Topographical changes revealed by high-resolution airborne LiDAR data: The 1999 Tsaoling landslide induced by the Chi-Chi earthquake

Rou Fei Chen; Kuo Jen Chang; Jacques Angelier; Yu Chang Chan; Benoît Deffontaines; Chyi Tyi Lee; Ming Lang Lin

doi:10.1016/j.enggeo.2006.09.008

Topographical changes revealed by high-resolution airborne LiDAR data: The 1999 Tsaoling landslide induced by the Chi-Chi earthquake

Rou Fei Chen, Kuo Jen Chang, Jacques Angelier, Yu Chang Chan, Benoît Deffontaines, Chyi Tyi Lee, Ming Lang Lin

Research output: Contribution to journal › Article › peer-review

152 Scopus citations

Abstract

The 1999 Chi-Chi earthquake triggered the catastrophic Tsaoling landslide in central Taiwan. We mapped the landslide area and estimated the landslide volume, using a high-resolution digital elevation model from airborne LiDAR (Light Detection And Ranging), aerial photographs and topographic maps. The comparison between scar and deposit volumes, about 0.126 km³ and 0.150 km³ respectively, suggests a coseismic volume increase of 19% due to decompaction during landsliding. In July 2003, the scar and deposit volumes were about 0.125 km³ and 0.110 km³ respectively. These estimates suggest that 4 years after the event, the volume of landslide debris removed by river erosion was nearly 0.040 km³. These determinations are confirmed by direct comparison between the most accurate topographic models of the post-landslide period, indicating a very high erosion rate at the local scale (0.01 km³/year) for the deposit area of the landslide. Such a large value highlights the importance of landslide processes for erosion and long-term denudation in the Taiwan mountain belt.

Original language	English
Pages (from-to)	160-172
Number of pages	13
Journal	Engineering Geology
Volume	88
Issue number	3-4
DOIs	https://doi.org/10.1016/j.enggeo.2006.09.008
State	Published - 15 Dec 2006

Keywords

Chi-Chi earthquake
LiDAR images
Remote sensing
Surface change
Taiwan
Tsaoling Landslide

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10.1016/j.enggeo.2006.09.008

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title = "Topographical changes revealed by high-resolution airborne LiDAR data: The 1999 Tsaoling landslide induced by the Chi-Chi earthquake",

abstract = "The 1999 Chi-Chi earthquake triggered the catastrophic Tsaoling landslide in central Taiwan. We mapped the landslide area and estimated the landslide volume, using a high-resolution digital elevation model from airborne LiDAR (Light Detection And Ranging), aerial photographs and topographic maps. The comparison between scar and deposit volumes, about 0.126 km3 and 0.150 km3 respectively, suggests a coseismic volume increase of 19% due to decompaction during landsliding. In July 2003, the scar and deposit volumes were about 0.125 km3 and 0.110 km3 respectively. These estimates suggest that 4 years after the event, the volume of landslide debris removed by river erosion was nearly 0.040 km3. These determinations are confirmed by direct comparison between the most accurate topographic models of the post-landslide period, indicating a very high erosion rate at the local scale (0.01 km3/year) for the deposit area of the landslide. Such a large value highlights the importance of landslide processes for erosion and long-term denudation in the Taiwan mountain belt.",

keywords = "Chi-Chi earthquake, LiDAR images, Remote sensing, Surface change, Taiwan, Tsaoling Landslide",

author = "Chen, {Rou Fei} and Chang, {Kuo Jen} and Jacques Angelier and Chan, {Yu Chang} and Beno{\^i}t Deffontaines and Lee, {Chyi Tyi} and Lin, {Ming Lang}",

note = "Funding Information: The LiDAR raw data were provided by the Agricultural and Forestry Aerial Survey Institute of Taiwan. This research was supported by the Taiwan–France co-operation in Earth Sciences (French Institute in Taipei-IFT and National Science Council of Taiwan-NSC), and by the French CNRS (PICS Taiwan). We thank Mr. Yan I-Ho for his help, and Prof. Shih T. Y for supplying the information about airborne LiDAR data. Dr. David Keefer, an anonymous reviewer and guest editors of this special issue, Janusz Wasowski and Vincenzo Del Gaudio, provided constructive comments. ",

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T2 - The 1999 Tsaoling landslide induced by the Chi-Chi earthquake

AU - Chen, Rou Fei

AU - Chang, Kuo Jen

AU - Angelier, Jacques

AU - Chan, Yu Chang

AU - Deffontaines, Benoît

AU - Lee, Chyi Tyi

AU - Lin, Ming Lang

N1 - Funding Information: The LiDAR raw data were provided by the Agricultural and Forestry Aerial Survey Institute of Taiwan. This research was supported by the Taiwan–France co-operation in Earth Sciences (French Institute in Taipei-IFT and National Science Council of Taiwan-NSC), and by the French CNRS (PICS Taiwan). We thank Mr. Yan I-Ho for his help, and Prof. Shih T. Y for supplying the information about airborne LiDAR data. Dr. David Keefer, an anonymous reviewer and guest editors of this special issue, Janusz Wasowski and Vincenzo Del Gaudio, provided constructive comments.

PY - 2006/12/15

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N2 - The 1999 Chi-Chi earthquake triggered the catastrophic Tsaoling landslide in central Taiwan. We mapped the landslide area and estimated the landslide volume, using a high-resolution digital elevation model from airborne LiDAR (Light Detection And Ranging), aerial photographs and topographic maps. The comparison between scar and deposit volumes, about 0.126 km3 and 0.150 km3 respectively, suggests a coseismic volume increase of 19% due to decompaction during landsliding. In July 2003, the scar and deposit volumes were about 0.125 km3 and 0.110 km3 respectively. These estimates suggest that 4 years after the event, the volume of landslide debris removed by river erosion was nearly 0.040 km3. These determinations are confirmed by direct comparison between the most accurate topographic models of the post-landslide period, indicating a very high erosion rate at the local scale (0.01 km3/year) for the deposit area of the landslide. Such a large value highlights the importance of landslide processes for erosion and long-term denudation in the Taiwan mountain belt.

AB - The 1999 Chi-Chi earthquake triggered the catastrophic Tsaoling landslide in central Taiwan. We mapped the landslide area and estimated the landslide volume, using a high-resolution digital elevation model from airborne LiDAR (Light Detection And Ranging), aerial photographs and topographic maps. The comparison between scar and deposit volumes, about 0.126 km3 and 0.150 km3 respectively, suggests a coseismic volume increase of 19% due to decompaction during landsliding. In July 2003, the scar and deposit volumes were about 0.125 km3 and 0.110 km3 respectively. These estimates suggest that 4 years after the event, the volume of landslide debris removed by river erosion was nearly 0.040 km3. These determinations are confirmed by direct comparison between the most accurate topographic models of the post-landslide period, indicating a very high erosion rate at the local scale (0.01 km3/year) for the deposit area of the landslide. Such a large value highlights the importance of landslide processes for erosion and long-term denudation in the Taiwan mountain belt.

KW - Chi-Chi earthquake

KW - LiDAR images

KW - Remote sensing

KW - Surface change

KW - Taiwan

KW - Tsaoling Landslide

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JO - Engineering Geology

JF - Engineering Geology

IS - 3-4

ER -

Topographical changes revealed by high-resolution airborne LiDAR data: The 1999 Tsaoling landslide induced by the Chi-Chi earthquake

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Keywords

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