You may have heard about the tailings dam collapse at Feijão mine in Brumadinho, Brazil. The disaster occurred two days ago on Jan 25 and at least 58 people were found dead, while 300 are still missing. A Sentinel-2 acquisition was planned for today, therefore tonight I checked the EO Browser to see if the mud flow was visible.
Before/after images of Brumadinho mudflow from Sentinel2 imagery (false color composite using the near-infrared band)
Anak Krakatau (Indonesia) erupted on 22 December 2018. During the eruption the collapse of the volcano summit triggered a tsunami in Sunda Strait causing a death toll of 437. The first post-event clear-sky image was finally acquired by Sentinel-2 today on 13 Jan 2019 (after 10 cloudy acquisitions). Here is an image comparison of the Krakatau Island before and after the eruption.
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On Sep 28 a 7.5 magnitude earthquake struck the city of Palu, in Sulawesi Indonesia. The quake was followed by a tsunami. The animation below shows two Sentinel-2 images before and after the earthquake in Palu. If you look closely you can see the horizontal displacement due to the fault movement through the city. It also shows the damages caused by the tsunami wave.
An earthquake with magnitude 6.7 occurred on 06 Sep 2018 in Hokkaido, Japan, killing at least 17 people and leaving nearly 3 million households in Hokkaido without electricity.
The quake came two days after typhoon Jebi, "the strongest storm of 25 years".
Below is an image comparison near Atsuma dam lake in the south of Hokkaido, before and after the earthquake, showing multiple landslides in the forest areas. Both images were acquired by Sentinel-2 and are shown as false color composites of bands 11-8-2. Click here to view a larger version.
The heavy rainfalls brought by typhoon Jebi probably explain why the earthquake triggered so many landslides. I would like to count the landslides in this area, but the Sep 15 image is not yet available in my favorite image processing engine. I will check later.
- in the AGU landslide blog
- Google published a crisis map but it seems that the imagery is not publicly available
Thanks to Laurent Longuevergne for letting me know about this!