Pre-event InSAR slope deformation velocity and displacement time series — COMET LiCSAR Sentinel-1 Geodesy Portal
- Outcome
- Completed
- Search date
- Source
- Centre for Observation and Modelling of Earthquakes, Volcanoes and Tectonics (COMET)
- Reference
- RUN-20260915-063
- Aim
- Catalog multi-year interferometric SAR (InSAR) ground velocity fields and line-of-sight (LOS) displacement time series to evaluate precursory slope creep prior to the August 2026 failure.
- Source and interface
- Centre for Observation and Modelling of Earthquakes, Volcanoes and Tectonics (COMET) — COMET LiCSAR Geodesy Portal & CEDA Archive
- Search method
- Query COMET LiCSAR portal for Sentinel-1 Ascending Frame 085A_05315_131313 and Descending Frame 019D_05120_131313 covering northern Rasuwa and Gyirong. Retrieve calibrated cumulative displacement time series and line-of-sight mean velocity rasters.
- Criteria
Criterion Sentinel-1 InSAR processing (LiCSAR/LiCSBAS). Frames covering Trishuli, Langtang, and Gyirong valleys (2019-2026). - Coverage
- Multi-year millimetric surface deformation rates, identifying slow-moving rock slopes and pre-failure slope acceleration along the gorge.
- Stopping rule
- Exhaust processed LiCSAR frame deliverables overlapping the hazard corridor.
- Result
1 geodetic InSAR deformation resource recovered across 2 assets: COMET LiCSAR Ascending and Descending frame LOS velocity grids and cumulative displacement time series.
Resource links below show the completed assessment outcomes. The search result above records discovery at the search date.
COMET LiCSAR Sentinel-1 Line-of-Sight InSAR Velocity Field and Time Series (Frames 085A & 019D) — Excluded