Landslide Monitor

InSAR-derived deformation maps detect millimeter-scale ground movements over time, enabling proactive landslide risk assessment and early warning for vulnerable slopes.

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How does it work?

Traditional ground surveys lack the spatial coverage and revisit frequency to capture subtle precursory movements on unstable slopes. InSAR monitoring provides high-resolution, frequent, and wide-area deformation measurements, offering reliable early warning signals to inform risk mitigation.

High Spatial Resolution: InSAR generates deformation maps at sub-kilometer grid spacing, capturing localized movement patterns. This granularity enables pinpointing of unstable zones before they reach critical thresholds.
Millimeter Precision: InSAR detects ground shifts down to millimeter scale, revealing subtle precursors to slope failure. This sensitivity supports timely interventions and targeted monitoring efforts.
Frequent Revisit Times: Satellite constellations deliver regular acquisition cycles, enabling near-real-time tracking of deformation trends. Frequent updates help identify acceleration in ground movement before failure occurs.
Wide-Area Surveillance: InSAR covers broad regions in a single acquisition, allowing simultaneous assessment of multiple sites. This scalability supports regional risk management and prioritization of monitoring resources.
Historical Back-Analysis: Archived SAR data enable retrospective analysis of long-term deformation patterns. These insights inform stability models and help differentiate seasonal shifts from progressive loading.
Integrated Risk Insights: Combining InSAR-derived deformation with rainfall, geology, and infrastructure data yields comprehensive risk maps. This integration enhances decision-making for mitigation strategies and emergency planning.

Frequently asked questions

Have a different question and can’t find the answer you’re looking for? Reach out to our support team by sending us an email and we’ll get back to you as soon as we can.

How does InSAR compare to GNSS for landslide monitoring?: InSAR offers spatially continuous measurements across wide areas, while GNSS provides point-based precision at specific locations. InSAR can monitor many slopes simultaneously, whereas GNSS delivers higher temporal resolution at individual sites.
Why is InSAR popular for ground deformation detection?: Users value InSAR for its combination of high precision, broad coverage, and frequent acquisition cycles. Its non-invasive nature and ability to detect subtle movements across large terrains drive widespread adoption.
What are limitations of InSAR monitoring?: InSAR performance can be degraded by atmospheric disturbances and dense vegetation, which reduce signal coherence. Rapid deformation and steep slopes may also exceed the maximum detectable phase change, requiring complementary data sources.
Are there alternatives to InSAR for slope stability assessment?: Ground-based radars, LiDAR surveys, and GNSS sensor networks are common alternatives for deformation monitoring. Each option involves trade-offs in terms of spatial coverage, temporal resolution, and operational cost compared to satellite-based InSAR.
How frequently can InSAR update deformation maps?: Update frequency depends on the satellite revisit schedule, typically ranging from daily to weekly intervals. Emerging constellations can provide sub-weekly or even daily coverage for near-real-time monitoring requirements.
Can InSAR be used in densely forested areas?: Dense vegetation can scatter radar signals and lower coherence, challenging accurate deformation retrieval. However, using longer-wavelength SAR bands and advanced processing techniques can mitigate some vegetation effects.

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