/NH* | Compound and Cascading Landslide and Earthquake-Triggered Ground-Failure Events: Rapid Response, Monitoring, and Environmental Vulnerability in 2026
ITS4/NH
Compound and Cascading Landslide and Earthquake-Triggered Ground-Failure Events: Rapid Response, Monitoring, and Environmental Vulnerability in 2026
Convener: Veronica Pazzi | Co-conveners: Federico Raspini, Qingkai Meng, Simone Francesco FornasariECSECS

The year 2026 has been marked by a sequence of destructive landslides and earthquake-triggered ground failures across different geodynamic and climatic settings, offering the opportunity to compare hazard mechanisms, early-warning performance, and civil protection responses on a global scale.
In January (16th and 25th), a destructive landslide hits the South of Italy, compromising roads, building stability, and essential services, and prompting evacuation of 1,500 people. Elsewhere, large earthquakes triggered severe secondary hazards: a Mw 7.8 quake offshore Mindanao, Philippines (8 June); a seismic doublet (Mw 7.2/7.5) in northern Venezuela (24 June) causing slope failures on steep coastal terrain; a Mw ~7.4 quake in Chocó, Colombia (10 August); and a Mw 7.7 quake off Flores, Indonesia (15 August), which blocked the Trans-Flores Highway. On 26 August, a glacier collapse in the Langtang range triggered a debris avalanche and flash flood along the Nepal–China border, destroying infrastructure and leaving over a thousand people missing.
This session aims to bring together scientists, practitioners, and civil protection agencies to discuss detection, characterization, monitoring, and response strategies applicable across these diverse contexts.
We invite contributions addressing, but not limited to:
• Remote sensing analysis (InSAR, optical/radar imagery, LiDAR, UAV) for detection, mapping, and rapid damage assessment);
• Monitoring systems and early warning, including geotechnical instrumentation and seismic detection of slope failures;
• Geomorphological characterization, including susceptibility mapping and controls on landslide reactivation;
• Civil protection and emergency response, including red-zone delimitation, evacuation planning, and cross-border coordination;
• Comparative and multi-hazard perspectives, linking seismically-induced, gravitationally-induced, and cryosphere-related slope failures, and exploring cascading hazard chains.
The session welcomes case studies, methodological advances, and policy-oriented contributions that can inform more effective cascading risks reduction strategies worldwide.