EGU22-1356, updated on 27 Mar 2022
https://doi.org/10.5194/egusphere-egu22-1356
EGU General Assembly 2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Multi-spatiotemporal landslide mapping for landslide evolutionary investigation

Kushanav Bhuyan1, Hakan Tanyas2, Lorenzo Nava1, Silvia Puliero1, Sansar Raj Meena1,2, Mario Floris1, Filippo Catani1, Cees Van Westen2, and Tanuj Pareek2
Kushanav Bhuyan et al.
  • 1Machine Intelligence and Slope Stability Laboratory, Department of Geosciences, University of Padova, Padova, Italy (kushanav.bhuyan@studenti.unipd.it)
  • 2Faculty of Geo-information Science and Earth Observation (ITC), University of Twente, Enschede, Netherlands

Multi-temporal landslide inventories are crucial for understanding the changing dynamics and states of activity of landslide masses. However, mapping landslides over space and time is challenging as it requires lots of time and resources to delineate landslide bodies for affected areas. With the current advances in artificial intelligence models and acquisition of very high-resolution satellite imageries, the need to map landslides not just spatially, but also temporally, has become evident. Generating multi-spatiotemporal landslide inventories can allow to improve our understanding of evolving landslides and landslide re-activations, addressing the changing susceptibilities, and the associated risks to elements-at-risk. Furthermore, as a result of having multi-temporal inventories, the temporal probability of occurrence of landslides can also be investigated with the help of envelop curves based on variables like rainfall duration, intensity, cumulative rainfall, antecedent rainfall. Therefore, in this endeavour, we have developed a model that generates multi-temporal landslide inventories for some of the most affected landslide regions by using several inventories around the world, for example, in Nepal (Gorkha earthquake of 2015). This study is the first attempt to map landslides over space and time using the state-of-the-art artificial intelligence models and gives a new perspective at mapping landslides through a temporal lens. Subsequently, the modelled outputs are utilised to assess and understand the changing dynamic behaviour of past landslides.   

How to cite: Bhuyan, K., Tanyas, H., Nava, L., Puliero, S., Meena, S. R., Floris, M., Catani, F., Van Westen, C., and Pareek, T.: Multi-spatiotemporal landslide mapping for landslide evolutionary investigation, EGU General Assembly 2022, Vienna, Austria, 23–27 May 2022, EGU22-1356, https://doi.org/10.5194/egusphere-egu22-1356, 2022.

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