Reactivation of giant Jiangdingya ancient landslide in Zhouqu County, Gansu Province, China

On 12 July 2018, the giant Jiangdingya ancient landslide reactivated and blocked the Bailongjiang River in Nanyu Town, Gansu Province, China. The ancient landslide was ca. 4.1~4.9 × 10 7  m 3 , and the 2018 reactivated landslide was ca. 4.8~5.5 × 10 6  m 3 , with the characteristics of a deep-seated...

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Bibliographic Details
Published in:Landslides 2020, Vol.17 (1), p.179-190
Main Authors: Guo, Changbao, Zhang, Yongshuang, Li, Xue, Ren, Sanshao, Yang, Zhihua, Wu, Ruian, Jin, Jijun
Format: Article
Language:English
Subjects:
Activation
Agriculture
Civil Engineering
Earth and Environmental Science
Earth Sciences
Field investigations
Geography
Geological structures
Landslides
Landslides & mudslides
Lithology
Natural Hazards
Quaternary
Recent Landslides
Remote sensing
Rivers
Tectonics
Uplift
Valleys
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Summary:On 12 July 2018, the giant Jiangdingya ancient landslide reactivated and blocked the Bailongjiang River in Nanyu Town, Gansu Province, China. The ancient landslide was ca. 4.1~4.9 × 10 7  m 3 , and the 2018 reactivated landslide was ca. 4.8~5.5 × 10 6  m 3 , with the characteristics of a deep-seated retrogressive landslide. The terrain and geological structure of the landslide area are very complicated with alpine valleys and high gradient rivers, and the ancient landslide had maturely developed. The Pingding-Huama fault, which has been active since the late Quaternary, passed through the landslide region. Because of the active fault and tectonic uplift, the lithology is deeply fragmented. Based on the remote sensing interpretation and field investigation, development characteristics and reactivation mechanism of the Jiangdingya ancient landslide are described.
ISSN:1612-510X
1612-5118
DOI:10.1007/s10346-019-01266-9