A New Method for Assessing Deep Catastrophic Landslide Susceptibility

Uchida, Tatsuo; Yokoyama, Osamu; Suzuki, Ryuji; Tamura, Keiji; Ishizuka, Tadanori

doi:10.13101/ijece.4.32

Cited by 12 publications

(22 citation statements)

References 30 publications

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“…Deep-seated landslides have been reported since 70 years ago (Stini 1941), but the definition and understanding of these landslides remain difficult to clarify. Although typical characteristics and quantifiable definition of deep-seated landslides have been proposed, such as by Agliardi et al (2001) and Uchida et al (2011), it is still extremely difficult to predict where and when a deepseated landslide will occur. The characteristics of rainfall in Taiwan have been gradually changing to heavy rainfall with high intensity or long duration during recent years (Shiu et al 2009).…”

Section: Dam Failure and River Dischargementioning

confidence: 99%

Formation, failure, and consequences of the Xiaolin landslide dam, triggered by extreme rainfall from Typhoon Morakot, Taiwan

Wu¹,

Chen²,

Zhang³

2013

Landslides

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An extreme rainfall event on August 9, 2009, which was close to setting a world record for 48-h accumulated rainfall, induced the Xiaolin deep-seated landslide, which was located in southwestern Taiwan and had volume of 27.6×10 6 m 3 , and caused the formation of a landslide dam. The landslide dam burst in a very short time, and little information remained afterward. We reconstructed the process of formation and failure of the Xiaolin landslide dam and also inferred the area of the impoundment and topographic changes. A 5 × 5-m digital elevation model, the recorded water stage of the Qishan River, and data from field investigation were used for analysis. The spectral magnitude of the seismic signals induced by the Xiaolin landslide and flooding due to failure of the landslide dam were analyzed to estimate the timing of the dam breach and the peak discharge of the subsequent flood. The Xiaolin landslide dam failure resulted from overtopping. We verified the longevity of the Xiaolin landslide dam at about 2h relying on seismic signals and water level records. In addition, the inundated area, volume of the impoundment behind the Xiaolin landslide dam, and peak discharge of the flood were estimated at 92.3ha, 19.5×10 6 m 3 , and 17×10 3 m 3 /s, respectively. The mean velocity of the flood-recession wave front due to the dam blockage was estimated at 28km/h, and the peak flooding velocity after failure of the dam was estimated at 23km/h. The Xiaolin landslide provides an invaluable opportunity for understanding the mechanism of deep-seated landslides and flooding processes following a landslide dam failure.

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Section: Dam Failure and River Dischargementioning

confidence: 99%

Formation, failure, and consequences of the Xiaolin landslide dam, triggered by extreme rainfall from Typhoon Morakot, Taiwan

Wu¹,

Chen²,

Zhang³

2013

Landslides

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“…1 km 2 ) over relatively large areas (ca. hundreds of km 2 ) has been proposed [Tamura et al, 2008;Uchida et al, 2011]. Uchida et al [2011] successfully demonstrated the applicability of this method using data from Mount Wanitsuka, Japan, where deep catastrophic landslides occurred during a typhoon in 2005.…”

Section: Prefacementioning

confidence: 99%

“…hundreds of km 2 ) has been proposed [Tamura et al, 2008;Uchida et al, 2011]. Uchida et al [2011] successfully demonstrated the applicability of this method using data from Mount Wanitsuka, Japan, where deep catastrophic landslides occurred during a typhoon in 2005. Additionally, Takezawa et al [2012] confirmed the applicability of the method in a mountainous area around Mount Kurikoma, Japan, where a number of co-seismic deep-seated rapid landslides were triggered by an earthquake in 2008.…”

Section: Prefacementioning

confidence: 99%

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Applying a Method for Assessing Deep-Seated Rapid Landslide Susceptibility in Jember District, East Java Province, Indonesia

Ueno¹,

Shiiba²,

Yoshida³

et al. 2015

IJECE

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A deep-seated rapid (catastrophic) landslide is a phenomenon that may cause serious damage due to the large amount of sediment movement, such as the formation of a landslide dam and debris flows. In Japan, a method for estimating deep-seated rapid (catastrophic) landslide susceptibilities for many small catchments (ca. 1 km 2 ) over relatively large areas (ca. hundreds of km 2 ) was proposed in 2008. In the present study, we applied the Japanese method to the northern part of Jember, East Java, Indonesia, where a debris flow disaster occurred due to the collapse of a landslide dam formed by a deep-seated rapid (catastrophic) landslide in 2004. Although there were several limitations related to data availability, we successfully assessed susceptibility to deep-seated rapid landslides.

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“…In order to prepare for such landslide disasters, it is necessary to gain an understanding, in advance, of the locations and scales of landslides and deep-seated landslides that can result from earthquakes and heavy rainfall. Therefore, numerous studies on risk evaluation methods for slope failure have been conducted (Khasbaatar et al, 2009;Hayashi et al, 2011;Higaki et al, 2011;Uchida et al, 2011). Landslide and slope failure research is generally performed by conducting topographical and geological reconnaissance and boring…”

Section: Introductionmentioning

confidence: 99%

Use of magnetic surveying in landslide analysis at the boundary between the granite

Sugimoto¹,

Kawasaki

Sakai

2014

Journal of Natural Disaster Science

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A helicopter-borne magnetic survey is conducted at the landslide-prone area of the boundary zone between the Hida belt and the green tuff in southwestern Toyama Prefecture, and the effectiveness of the airborne magnetic survey is considered in relation to its ability to verify the magnetic structure in the slope regions. Analysis using the reduction-to-thepole (RTP) method is applied to airborne magnetic anomaly data in the survey after diurnal correction and removal of the International Geomagnetic Reference Field (IGRF)-7. In addition, the magnetic properties are measured, and x-ray powder diffraction of boring cores drilled in the region of the Funatsu granite is examined. According to the magnetic anomaly distribution using the RTP method, the area of igneous rock distribution shows high magnetic anomaly, and the hydrothermal alteration zone and colluvial deposit area of landslides show low magnetic anomaly. It has become clear through the study of boring cores that pole magnetic anomaly by airborne magnetic survey refl ects the distribution of many magnetization substances in the shallow part. Aeromagnetic surveys are an effi cient method of identifying both the distribution of collapsed soil sediments in the Neogene and areas of high landslide potential in Funatsu granitic rock.

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A New Method for Assessing Deep Catastrophic Landslide Susceptibility

Cited by 12 publications

References 30 publications

Formation, failure, and consequences of the Xiaolin landslide dam, triggered by extreme rainfall from Typhoon Morakot, Taiwan

Formation, failure, and consequences of the Xiaolin landslide dam, triggered by extreme rainfall from Typhoon Morakot, Taiwan

Applying a Method for Assessing Deep-Seated Rapid Landslide Susceptibility in Jember District, East Java Province, Indonesia

Use of magnetic surveying in landslide analysis at the boundary between the granite

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