Rapid Flood Mapping with Sentinel-1 SAR Imagery in Google Earth Engine скачать в хорошем качестве

Rapid Flood Mapping with Sentinel-1 SAR Imagery in Google Earth Engine

In this video, we demonstrate a step-by-step workflow for rapid flood detection and mapping using Sentinel-1 Synthetic Aperture Radar (SAR) imagery in Google Earth Engine. Starting with defining the region of interest and analysis period, we process SAR data captured before and after flood events to highlight inundated areas. We apply speckle noise reduction, generate VV polarization composites, and perform change detection analysis to clearly identify flood-affected regions. A histogram of backscatter changes is created to assess flood severity, followed by a thresholding technique to mask and extract flooded pixels. Finally, we calculate the total flooded area in square kilometers and visualize the results with customized color palettes for easy interpretation. This powerful approach allows near real-time flood monitoring and supports disaster response, risk assessment, and decision-making for emergency management. What you’ll learn in this video, How to process Sentinel-1 SAR data in Google Earth Engine, techniques for speckle noise reduction in SAR images, change detection for identifying flood-affected zones, flood extent mapping using threshold masks, and estimating total flood area (km²) automatically. ----------------------------------------------------------------- Code link: https://code.earthengine.google.com/9... Sentinel-1 SAR GRD: https://developers.google.com/earth-e... If you’re interested in remote sensing, flood modeling, disaster monitoring, or geospatial analysis, this tutorial is a must-watch! ----------------------------------------------------------------- 💰🤝🏻Join Membership to get access to perks & Support us🤝🏻💰    / @terraspatial   ----------------------------------------------------------------- 👩‍💻 Join the Terra Spatial Community: Engage with fellow learners, share your experiences, and get support on our dedicated community forum. 🌐 Stay connected: 📌 Subscribe to our Channel:    / @terraspatial.  . 📌 Facebook:   / terraspatial   📌 Geosuite blog: https://geosuite.blogspot.com/ --------------------------------------------------------------- 👍 **Don't forget to Like, Share, and Subscribe for more insightful tutorials! 🌐✨ #FloodMapping #Sentinel1 #GoogleEarthEngine #RemoteSensing #DisasterManagement #SARImagery #FloodMonitoring