Landslides induced by the 2008 Wenchuan earthquake, Sichuan, China

Chigira, Masahiro; Wu, Xiyong; Isobe, Takashi; Wang, Gonghui

doi:10.1016/j.geomorph.2010.01.003

Cited by 326 publications

(134 citation statements)

References 17 publications

(20 reference statements)

Supporting

Mentioning

131

Contrasting

Unclassified

Order By: Relevance

“…A detailed, comprehensive, and accurate earthquake-triggered landslide inventory is an essential part of improving the understanding of seismic landslide hazard analysis (e.g., Keefer 2002;Harp et al 2011a;Guzzetti et al 2012). After the 2008 Wenchuan earthquake, some landslide inventories were compiled (e.g., Dai et al 2011;Xu et al 2009a;Gorum et al 2011;Huang and Li 2009;Parker et al 2011;Chigira et al 2010;Yin et al 2010a;Qi et al 2010;Li et al 2009;Han et al 2009;Di et al 2010;Chen et al 2009;Ren and Lin 2010;Zhang et al 2010), and correlations of landslide occurrence with geologic and geomorphologic conditions as well as seismic parameters were constructed. However, almost all of the inventories are either incomplete or only record landslide locations; no landslide inventories are comprehensive considering the following seismic landslide mapping criteria: (1) coverage of the entire area affected by landslides, (2) inclusion of all landslides down to a small enough scale, and (3) depiction of landslides as polygons rather than points (Harp et al 2011a).…”

Section: Introductionmentioning

confidence: 99%

Three (nearly) complete inventories of landslides triggered by the May 12, 2008 Wenchuan Mw 7.9 earthquake of China and their spatial distribution statistical analysis

et al. 2013

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Three (nearly) complete inventories of landslides triggered by the May 12, 2008 Wenchuan Mw 7.9 earthquake of China and their spatial distribution statistical analysis

et al. 2013

View full text Add to dashboard Cite

“…The earthquake caused a colossal fault rupture with a distance of approximately 270 km (168 mi) and triggered enormous landslides; it was the worst mountain disaster in the 20th and 21st centuries (Chigira et al 2010). After the earthquake, investigations were conducted using Beijing No.…”

Section: Introductionmentioning

confidence: 99%

Effects of different types of vegetation recovery on runoff and soil erosion on a Wenchuan earthquake-triggered landslide, China

Fusun¹,

Jinniu²,

Lü³

et al. 2013

Journal of Soil and Water Conservation

View full text Add to dashboard Cite

Abstract:In order to find suitable vegetation types for wider earthquake-triggered landslide rehabilitation in the eastern Longmenshan, we chose six vegetation types, which included three artificial restoration vegetation types (shrub Paeonia decomposita, deciduous tree Betula albo-sinensis, and evergreen tree Cryptomeria fortunei), two natural restoration vegetation types (middle and high coverage of grasses), and one residual vegetation. Soil quality, runoff, and soil loss were evaluated for the six vegetation types. We found that high coverage of grass prevented surface runoff and soil erosion more effectively than other vegetation types, and the deciduous tree and shrub were more suitable for soil quality recovery than the evergreen tree after the landslide. Among the three artificially planted vegetation types, the roots of the deciduous tree had stronger expansion ability than those of the shrub and evergreen tree. Our results indicated that high coverage of grass and deciduous trees could complement each other to achieve a good restoring effect, which would not only help reduce surface runoff and soil erosion but also facilitate the formation of fertile islands and enhance the stability of subsurface soils. Therefore, the two vegetation types could be used to form an effective vegetation restoration pattern for wider earthquake-triggered landslide rehabilitation in this region.Key words: earthquake-triggered landslide-fertile island-runoff-soil erosion-soil quality-vegetation type On May 12, 2008, a catastrophic earthquake with a magnitude of Mw 8 and a focal depth of 19 km (11 mi) occurred at the Wenchuan area of the Longmenshan fault in Sichuan Province, China. The earthquake caused a colossal fault rupture with a distance of approximately 270 km (168 mi) and triggered enormous landslides; it was the worst mountain disaster in the 20th and 21st centuries (Chigira et al. 2010). After the earthquake, investigations were conducted using Beijing No. 1 and IKONOS earth observation satellite images with ground resolution of 32 m (105 ft) and 1 m (3 ft), respectively (Di 2008). The total area of landslides induced by this earthquake was 2,260 km 2 (873 mi 2 ), which was far larger than that of recent earthquakes in mountainous areas, such as the Chi-Chi earthquake in 1999 that occurred in central Taiwan (Lin et al. 2006), the Mid-Niigata Prefecture earthquake in 2004 that occurred in northwest Japan (Chigira and Yagi 2005), and the Kashmir earthquake in 2005 that occurred in northern Pakistan (Sato et al. 2007).The earthquake-triggered landslides changed green vegetation into naked rock and bare soil. The absence of a thick soil layer discouraged the percolation of rainfall, facilitated flow over the slopes as runoff, and increased the possibility of severe soil erosion when intense prolonged rainfall occurred. A preliminary estimation of soil erosion in landslides resulting from the earthquake was about 55.86 × 10 8 t (61.58 × 10 8 tn) (Chen et al. 2009). In order to reduce soil erosion and protect the enviro...

show abstract

“…Other landslides occurred in the middle of mountain slopes or near the mountaintops where the gradient is relatively steeper. These slopes corresponded to inner gorges or valleys [Kelsey, 1988;Chigira et al, 2010]. The presence of many main roads along the Minjiang Valley may explain why nearly half of the landslides occurred there.…”

Section: Resultsmentioning

confidence: 99%

Assessment of Regional Shallow Landslide Stability Based on Airborne Laser Scanning Data in the Yingxiu Area of Sichuan Province (China)

Liu

Lü

et al. 2016

European Journal of Remote Sensing

View full text Add to dashboard Cite

This study focuses on analyzing the slope stabilities in a landslide-prone area of Yingxiu Town, Sichuan Province (China). Airborne Laser Scanning (ALS) data were acquired to derive a Digital Elevation Model (DEM) with sufficient accuracy and resolution, as an input for the regional landslide stability analysis. The one-dimensional hydrological model -Stability Index Map (SINMAP), functioning with topographic data, geological settings, and rainfall conditions, was used as a simplified model for slope stability mapping. In this study, the investigated region was classified into six stability levels, and data reliability was subsequently checked with reference to recent landslide inventories. Several experiments have shown that the quality of ALS data played a key-role in the slope stability inside the SINMAP model regarding the point cloud density and the random error. Higher point cloud density may construct higher precision of DEM, however, it may also produce more noises. Although with these uncertainties, using ALS data and its derived high precision DEM, the physically-based SINMAP model is expected to provide a solid basis for further landslide susceptibility mapping at regional scale.

show abstract

Landslides induced by the 2008 Wenchuan earthquake, Sichuan, China

Cited by 326 publications

References 17 publications

Three (nearly) complete inventories of landslides triggered by the May 12, 2008 Wenchuan Mw 7.9 earthquake of China and their spatial distribution statistical analysis

Three (nearly) complete inventories of landslides triggered by the May 12, 2008 Wenchuan Mw 7.9 earthquake of China and their spatial distribution statistical analysis

Effects of different types of vegetation recovery on runoff and soil erosion on a Wenchuan earthquake-triggered landslide, China

Assessment of Regional Shallow Landslide Stability Based on Airborne Laser Scanning Data in the Yingxiu Area of Sichuan Province (China)

Contact Info

Product

Resources

About