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Fig. 5 | Geoenvironmental Disasters

Fig. 5

From: Successful emergency evacuation from a catastrophic loess landslide reactivated by the torrential rain in October 2021 in Tianshui, Ganusu, NW China

Fig. 5

Ortho-images illustrating the evolution history of the Zhongzhai landslide. a Ortho-image on 30 April 2010. b Ortho-image on 8 October 2013. c Ortho-image on 9 December 2013. d Ortho-image on 27 July 2014. e Ortho-image on 17 July 2015. f Ortho-image on 26 April 2018. g Ortho-image on 25 April 2019. h Ortho-image on 19 August 2020. i Ortho-image on 26 December 2021. The blue line and red line indicate the landslide boundaries occurred in 2013 and 2021, respectively. The pink line in (h) indicates the crack due to progressive failure

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