Kinematics of a Translational/Rotational Landslide, Central Andes, Northwestern Argentina

Abascal, Liliana del Valle; Bonorino, Gustavo González

doi:10.2113/gseegeosci.12.4.369

Cited by 3 publications

(2 citation statements)

References 4 publications

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“…The landslide body rotates and slides along a sub-circular surface to form a single rotational landslide [7]. Multiple rotational landslides involve sliding along multiple subcircular sliding surfaces in an instant or very short period, or multiple rotational slides gradually occur based on a single rotational landslide [4,32].…”

Section: Evolution Of Multiple Rotational Landslidesmentioning

confidence: 99%

“…Rotational landslides are typically characterized by arc-shaped sliding surfaces, which are deeply buried and large in scale [4,5]. The sliding mechanism of rotational landslides is complex and is particularly characterized by their strong instability and frequent recurrence [6][7][8]. Numerous rotational landslides have developed in Neogene basins, such as the Neogene claystone basins in the northeastern margin of the Qinghai-Tibet Plateau [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

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Topographic Changes, Surface Deformation and Movement Process before, during and after a Rotational Landslide

Qiu

Zhu

et al. 2023

Remote Sensing

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The deformation characteristics and instability patterns of rotational landslides are complicated. Such landslides are large and occur continuously, seriously threatening people’s lives. We used interferometry synthetic aperture radar (InSAR), digital elevation models of difference (DODs), numerical simulations, and other techniques for analyzing the topographic changes, surface deformation and movement process before, during and after a landslide. Based on the high-resolution terrain data before and after the landslide, the topographic changes were analyzed, and the active zone of the landslide was identified. The areas of the topographic changes were mainly located on the main scarp, toe and secondary landslides. The topographic changes were influenced by rainfall and rill erosion. The geomorphologically-guided InSAR interpretation method was applied to explore the displacement pattern. The deformation area in the middle of the landslide coincided with the secondary landslides. A time-series InSAR analysis revealed the dynamic evolution of the deformation before and after the landslide. Based on its evolution, the simulated landslide process included the main landslide and three secondary landslides. Based on the displacement of the longitudinal ground surface profiles, the displacement characteristics and kinematic behavior were summarized and compared with those of a single rotational landslide and multiple rotational landslides. The single rotational landslide had obvious secondary and progressive characteristics, developing into multiple rotational landslides triggered by conditions such as rainfall.

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Section: Evolution Of Multiple Rotational Landslidesmentioning

confidence: 99%