Calculation of the Coseismic Landslide Volume Using DEMs: An Example from the Yingxiu Area, Wenchuan, Sichuan, China
Volume calculation is important for quantifying the erosion driven by coseismic landslides in geomorphology. With the advent of digital elevation models (DEMs), quantifying features of landslide bodies have become possible, permitting to calculate the landslide volume in terms of elevation changes....
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Wiley
2021-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2021/6646709 |
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| author | Xiaoli Chen Yijian Chuan Yankun Wei |
| author_facet | Xiaoli Chen Yijian Chuan Yankun Wei |
| author_sort | Xiaoli Chen |
| collection | DOAJ |
| description | Volume calculation is important for quantifying the erosion driven by coseismic landslides in geomorphology. With the advent of digital elevation models (DEMs), quantifying features of landslide bodies have become possible, permitting to calculate the landslide volume in terms of elevation changes. To further test this approach, this work calculates the volume of landslides near the epicenter of the 2008 Mw 7.9 Wenchuan earthquake in the Yingxiu region, Sichuan, China, by comparing pre- and postearthquake DEMs. Results suggest that effective application of this method needs to consider the DEM resolution and eliminates background errors of individual landslides. The volume of coseismic landslides calculated by the proposed method may represent a minimum value compared to that from the existing empirical V-A formulas. Considering that it is difficult to quantify the coseismic landslide volume throughout in a broad region, this method can be applied to the preliminary stage of characterizing coseismic landslides quantitatively for some key localities of the affected area of major earthquakes. |
| format | Article |
| id | doaj-art-e35ea0e79c894d2c8a4c32d24c1c9032 |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-e35ea0e79c894d2c8a4c32d24c1c90322025-02-03T01:28:31ZengWileyAdvances in Civil Engineering1687-80861687-80942021-01-01202110.1155/2021/66467096646709Calculation of the Coseismic Landslide Volume Using DEMs: An Example from the Yingxiu Area, Wenchuan, Sichuan, ChinaXiaoli Chen0Yijian Chuan1Yankun Wei2Key Laboratory of Seismic and Volcanic Hazards China Earthquake Administration, Institute of Geology, China Earthquake Administration, Beijing 100029, ChinaSchool of Mathematical Sciences, Peking University, Beijing 100871, ChinaKey Laboratory of Seismic and Volcanic Hazards China Earthquake Administration, Institute of Geology, China Earthquake Administration, Beijing 100029, ChinaVolume calculation is important for quantifying the erosion driven by coseismic landslides in geomorphology. With the advent of digital elevation models (DEMs), quantifying features of landslide bodies have become possible, permitting to calculate the landslide volume in terms of elevation changes. To further test this approach, this work calculates the volume of landslides near the epicenter of the 2008 Mw 7.9 Wenchuan earthquake in the Yingxiu region, Sichuan, China, by comparing pre- and postearthquake DEMs. Results suggest that effective application of this method needs to consider the DEM resolution and eliminates background errors of individual landslides. The volume of coseismic landslides calculated by the proposed method may represent a minimum value compared to that from the existing empirical V-A formulas. Considering that it is difficult to quantify the coseismic landslide volume throughout in a broad region, this method can be applied to the preliminary stage of characterizing coseismic landslides quantitatively for some key localities of the affected area of major earthquakes.http://dx.doi.org/10.1155/2021/6646709 |
| spellingShingle | Xiaoli Chen Yijian Chuan Yankun Wei Calculation of the Coseismic Landslide Volume Using DEMs: An Example from the Yingxiu Area, Wenchuan, Sichuan, China Advances in Civil Engineering |
| title | Calculation of the Coseismic Landslide Volume Using DEMs: An Example from the Yingxiu Area, Wenchuan, Sichuan, China |
| title_full | Calculation of the Coseismic Landslide Volume Using DEMs: An Example from the Yingxiu Area, Wenchuan, Sichuan, China |
| title_fullStr | Calculation of the Coseismic Landslide Volume Using DEMs: An Example from the Yingxiu Area, Wenchuan, Sichuan, China |
| title_full_unstemmed | Calculation of the Coseismic Landslide Volume Using DEMs: An Example from the Yingxiu Area, Wenchuan, Sichuan, China |
| title_short | Calculation of the Coseismic Landslide Volume Using DEMs: An Example from the Yingxiu Area, Wenchuan, Sichuan, China |
| title_sort | calculation of the coseismic landslide volume using dems an example from the yingxiu area wenchuan sichuan china |
| url | http://dx.doi.org/10.1155/2021/6646709 |
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