Determining volume of failed soil mass in a landslide from satellite images

B. J.M. Lim; E. C. Leong; K. S. Low

doi:10.1201/b19248-114

Determining volume of failed soil mass in a landslide from satellite images

B. J.M. Lim, E. C. Leong, K. S. Low

Nanyang Technological University

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Knowledge regarding the extent of landslides in terms of its volume is necessary to increase our understanding of its triggering factors and associated impacts. Yet, the volume of landslides is seldom quantified due to impracticalities of in-situ measurements as well as challenges encountered in conventional surveying. Various studies have been conducted to empirically relate volume (i.e. displaced material) of a landslide to its area. However, these empirical relationships may not be accurate and are approximations at best. In this paper, a mathematical explanation of the empirical relationships is provided. The empirical relationships are bounded by the volumes of an ‘idealized’ landslide where the décollement plane is either spherical or elliptical. Using this discovery, an alternative technique is proposed to compute the volume of a landslide from a single satellite image. Finally the technique is illustrated with a published case study.

Original language	English
Title of host publication	Unsaturated Soil Mechanics from Theory to Practice - Proceedings of the 6th Asia-Pacific Conference on Unsaturated Soils
Editors	Zhenghan Chen, Changfu Wei, Dean Sun, Yongfu Xu
Publisher	CRC Press/Balkema
Pages	685-690
Number of pages	6
ISBN (Print)	9781138029217
DOIs	https://doi.org/10.1201/b19248-114
Publication status	Published - 2016
Externally published	Yes
Event	6th Asia-Pacific Conference on Unsaturated Soil Mechanics from Theory to Practice, AP-UNSAT 2015 - Guilin, China Duration: Oct 23 2015 → Oct 26 2015

Publication series

Name	Unsaturated Soil Mechanics from Theory to Practice - Proceedings of the 6th Asia-Pacific Conference on Unsaturated Soils

Conference

Conference	6th Asia-Pacific Conference on Unsaturated Soil Mechanics from Theory to Practice, AP-UNSAT 2015
Country/Territory	China
City	Guilin
Period	10/23/15 → 10/26/15

Bibliographical note

Publisher Copyright:
© 2016 Taylor & Francis Group, London.

ASJC Scopus Subject Areas

Soil Science

Access to Document

10.1201/b19248-114

Cite this

Lim, B. J. M., Leong, E. C., & Low, K. S. (2016). Determining volume of failed soil mass in a landslide from satellite images. In Z. Chen, C. Wei, D. Sun, & Y. Xu (Eds.), Unsaturated Soil Mechanics from Theory to Practice - Proceedings of the 6th Asia-Pacific Conference on Unsaturated Soils (pp. 685-690). (Unsaturated Soil Mechanics from Theory to Practice - Proceedings of the 6th Asia-Pacific Conference on Unsaturated Soils). CRC Press/Balkema. https://doi.org/10.1201/b19248-114

Lim, B. J.M. ; Leong, E. C. ; Low, K. S. / Determining volume of failed soil mass in a landslide from satellite images. Unsaturated Soil Mechanics from Theory to Practice - Proceedings of the 6th Asia-Pacific Conference on Unsaturated Soils. editor / Zhenghan Chen ; Changfu Wei ; Dean Sun ; Yongfu Xu. CRC Press/Balkema, 2016. pp. 685-690 (Unsaturated Soil Mechanics from Theory to Practice - Proceedings of the 6th Asia-Pacific Conference on Unsaturated Soils).

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title = "Determining volume of failed soil mass in a landslide from satellite images",

abstract = "Knowledge regarding the extent of landslides in terms of its volume is necessary to increase our understanding of its triggering factors and associated impacts. Yet, the volume of landslides is seldom quantified due to impracticalities of in-situ measurements as well as challenges encountered in conventional surveying. Various studies have been conducted to empirically relate volume (i.e. displaced material) of a landslide to its area. However, these empirical relationships may not be accurate and are approximations at best. In this paper, a mathematical explanation of the empirical relationships is provided. The empirical relationships are bounded by the volumes of an {\textquoteleft}idealized{\textquoteright} landslide where the d{\'e}collement plane is either spherical or elliptical. Using this discovery, an alternative technique is proposed to compute the volume of a landslide from a single satellite image. Finally the technique is illustrated with a published case study.",

author = "Lim, {B. J.M.} and Leong, {E. C.} and Low, {K. S.}",

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year = "2016",

doi = "10.1201/b19248-114",

language = "English",

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series = "Unsaturated Soil Mechanics from Theory to Practice - Proceedings of the 6th Asia-Pacific Conference on Unsaturated Soils",

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Lim, BJM, Leong, EC & Low, KS 2016, Determining volume of failed soil mass in a landslide from satellite images. in Z Chen, C Wei, D Sun & Y Xu (eds), Unsaturated Soil Mechanics from Theory to Practice - Proceedings of the 6th Asia-Pacific Conference on Unsaturated Soils. Unsaturated Soil Mechanics from Theory to Practice - Proceedings of the 6th Asia-Pacific Conference on Unsaturated Soils, CRC Press/Balkema, pp. 685-690, 6th Asia-Pacific Conference on Unsaturated Soil Mechanics from Theory to Practice, AP-UNSAT 2015, Guilin, China, 10/23/15. https://doi.org/10.1201/b19248-114

Determining volume of failed soil mass in a landslide from satellite images. / Lim, B. J.M.; Leong, E. C.; Low, K. S.
Unsaturated Soil Mechanics from Theory to Practice - Proceedings of the 6th Asia-Pacific Conference on Unsaturated Soils. ed. / Zhenghan Chen; Changfu Wei; Dean Sun; Yongfu Xu. CRC Press/Balkema, 2016. p. 685-690 (Unsaturated Soil Mechanics from Theory to Practice - Proceedings of the 6th Asia-Pacific Conference on Unsaturated Soils).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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Lim BJM, Leong EC, Low KS. Determining volume of failed soil mass in a landslide from satellite images. In Chen Z, Wei C, Sun D, Xu Y, editors, Unsaturated Soil Mechanics from Theory to Practice - Proceedings of the 6th Asia-Pacific Conference on Unsaturated Soils. CRC Press/Balkema. 2016. p. 685-690. (Unsaturated Soil Mechanics from Theory to Practice - Proceedings of the 6th Asia-Pacific Conference on Unsaturated Soils). doi: 10.1201/b19248-114

Determining volume of failed soil mass in a landslide from satellite images

Abstract

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Bibliographical note

ASJC Scopus Subject Areas

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