Analysis of a rainfall-triggered landslide at rest and be thankful in Scotland

Brunella Balzano, Alessandro Tarantino, Andrew Ridley

Research output: Contribution to journalArticle

Abstract

Weather and climate are key influences upon the triggering of landslides in Scotland. One of the primary factors influencing the landslide and debris flows occurrence is rainwater infiltration into an initially unsaturated slope. This leads to an increase in both degree of saturation and pore-water pressure and, consequently, to a decrease in the shear strength of the soil, which eventually triggers a landslide event. The A83 trunk road at the Rest and Be Thankful in Scotland is an area prone to risk from landslide and, because of climate change, this risk is going to become higher. An increased frequency of heavier rainfall has been observed in recent years and forecasts for the next decades are not more reassuring. In 2014, the biggest landslide event has occurred at the Rest and Be Thankful Pass. More than 2000 tonnes of landslip debris have been removed in efforts to reopen the route A83. Although the route is now open again, still many are the aspects related to the triggering of such event that have not been clarified yet. The aim of this paper is to address the problem of developing a simple numerical model to analyse rainfalltriggered shallow landslides.
LanguageEnglish
Article number15009
Pages1-6
Number of pages6
JournalE3S Web of Conferences
Volume9
DOIs
Publication statusPublished - 12 Sep 2016

Fingerprint

Landslides
Rain
landslide
rainfall
Debris
rainwater
Infiltration
Climate change
debris flow
Shear strength
shear strength
analysis
Numerical models
porewater
infiltration
saturation
weather
Soils
climate change
climate

Keywords

  • landslides
  • Scotland
  • debris flows
  • rainfall effects
  • hydromechanical models

Cite this

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title = "Analysis of a rainfall-triggered landslide at rest and be thankful in Scotland",
abstract = "Weather and climate are key influences upon the triggering of landslides in Scotland. One of the primary factors influencing the landslide and debris flows occurrence is rainwater infiltration into an initially unsaturated slope. This leads to an increase in both degree of saturation and pore-water pressure and, consequently, to a decrease in the shear strength of the soil, which eventually triggers a landslide event. The A83 trunk road at the Rest and Be Thankful in Scotland is an area prone to risk from landslide and, because of climate change, this risk is going to become higher. An increased frequency of heavier rainfall has been observed in recent years and forecasts for the next decades are not more reassuring. In 2014, the biggest landslide event has occurred at the Rest and Be Thankful Pass. More than 2000 tonnes of landslip debris have been removed in efforts to reopen the route A83. Although the route is now open again, still many are the aspects related to the triggering of such event that have not been clarified yet. The aim of this paper is to address the problem of developing a simple numerical model to analyse rainfalltriggered shallow landslides.",
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Analysis of a rainfall-triggered landslide at rest and be thankful in Scotland. / Balzano, Brunella; Tarantino, Alessandro; Ridley, Andrew.

In: E3S Web of Conferences, Vol. 9, 15009, 12.09.2016, p. 1-6.

Research output: Contribution to journalArticle

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