InSAR-derived predisaster spatio-temporal evolution of a reactivated landslide

He, Kun; Luo, Gang; Xi, Chuanjie; Liu, Bo; Hu, Xiewen; Zhou, Ruichen

doi:10.1007/s10064-024-03661-6

Cited by 2 publications

(1 citation statement)

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“…In addition to contact sensors for the quantification of displacement, in recent decades, the utility of Interferometric SAR (InSAR) to identify, map and monitor landslides has been demonstrated [ 25 ] and, as a consequence, InSAR has become consolidated in the field of geotechnics as a tool for the study of landslides. It is largely used for the study of landslide’s reactivation [ 26 ], for the characterization of precursors and triggering factors [ 27 ], for the comparison between landslide behaviour and rainfall characteristics [ 28 ] and for landslide inventory purposes [ 29 ], among others (for a complete review, see [ 30 ]).…”

Section: Introductionmentioning

confidence: 99%

Instrumental Monitoring of a Slow-Moving Landslide in Piedmont (Northwest Italy) for the Definition of Rainfall Thresholds

Bonasera,

Taboni,

Caselle

et al. 2024

Sensors

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The prediction and prevention of landslide hazard is a challenging topic involving the assessment and quantitative evaluation of several elements: geological and geomorphological setting, rainfalls, and ground motion. This paper presents the multi-approach investigation of the Nevissano landslide (Asti Province, Piedmont, NW Italy). It shows a continuous and slow movement, alongside few paroxysmal events, the last recorded in 2016. The geological and geomorphological models were defined through a field survey. An inventory of the landslide’s movements and rainfall records in the period 2000–2016 was performed, respectively, through archive investigations and the application of “Moving Sum of Daily Rainfall” method, allowing for the definition of rain thresholds for the landslide activation (105 mm and 193 mm, respectively, in 3 and 30 days prior to the event). The displacements over the last 8 years (2016–2023) were monitored through an innovative in-continuum monitoring inclinometric system and Earth Observation (EO) data (i.e., relying on Interferometric Synthetic Aperture Radar, or InSAR data): it gave the opportunity to validate the rainfall thresholds previously defined. This study aims to provide information to public authorities for the appropriate management of the site. Moreover, the proposed workflow could be adopted as a guideline for investigating similar situations.

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