Parent Layer: Sand Dunes

Name: Dunes_from_Sentinel_1_15m_Coherence

Display Field: Shape_Length

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: To improve the resolution of the previous Sentinel-1 coherence mosaic product, we have generated our own a 15 m resolution mosaic of Sentinel-1 12-daily median coherence mosaic from original the Sentinel-1 SLC scenes collected in the summer of 2021. The product was generated by calculating per pixel median of all 12-daily Sentinel-1 coherence image pairs acquired over the study area in the summer (June-August) of 2021. Radar coherence is a measure that is sensitive to surface changes (dunes activity, vegetation, construction). The dunes have low coherence values and appear in dark shades in the provided coherence image mosaic. This product is used to drive the dune distribution map.

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Supported Query Formats: JSON, geoJSON, PBF

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Extent:

XMin: 4304406.563700002
YMin: 2104012.714400001
XMax: 5372074.2929
YMax: 3165925.2423
Spatial Reference: 102100  (3857)

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Fields:

• OBJECTID ( type: esriFieldTypeOID, alias: OBJECTID )
• Shape ( type: esriFieldTypeGeometry, alias: Shape )
• Shape_Length ( type: esriFieldTypeDouble, alias: Shape_Length )
• Shape_Area ( type: esriFieldTypeDouble, alias: Shape_Area )

Supported Operations:   Query   Query Attachments   Query Analytic   Generate Renderer   Return Updates

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