Indonesia Semeru Volcano: Damage Proxy Maps, Dec 2021

✦ DISCOVERED BY ORIONAIEarth Observatory of SingaporeEnvironmentIndonesia
Map preview of Indonesia Semeru Volcano: Damage Proxy Maps, Dec 2021Indonesia

About this dataset

# Indonesia Semeru Volcano: Damage Proxy Maps, Dec 2021 The **Earth Observatory of Singapore – Remote Sensing Lab (EOS-RS)** produced these damage proxy maps for Indonesia Semeru Volcano (Dec 2021) 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 - **EOS-RS Pyroclastic flow extent map: Indonesia, Semeru volcano, 5 Dec 2021, v0.4** - **Peta kerusakan EOS-RS: Erupsi Gunung Semeru, Indonesia, Dec 2021, v0.9** - **Peta kerusakan EOS-RS: Erupsi Gunung Semeru, Indonesia, Dec 2021, v0.9** - **Peta kerusakan EOS-RS: Erupsi Gunung Semeru, Indonesia, Dec 2021, v0.8** (superseded) - **Peta kerusakan EOS-RS: Erupsi Gunung Semeru, Indonesia, Dec 2021, v0.8** (superseded) **More map details and files:** **More map details and files:**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. The map is derived from synthetic aperture radar (SAR) images acquired by the ALOS-2 satellites operated by the Japan Aerospace Exploration Agency (JAXA). 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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