Displacement map layers docs

markdown-docs/vertex/displacement.en.md

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+# Displacement Tool
+The OPERA Sentinel-1 Displacement Products are high-quality Interferometric Synthetic Aperture Radar (InSAR)-derived displacement data with reduced decorrelation noise using a hybrid Persistent Scatterer (PS) and Distributed Scatterer (DS) time series processing approach. These products provide information on anthropogenic and natural movements of the Earth's surface, such as subsidence, tectonics, and landslides. The products will cover North America and be back-processed through the start of the Sentinel-1 mission. New products will be generated as Sentinel-1 data becomes available.
+
+The Displacement Tool provides the ability to visualize and interact with these products. 
+
+## Map Layers
+There are additional map layers available. In the top left corner of the map, you may click the checkbox to select your desired map layer.
+Descriptions of each layer are below.
+
+### Cumulative Deformation
+This layer is based on shortwave displacement.
+There are separate Ascending and Descending variants, and the layer will update to display the correct direction based on your search filters.
+
+### Cumulative Velocity
+This is a derived layer based on the cumulative deformation layer from the displacement products.
+There are separate Ascending and Descending variants, and the layer will update to display the correct direction based on your search filters.
+
+### Rollout
+This layer provides color-coded priority for Displacement Products creation by region.
+Regions are prioritized 1 through 3, with 1 being the highest processing priority.
+Note that some sub-regions may be de-prioritized based on snow cover, vegetation, or other factors.
+
+## Further Reading  
+[Displacement Products Roadmap](https://storymaps.arcgis.com/stories/9356add046654d719fcc20566fc1f243)

mkdocs.yml

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       - vertex/manual.md
     - Baseline: vertex/baseline.md
     - SBAS: vertex/sbas.md
+    - Displacement: vertex/displacement.md
     - Event: vertex/events.md
     - Derived Datasets: vertex/derived_datasets.md
     - What's New: vertex/changelog.md