Comparisons of Dynamic Landslide Models on GIS Platforms
Numerical simulation is one of the methods to assess landslide movement processes, which is beneficial for engineering design and urban planning. With the development of computer technology, GIS has gradually become the mainstream platform for landslide simulation due to data availability and algori...
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MDPI AG
2022-03-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/12/6/3093 |
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| author | Yuming Wu Aohua Tian Hengxing Lan |
| author_facet | Yuming Wu Aohua Tian Hengxing Lan |
| author_sort | Yuming Wu |
| collection | DOAJ |
| description | Numerical simulation is one of the methods to assess landslide movement processes, which is beneficial for engineering design and urban planning. With the development of computer technology, GIS has gradually become the mainstream platform for landslide simulation due to data availability and algorithm integrability. However, the dynamic processes of landslides are complicated, which makes integration difficult on GIS platforms. Some assumptions are applied to simplify these dynamic processes and solve this problem. Generally, there are two main types of numerical models on GIS platforms: models based on the Eulerian description and models based on the Lagrangian description. Case studies show that Eulerian models are suitable for flow-like movement, and Lagrangian models are suitable for discrete rigid bodies movement. Different models face different problems: the Eulerian-based models show numerical diffusion and oscillation, and the Lagrangian-based model needs to consider complicated shear and collision processes. In addition, the 3-D model can describe more details in the <i>z</i>-direction, while the depth-averaged model can obtain a reasonable range of motion, depth, and speed quickly. From the view of numerical simulation, inappropriate models, assumptions, and numerical schemes will produce errors. The landslide type refers to several forms of mass wasting associated with a wide range of ground movements, which guides establishing dynamic models and numerical schemes on GIS platforms and helps us obtain results accurately. |
| first_indexed | 2024-03-09T20:09:10Z |
| format | Article |
| id | doaj.art-e0ccd82fabc145348f7615d4ecf21c01 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-09T20:09:10Z |
| publishDate | 2022-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-e0ccd82fabc145348f7615d4ecf21c012023-11-24T00:23:36ZengMDPI AGApplied Sciences2076-34172022-03-01126309310.3390/app12063093Comparisons of Dynamic Landslide Models on GIS PlatformsYuming Wu0Aohua Tian1Hengxing Lan2State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, ChinaState Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, ChinaState Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, ChinaNumerical simulation is one of the methods to assess landslide movement processes, which is beneficial for engineering design and urban planning. With the development of computer technology, GIS has gradually become the mainstream platform for landslide simulation due to data availability and algorithm integrability. However, the dynamic processes of landslides are complicated, which makes integration difficult on GIS platforms. Some assumptions are applied to simplify these dynamic processes and solve this problem. Generally, there are two main types of numerical models on GIS platforms: models based on the Eulerian description and models based on the Lagrangian description. Case studies show that Eulerian models are suitable for flow-like movement, and Lagrangian models are suitable for discrete rigid bodies movement. Different models face different problems: the Eulerian-based models show numerical diffusion and oscillation, and the Lagrangian-based model needs to consider complicated shear and collision processes. In addition, the 3-D model can describe more details in the <i>z</i>-direction, while the depth-averaged model can obtain a reasonable range of motion, depth, and speed quickly. From the view of numerical simulation, inappropriate models, assumptions, and numerical schemes will produce errors. The landslide type refers to several forms of mass wasting associated with a wide range of ground movements, which guides establishing dynamic models and numerical schemes on GIS platforms and helps us obtain results accurately.https://www.mdpi.com/2076-3417/12/6/3093landslide dynamicslandslide classificationdynamic modelsdepth-averaged modelGIS |
| spellingShingle | Yuming Wu Aohua Tian Hengxing Lan Comparisons of Dynamic Landslide Models on GIS Platforms Applied Sciences landslide dynamics landslide classification dynamic models depth-averaged model GIS |
| title | Comparisons of Dynamic Landslide Models on GIS Platforms |
| title_full | Comparisons of Dynamic Landslide Models on GIS Platforms |
| title_fullStr | Comparisons of Dynamic Landslide Models on GIS Platforms |
| title_full_unstemmed | Comparisons of Dynamic Landslide Models on GIS Platforms |
| title_short | Comparisons of Dynamic Landslide Models on GIS Platforms |
| title_sort | comparisons of dynamic landslide models on gis platforms |
| topic | landslide dynamics landslide classification dynamic models depth-averaged model GIS |
| url | https://www.mdpi.com/2076-3417/12/6/3093 |
| work_keys_str_mv | AT yumingwu comparisonsofdynamiclandslidemodelsongisplatforms AT aohuatian comparisonsofdynamiclandslidemodelsongisplatforms AT hengxinglan comparisonsofdynamiclandslidemodelsongisplatforms |