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NV5 Geospatial Blog

Each month, NV5 Geospatial posts new blog content across a variety of categories. Browse our latest posts below to learn about important geospatial information or use the search bar to find a specific topic or author. Stay informed of the latest blog posts, events, and technologies by joining our email list!



Mapping Earthquake Deformation in Taiwan With ENVI

Mapping Earthquake Deformation in Taiwan With ENVI

12/15/2025

Unlocking Critical Insights With ENVI® Tools Taiwan sits at the junction of major tectonic plates and regularly experiences powerful earthquakes. Understanding how the ground moves during these events is essential for disaster preparedness, public safety, and building community resilience. But traditional approaches like field... Read More >

Comparing Amplitude and Coherence Time Series With ICEYE US GTR Data and ENVI SARscape

Comparing Amplitude and Coherence Time Series With ICEYE US GTR Data and ENVI SARscape

12/3/2025

Large commercial SAR satellite constellations have opened a new era for persistent Earth monitoring, giving analysts the ability to move beyond simple two-image comparisons into robust time series analysis. By acquiring SAR data with near-identical geometry every 24 hours, Ground Track Repeat (GTR) missions minimize geometric decorrelation,... Read More >

Empowering D&I Analysts to Maximize the Value of SAR

Empowering D&I Analysts to Maximize the Value of SAR

12/1/2025

Defense and intelligence (D&I) analysts rely on high-resolution imagery with frequent revisit times to effectively monitor operational areas. While optical imagery is valuable, it faces limitations from cloud cover, smoke, and in some cases, infrequent revisit times. These challenges can hinder timely and accurate data collection and... Read More >

Easily Share Workflows With the Analytics Repository

Easily Share Workflows With the Analytics Repository

10/27/2025

With the recent release of ENVI® 6.2 and the Analytics Repository, it’s now easier than ever to create and share image processing workflows across your organization. With that in mind, we wrote this blog to: Introduce the Analytics Repository Describe how you can use ENVI’s interactive workflows to... Read More >

Deploy, Share, Repeat: AI Meets the Analytics Repository

Deploy, Share, Repeat: AI Meets the Analytics Repository

10/13/2025

The upcoming release of ENVI® Deep Learning 4.0 makes it easier than ever to import, deploy, and share AI models, including industry-standard ONNX models, using the integrated Analytics Repository. Whether you're building deep learning models in PyTorch, TensorFlow, or using ENVI’s native model creation tools, ENVI... Read More >

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Sentinel-1 SAR Images Show Buildup of Marine Traffic at Suez Canal

Megan Gallagher

Marine traffic has come to a standstill in Egypt’s Suez Canal, one of the busiest and most important waterways in the world. The Ever Given, a 224,000 ton vessel that is as long as the Empire State Building, ran aground on March 23, 2021 after being caught in 40-knot winds and a sandstorm that caused poor visibility. Currently eight tugboats are working to free the large container ship.

The Sentinel-1 series of images above gives a clear idea of how the disruption of one of the main marine communication lines can lead to significant economic problems.

The images above were captured by the Sentinel-1  sensors (data courtesy EU/ESA) and processed using ENVI® SARscape®. The ability to observe theearth in any atmospheric condition as well as to shoot the same geographical area with the high temporal frequency, provided by the Sentinel-1 A and B sensors, not only allows us to capture the event in near-real time, but also to observe its evolution. These images show normal traffic in the Canal prior to the blockage, as well as the ever- increasing traffic jam to access the passageway that accounts for approximately 30 percent of container ship traffic globally each day.

Using ENVI SARscape and ENVI SARscape Analytics, ships can be distinguished on water due to their signal response with SAR data. SAR show ships as very bright points and areas as compared to the dark background of water. This is because of how the energy gets reflected. With this analysis, we can easily detect, count and track ships. In this case, we can see just how many ships are backed up waiting for passage through the Suez Canal. With Sentinel-1 15m ground range data we can even see the orientation of the Ever Given as it is lodged in the canal. 

Data processed by sarmap SA.

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