Real-Time Landslide Warning During Heavy Rainfall

Keefer, Donald A.; Wilson, Raymond C.; Mark, Robert K.; Brabb, Earl E.; Brown, William M.; Ellen, Stephen D.; Harp, Edwin L.; Wieczorek, Gerald F.; Alger, Christopher S.; Zatkin, Robert S.

doi:10.1126/science.238.4829.921

Cited by 470 publications

(231 citation statements)

References 3 publications

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“…Several studies have also found that peak rainfall intensity and the initiation of mass movements are often concurrent (Aleotti 2004;Chien-Yuan et al 2005;Guzzetti et al 2007Guzzetti et al , 2008Dahal and Hasegawa 2008;Saito et al 2010aSaito et al , 2010b. Although antecedent rainfall also plays an important role in the initiation of mass movement (Kim et al 1992;Glade 1997;Crozier 1999;Glade et al 2000;Guzzetti et al 2007Guzzetti et al , 2008Dahal and Hasegawa 2008), intensity-duration (I-D) thresholds and/or the peak rainfall intensity are often used to predict mass movements and warn the appropriate authorities of potential mass movement hazards (Onodera et al 1974;Keefer et al 1987;Aleotti 2004;Hong et al 2005;Cannon et al 2008;Coe et al 2008;Dahal and Hasegawa 2008;Guzzetti et al 2008).…”

Section: Introductionmentioning

confidence: 99%

Rainfall intensity–duration conditions for mass movements in Taiwan

Chen

Saitô

Oguchi

2015

Prog. in Earth and Planet. Sci.

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Mass movements caused by rainfall events in Taiwan are analyzed during a 7-year period from 2006 to 2012. Data from the Taiwan Soil and Water Conservation Bureau reports were compiled for 263 mass movement events, including 156 landslides, 91 debris flows, and 16 events with both landslides and debris flows. Rainfall totals for each site location were obtained from interpolated rain gauge data. The rainfall intensity-duration (I-D) relationship was examined to establish a rainfall threshold for mass movements using random sampling: I = 18.10(±2.67)D −0.17(±0.04) , where I is mean rainfall intensity (mm/h) and D is the time (h) between the beginning of a rainfall event and the resulting mass movement. Significant differences were found between rainfall intensities and thresholds for landslides and debris flows. For short-duration rainfall events, higher mean rainfall intensities were required to trigger debris flows. In contrast, for long-duration rainfall events, similar mean rainfall intensities triggered both landslides and debris flows. Mean rainfall intensity was rescaled by mean annual precipitation (MAP) to define a new threshold: I MAP = 0.0060(±0.0009)D −0.17(±0.04) , where I MAP is rescaled rainfall intensity and MAP is the minimum for mountainous areas in Taiwan (3000 mm). Although the I-D threshold for Taiwan is high, the I MAP -D threshold for Taiwan tends to be low relative to other areas around the world. Our results indicate that Taiwan is highly prone to rainfall-induced mass movements. This study also shows that most mass movements occur in high rainfall-intensity periods, but some events occur before or after the rainfall peak. Both antecedent and peak rainfall play important roles in triggering landslides, whereas debris flow occurrence is more related to peak rainfall than antecedent rainfall.

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Section: Introductionmentioning

confidence: 99%

Rainfall intensity–duration conditions for mass movements in Taiwan

Chen

Saitô

Oguchi

2015

Prog. in Earth and Planet. Sci.

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“…To study storm event-induced landslides on a regional scale, a deterministic physical-based method is commonly used which requires the employment of an infinite-slope model and a hydrological model (Okimura and Ichikawa, 1985;Dietrich et al, 1986Dietrich et al, , 1995Keefer et al, 1987; Correspondence to: C.-T. Lee (ct@ncu.edu.tw) and Dietrich, 1994;Wu and Sidle, 1995;Montgomery et al, 1998;Terlien, 1998;Crozer, 1999;Polemic and Sdao, 1999;Iverson, 2000;Borga et al, 2002;Wilkinson et al, 2002;Crosta and Frattini, 2003;Malet et al, 2005;Baum et al, 2005;Salciarini et al, 2006;Claessens et al, 2007aClaessens et al, , 2007bSchmidt et al, 2008). This approach requires the strength parameters, failure depth and soil conductibility for every point in the limit-equilibrium slope stability calculation, a requirement which can cause serious problems in terms of acquisition and control of spatial variability of the variables (Hutchinson, 1995;Guzzetti et al, 1999).…”

Section: Introductionmentioning

confidence: 99%

Statistical approach to storm event-induced landslides susceptibility

Lee

Huang

Lee

et al. 2008

Nat. Hazards Earth Syst. Sci.

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Abstract. For the interpretation of the storm event-induced landslide distribution for an area, deterministic methods are frequently used, while a region's landslide susceptibility is commonly predicted via a statistical approach based upon multi-temporal landslide inventories and environmental factors. In this study we try to use an event-based landslide inventory, a set of environmental variables and a triggering factor to build a susceptibility model for a region which is solved using a multivariate statistical method. Data for shallow landslides triggered by the 2002 typhoon, Toraji, in central western Taiwan, are selected for training the susceptibility model. The maximum rainfall intensity of the storm event is found to be an effective triggering factor affecting the landslide distribution and this is used in the model. The model is built for the Kuohsing region and validated using data from the neighboring Tungshih area and a subsequent storm event -the 2004 typhoon, Mindulle, which affected both the Kuohsing and the Tungshih areas. The results show that we can accurately interpret the landslide distribution in the study area and predict the occurrence of landslides in the neighboring region in a subsequent typhoon event. The advantage of this statistical method is that neither hydrological data, strength data, failure depth, nor a long-period landslide inventory is needed as input.

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“…2) The sediment deposit pond constructed in regulatory works Phase II is silted up now; the capacity of this area is about 4600 m 3 . In addition, the slit sabo dam in the upstream area has the ability of sediment material accumulated, which can intercept and reduce the sediment material flow to downstream area.…”

Section: Resultsmentioning

confidence: 99%

The Suitability of Typhoon Disaster Reconstruction Work Planning—A Case of Meizuolyu Stream in Taitung County

Chen¹,

Shu²,

Dai³

et al. 2015

ENG

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Due to effects of succession typhoons and heavy rainfall, central government often invests the funds within shortest time of contingency promptly after disaster occurring to handle the planning and design project of taking precautions against natural disaster. Because the time limit of design project operating so generally were planned without many detail investigations, it was necessary to probe into the project effect and reconstruction security behind constructed. In this study, we choose the Meizuolyu stream watershed in Taitung County of eastern Taiwan as the research area to realize the situation and effect of setting up the control work reconstructions by inspecting, surveying and according to hydrology analysis and topography measured, and combined to carry on hydrology mathematical calculations. We adopted HEC-RAS software to make hydrology mathematical calculations, used the result to examine whether the position of each construction was proper, and finally submitted the complete of mend suggestion. The study concluded that no matter how urgent governance was, application of appropriate scientific tools to checklist designed could avoid the mistakes of the generation.

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Real-Time Landslide Warning During Heavy Rainfall

Cited by 470 publications

References 3 publications

Rainfall intensity–duration conditions for mass movements in Taiwan

Rainfall intensity–duration conditions for mass movements in Taiwan

Statistical approach to storm event-induced landslides susceptibility

The Suitability of Typhoon Disaster Reconstruction Work Planning—A Case of Meizuolyu Stream in Taitung County

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