The application of airborne LiDAR technology to landslide survey: A case study of Zhangjiawan Village landslides in Three Gorges Reservoir area

doi:10.6046/gtzyyg.2019.01.24

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Abstract

Combined with the positioning and orientation system (POS), the airborne LiDAR system acquires the three dimensional coordinate information of ground objects, and has the capability of fast generation of high-precision digital elevation model (DEM). DEM is a basic map for landslide investigation and monitoring. Its precision can reflect the small ground surface changes directly. The DEM can be used to quantitatively analyze landslide characteristics accurately. There are several advantages of airborne LiDAR technology: it is affected little by weather, it can penetrate the vegetation layer to obtain the ground surface information and its data-processing process is relatively simple. In this paper, the LiDAR technology was applied in Zhangjiawan Village, Zigui County, Hubei Province. The results show that, based on LiDAR technology, landslides can be recognized clearly with slide mountain shadow maps made with high precision DEM and, what is more, quantitative analysis can be carried out to measure landslides characteristics.

Keywords airborne LiDAR technology digital elevation model flightline adjustment landslide monitoring quantitative analysis

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Issue Date: 14 March 2019

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	Lei DU
	Jie CHEN
	Minmin LI
	Xiongwei ZHENG
	Jing LI
	Zihong GAO

Cite this article:

Lei DU,Jie CHEN,Minmin LI, et al. The application of airborne LiDAR technology to landslide survey: A case study of Zhangjiawan Village landslides in Three Gorges Reservoir area[J]. Remote Sensing for Land & Resources, 2019, 31(1): 180-186.

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https://www.gtzyyg.com/EN/10.6046/gtzyyg.2019.01.24 OR https://www.gtzyyg.com/EN/Y2019/V31/I1/180

Fig.1 Comparison of DEM shading maps before and after cloud-point classification

Tab.1 DEM precision evaluation(m)

Fig.2 DOM of Zhangjiawan Village landslide area

Fig.3 Landslide field photo and its DEM shading map of Zhangjiawan Village

Fig.4 Slide mountain shadow series maps of Zhangjiawan Village

Fig.5 Landslide slope map and landslide surface roughness map of Zhangjiawan Village

Fig.6 Landslide elements semivariogram curve of Zhangjiawan Village

Fig.7 Comparison of landslide fractal dimension calculation results of Zhangjiawan Village

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