Site, Coverage & Movement History
Outlines exactly where we’ve assessed (location, coordinates), how far back the data goes (up to 10 years), the number of satellite measurement points used, and the kind of satellite orbits included (ascending/descending).
Land Stability Classification & Movement Trends
Breaks down whether the ground is stable, slowly shifting, or moving rapidly - and in what direction.
Classifies movement into clear categories, and identifies if it’s subsiding or uplifting.
Data Quality & Reliability
Outlines how precise the measurements are, using indicators like RMSE (error margins), consistency across the site, and signal quality.
Provides a simple reliability rating to show how trustworthy the report’s findings are for decision-making.
More Information on our InSAR Technology
What Our Landslide Monitoring Reports Cover
Our satellite-based InSAR reports provide clear, quantified insights into landslide movement using radar data from satellites like Sentinel‑1 (C-band) and historical platforms (Envisat/ERS). Applying Persistent Scatterer (PS‑InSAR) and Small‑Baseline Subset (SBAS) workflows, each report includes:
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Time‑series displacement maps showing slope movement over chosen timeframes
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Velocity trends indicating rate and direction of movement
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Change-point detection highlighting acceleration or deceleration periods
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Line-of-Sight (LOS) displacement values, with approximations of vertical/horizontal motion using multi-pass data
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Overlaid context layers such as terrain, land cover, geology, and rainfall
These deliver a full view of slope behaviour, which are accurate to millimetre levels over months to years.
Technical Key Points
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Data Sources & Methodology
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Sentinel‑1 revisits target areas every 12 days (single-satellite scenario); global data is free. Historical imagery from Envisat/ERS stretches back to the early 2000s
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PS‑InSAR tracks stable reflection points over long periods, while SBAS techniques reduce atmospheric noise and enhance area coverage.
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Measurement Accuracy
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Under ideal conditions, we detect vertical movement to within ±2–5 mm/year. Accuracy can reduce on slopes with dense trees or steep terrain.
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Movement Direction & Velocity
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Data measures along the satellite’s LOS. Combining ascending and descending passes helps approximate vertical and horizontal components.
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Temporal Resolution
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A 12-day revisit enables trend detection over weeks to months. Sudden, rapid slips may not be picked up promptly, but gradual slope movement tends to be reliably captured.
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Environmental Context
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Overlays of rainfall, groundwater, and land use support root-cause insights. Field sensors (GNSS, inclinometers) reinforce and validate critical zones.
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Legal Disclaimer
Our reports provide displacement data and analysis only.
Here is where Land Sure would stop, and a certified Geotech would start:
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Supply no geotechnical engineering advice or design
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Are not licensed geotechnical engineers
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Do not replace a formal geotechnical engineering report required for regulatory, design or construction purposes
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Recommend you engage qualified geotechnical professionals for slope stability evaluation, mitigation suggestions, and certification
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Limit liability to data delivery and reported displacement. We assume no responsibility for field decisions, damages, or costs resulting from report use
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Expect reports to supplement, not substitute, geological, hydrological, and geotechnical studies in comprehensive risk assessments
Touch Base with our Team
Our InSAR landslide reports give you an "early scout" across vast areas; documenting slope shifts and pointing to hotspots. These reports do not serve as a replacement for certified civil engineer investigations. For homeowners and insurers, these reports offer clear evidence and dated histories of slope movement to support decisions. For engineers and developers, they guide fieldwork, save time, and reduce guesswork.
If you'd like to explore how to fit InSAR reporting into your development, insurance, or engineering workflows—or get a sample NZ landslide report, please order it from our team today.
InSAR Satellite Technology Benefits & Key Advantages
Land Sure is powered by Avant AI - a New Zealand based AI software solutions company. We integrate satellite imagery, IoT sensors and machine learning to create better insights for our clients. We work with governments, councils, civil and property planners to deliver both historical data, as well as ongoing monitoring. We can automate our land stability scans, to connect up with email and text alerts for when land movement starts to accelerate.
Residential & Property Development
Precise subsidence and uplift measurements are required to design foundations and manage long-term asset value . InSAR provides millimetre-scale time-series displacement maps across large areas, + early identification of subtle ground movements that traditional surveys may miss.
Layering InSAR-derived deformation mapping, enables both a historic look into the land movement over time, but also set up alerts if any part of your section should start to move.
Exportable geo-referenced reports streamline collaboration between geotech teams, architects and project managers, reducing costly surprises during construction
Civil & Planning
Our Civil and Planning clients use InSAR for real-time infrastructure monitoring, such as bridges, roads and embankments, as not to disrupt operations.
Early detection of deformation hotspots enhances safety and informs maintenance schedules, extending asset lifespans.
Historical InSAR archives reveal long-term land-stability trends, aiding in hazard zoning and urban growth strategies.
Land Sure’s seamless integration into planning workflows will also accelerate approvals and facilitate transparent and fast communication.
Insurance, Legal and Banking
When assessing risk, insurers, legal experts and lenders demand objective, verifiable evidence of ground stability.
Land Sure provides time-stamped InSAR records that support policy under-writing, boundary-dispute resolutions and lending due diligence.
After an event; be it a landslip, earthquake or heavy-rain subsidence, our post-event reporting let you validate claims, allocate liability and manage exposure in days rather than weeks.
Structural, Legal & Insurance RiskS
Provides an evidence-based summary of how the identified ground movement may impact buildings, driveways, utilities, or resale potential.
Flags whether any movement may raise red flags for engineers, banks, insurers, or councils — or require further investigation.
10-Year Trend Analysis & Future Projections
Shows how the ground has moved over time — including any seasonal patterns, sudden shifts, or ongoing trends.
Projects this data forward to give a rough estimate of what could happen in the next 1–5 years based on past trends.
Next Steps & Recommendations
Based on the findings, this section offers practical recommendations. This includes whether further geotechnical advice is needed, if monitoring should continue.
This report is not a replacement for a geotechnical engineer, but a tool to support them.
I would like to purchase a Land Sure Report
Fill in your contact information, one of our team will be in touch within 24 business hours.
From as little as $2 per ㎡
Land Sure uses InSAR Satellite data, to provide a detailed analysis of land in New Zealand.
We can look back 10 years into the past, to get a more thorough view into the stability of your property or area of interest.
Ideal for: Geotech Engineers, Surveyors + Planners, Insurance and prospective property owners.
Ground Stability Safety Score
Ground Movement Analysis
Detailed Subsidence Analysis
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InSAR Satellite Imaging | Land Movement Analysis
Order Your 10 Year Historical Geodata Report
Land Sure uses InSAR Satellite data, to provide a detailed analysis of land in New Zealand. We can look back 10 years into the past, to get a more thorough view into the stability of your property.
Buy Land Movement Report Data + Ongoing Monitoring & Alerts.
How it Works
InSAR Satellite Data Analysis
The Sentinel-1 Satellite, launched by the European Space Agency, has been in low-orbit for the past decade. Every 12 days, this satellite completes a full coverage of the globe.
Local Weather + Geo-Event Data
We connect to multiple weather and geotechnical live datasets via API keys. This data integrates seemlessly to create greater context to your report.
Open-Source Datasets + ML
We connect to open source data from all around the world, to better understand our environment better and refine our Machine Learning prediction models.