Articles | Volume 22, issue 2
https://doi.org/10.5194/nhess-22-481-2022
https://doi.org/10.5194/nhess-22-481-2022
Research article
 | 
16 Feb 2022
Research article |  | 16 Feb 2022

Automated determination of landslide locations after large trigger events: advantages and disadvantages compared to manual mapping

David G. Milledge, Dino G. Bellugi, Jack Watt, and Alexander L. Densmore

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Cited articles

Aimaiti, Y., Liu, W., Yamazaki, F., and Maruyama, Y.: Earthquake-induced landslide mapping for the 2018 Hokkaido Eastern Iburi earthquake using PALSAR-2 data, Remote Sensing, 11, 2351, https://doi.org/10.3390/rs11202351, 2019. 
Ardizzone, F., Cardinali, M., Carrara, A., Guzzetti, F., and Reichenbach, P.: Impact of mapping errors on the reliability of landslide hazard maps, Nat. Hazards Earth Syst. Sci., 2, 3–14, https://doi.org/10.5194/nhess-2-3-2002, 2002. 
ALDI-landslide-detection: https://dgmilledge.users.earthengine.app/view/aldi-landslide-detection, last access: 4 February 2022. 
Barlow, J., Martin, Y., and Franklin, S. E.: Detecting translational landslide scars using segmentation of Landsat ETM+ and DEM data in the northern Cascade Mountains, British Columbia, Can. J. Remote Sens., 29, 510–517, 2003. 
Barlow, J., Barisin, I., Rosser, N., Petley, D., Densmore, A., and Wright, T.: Seismically-induced mass movements and volumetric fluxes resulting from the 2010 Mw= 7.2 earthquake in the Sierra Cucapah, Mexico, Geomorphology, 230, 138–145, 2015. 
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Short summary
Earthquakes can trigger thousands of landslides, causing severe and widespread damage. Efforts to understand what controls these landslides rely heavily on costly and time-consuming manual mapping from satellite imagery. We developed a new method that automatically detects landslides triggered by earthquakes using thousands of free satellite images. We found that in the majority of cases, it was as skilful at identifying the locations of landslides as the manual maps that we tested it against.
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