Landslides and Rainfall Characteristics Analysis in Taipei City during the Typhoon Nari Event

Yu, Fuliang; Chen, Tien-Chien; Lin, Meei-Ling; Chen, Chien-Yuan; Yu, Wen-Hai

doi:10.1007/s11069-005-4661-0

Cited by 39 publications

(23 citation statements)

References 7 publications

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“…Fractures have the potential to become pathways for water infiltration that would cause water pressure buildup at depth. In contrast to the Shiaolin landslide, many shallow landslides occurred when rainfall intensity was increasing or near its peak (Godt et al, 2006;Yu et al, 2006). This difference in terms of landslide timing is attributed to the difference in the effects of water infiltration and pore water pressure buildup.…”

Section: Role Of Rain In This Eventmentioning

confidence: 95%

Catastrophic landslide induced by Typhoon Morakot, Shiaolin, Taiwan

2011

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Typhoon Morakot induced the catastrophic and deadly Shiaolin landslide in southern Taiwan on 9 August 2009, resulting in more than 400 casualties. We undertook a geological and geomorphological investigation with the aim of reconstructing the events leading up to this landslide and to clarify factors that contributed to its development. Cumulative rainfall reached up to 1676.5 mm in about three days under the influence of the typhoon, and the Shiaolin landslide, with a volume of 25 x 10(6) m(3), occurred one day after the peak in rainfall intensity. The landslide occurred on a dip slope overlying late Miocene to early Pliocene sedimentary rocks consisting of silty shale, massive mudstone, and sandstone. It started as a rockslide in the upper third of the landslide area and transformed into a rock avalanche that crossed a series of terraces and displaced or buried the village below. It buried the riverbed of the Chishan River and ran up the opposite slope, creating a landslide dam 60 m high, which was breached about I h and 24 min later, flooding the village. The velocity of the landslide is estimated to have been 20.4 to 33.7 m s(-1) and its apparent friction angle was 14 degrees, which indicates its high mobility. The detachments in the source area consist of combinations of bedding planes and joints or faults. The landslide was preceded by gravitational deformation, which appeared as hummocky landforms before the landslide and as buckle folds exposed after the event. The landslide deposits consist of fragments of mudstone, shale, and sandstone, as well as clayey material at its base. This clayey material. consisting of Wire. chlorite, quartz, feldspar, and calcite, is assumed to have strongly influenced the long, rapid runout. (C) 2010 Elsevier B.V. All rights reserved

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Section: Role Of Rain In This Eventmentioning

confidence: 95%

Catastrophic landslide induced by Typhoon Morakot, Shiaolin, Taiwan

2011

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“…By the continuity equations of the underground water movement, the basic differential equations of two-phase water-air flow in embankment can be deducted from the principle of the mass conservation law, which is detailed as (2) where S a and S w , respectively, are saturations of air and water, and they satisfy the relationship that…”

Section: Flow Model Of Underground Watermentioning

confidence: 99%

“…Rainfall in mountains and hills regions, such as in Southwest China, is often heavy and prolonged; thus, disasters associated with slope instability induced by rainfall usually happen, resulting in severe impacts to the transportation systems, human beings' safety, and wellbeing [1][2][3]. Therefore, it has become a significant and urgent subject to take rainfall into account as a considerable factor in slope stabilizing [4,5].…”

Section: Introductionmentioning

confidence: 99%

Stability Analysis of Road Embankment Slope Subjected to Rainfall Considering Runoff-Unsaturated Seepage and Unsaturated Fluid–Solid Coupling

et al. 2017

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coupling. The failure characteristics of the embankment slope and the numerical simulation results were in excellent agreement. In the end, a sensitivity analysis of the key factors influencing the slope stability subjected to rainfall was performed with emphasis on damage depth as well as infiltration rainfall depth. From the analysis in this paper, it was concluded that the intensity of rainfall, rainfall duration, and long-term strength of soil have most effects on slope stability when subjected to rainfall. These results suggest that the numerical simulation can be used for practical applications.

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“…2008), Spain (Corominas and Moya, 1999), the USA (Campbell, 1975;Whittaker and McShane, 2012), New Zealand (Crozier et al, 1980;Glade, 1998;Crozier, 2005), Taiwan (Yu et al, 2006), the Portuguese island of Madeira (Nguyen et al, 2013) and in Switzerland (Bollinger et al, 2000).…”

Section: P Nicolet Et Al: Shallow Landslide's Stochastic Risk Modelmentioning

confidence: 99%

Shallow landslide's stochastic risk modelling based on the precipitation event of August 2005 in Switzerland: results and implications

Nicolet

Foresti

Caspar

et al. 2013

Nat. Hazards Earth Syst. Sci.

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Abstract. Due to their relatively unpredictable characteristics, shallow landslides represent a risk for human infrastructures. Multiple shallow landslides can be triggered by widespread intense precipitation events. The event of August 2005 in Switzerland is used in order to propose a risk model to predict the expected number of landslides based on the precipitation amounts and lithological units. The spatial distribution of rainfall is characterized by merging data coming from operational weather radars and a dense network of rain gauges with an artificial neural network. Lithologies are grouped into four main units, with similar characteristics. Then, from a landslide inventory containing more than 5000 landslides, a probabilistic relation linking the precipitation amount and the lithology to the number of landslides in a 1 km 2 cell, is derived. In a next step, this relation is used to randomly redistribute the landslides using Monte Carlo simulations. The probability for a landslide to reach a building is assessed using stochastic geometry and the damage cost is assessed from the estimated mean damage cost using an exponential distribution to account for the variability. Although the model reproduces well the number of landslides, the number of affected buildings is underestimated. This seems to result from the human influence on landslide occurrence. Such a model might be useful to characterize the risk resulting from shallow landslides and its variability.

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Landslides and Rainfall Characteristics Analysis in Taipei City during the Typhoon Nari Event

Cited by 39 publications

References 7 publications

Catastrophic landslide induced by Typhoon Morakot, Shiaolin, Taiwan

Catastrophic landslide induced by Typhoon Morakot, Shiaolin, Taiwan

Stability Analysis of Road Embankment Slope Subjected to Rainfall Considering Runoff-Unsaturated Seepage and Unsaturated Fluid–Solid Coupling

Shallow landslide's stochastic risk modelling based on the precipitation event of August 2005 in Switzerland: results and implications

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