Japan Floods: Flood Proxy Maps, Aug 2019

✦ DISCOVERED BY ORIONAIEarth Observatory of SingaporeEnvironmentJapan
Map preview of Japan Floods: Flood Proxy Maps, Aug 2019Japan

About this dataset

# Japan Floods: Flood Proxy Maps, Aug 2019 The Advanced Rapid Imaging and Analysis (ARIA) team at NASA's Jet Propulsion Laboratory and Caltech, in collaboration with the Earth Observatory of Singapore (EOS), produced these flood proxy maps for Japan Floods (Aug 2019) from synthetic aperture radar (SAR) satellite images. Each map is a separate ZIP below with its GeoTIFF, a KMZ for Google Earth, the PNG figures and a text file describing how it was made and how to read it. ## Maps in this dataset - **ARIA-SG Preliminary Flood Proxy Map: Japan, 2019 Floods v0.5 P22** (superseded) - **ARIA-SG Preliminary Flood Proxy Map: Japan, 2019 Floods v0.5 P131** **More map details and files:**

Documentation

Change detection on synthetic aperture radar (SAR) satellite images acquired before and after the event. Damage Proxy Maps show significant changes in radar coherence and amplitude; Flood Proxy Maps show areas that changed to standing water. Maps are preliminary and checked against news reports and ground-level imagery where available. Derived from synthetic aperture radar data acquired by the ALOS-2 satellites operated by the Japan Aerospace Exploration Agency (JAXA) before (18 Mar 2015 - yellow, 4 Jun 2019 - red) and during (28 Aug 2019 - yellow, 27 Aug 2019 - red) the event. These are preliminary maps derived from satellite radar and should be used as guidance only. Coloured pixels may include false positives, and their absence does not mean an absence of damage or flooding.

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