022.2041108
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发表时间:
2022
期刊:
影响因子:
--
通讯作者:
Bainbridge R
中科院分区:
文献类型:
--
作者:
Bainbridge R
Rapid shallow landslides are a significant hillslope erosion mechanism and limited understanding of their initiation and development results in persistent risk to infrastructure. Here, we analyse the slope above the strategic A83 Rest and be Thankful road in the west of Scotland. An inventory of 70 landslides (2003–2020) shows three types of shallow landslide, debris flows, creep deformation, and debris falls. Debris flows dominate and account for 5,350 m3(98%) of shallow-landslide source volume across the site. We use novel time-lapse vector tracking to detect and quantify slope instabilities, whilst seismometers demonstrate the potential for live detection and location of debris flows. Using on-slope rainfall data, we show that shallow-landslides are typically triggered by abrupt changes in the rainfall trend, characterised by high-intensity, long duration rainstorms, sometimes part of larger seasonal rainfall changes. We derive empirical antecedent precipitation (>62 mm) and intensity-duration (>10 h) thresholds over which shallow-landslides occur. Analysis shows the new thresholds are more effective at raising hazard alerts than the current management plan. The low-cost sensors provide vital notification of increasing hazard, the initiation of movement, and final failure. This approach offers considerable advances to support operational decision-making for infrastructure threatened by complex slope hazards.
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DOI:
10.1016/j.isprsjprs.2013.04.009
发表时间:
2013-08-01
影响因子:
12.7
作者:
Lague, Dimitri;Brodu, Nicolas;Leroux, Jerome
通讯作者:
Leroux, Jerome
影响因子:
1.4
作者:
F. McMillan;Chris Holt
通讯作者:
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影响因子:
7.4
作者:
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通讯作者:
Jérôme Vergne
影响因子:
2.7
作者:
Florian Zimmermann;B. McArdell;C. Rickli;C. Scheidl
通讯作者:
C. Scheidl
影响因子:
6.7
作者:
M. Winter;N. Kinnear;S. Helman
通讯作者:
S. Helman