A heuristic approach to global landslide susceptibility mapping
Thomas Stanley1,2,3, Dalia B Kirschbaum3
1Universities Space Research Association, Columbia, Maryland, USA.
Natural Hazards (Dordrecht, Netherlands)
|April 19, 2021
Summary
A new global landslide susceptibility map was created using diverse data and a heuristic fuzzy approach. This map aids in disaster planning and global decision support systems.
Area of Science:
- Geosciences
- Environmental Science
- Disaster Management
Background:
- Landslides pose significant global risks to life and property.
- Previous efforts to map landslide susceptibility at continental and global scales have informed current methodologies.
Purpose of the Study:
- To develop a novel global landslide susceptibility map by integrating existing and new datasets.
- To improve disaster planning and decision support systems with enhanced landslide risk information.
Main Methods:
- A heuristic fuzzy approach was employed to combine data on slope, faults, geology, forest loss, and road networks.
- The developed map was validated using the Global Landslide Catalog and local landslide inventories.
Main Results:
- A new global landslide susceptibility map was generated, integrating multiple environmental and anthropogenic factors.
- Comparisons indicate that subjective methods at this scale are largely reproducible, but scale-dependent comparisons require careful consideration.
Conclusions:
- The new global landslide susceptibility map provides a valuable tool for disaster planning and situational awareness.
- The findings highlight the importance of considering local context when comparing landslide susceptibility across different spatial scales.
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