Landslides in Kyrgyzstan captured by Sentinel-2

Sentinel-2 snow-ice

Simon Gascoin, 18 mai 2017

The giant Kurbu-Tash landslide in Kyrgyzstan occurred on 23-24 April 2017 and was highlighted by Dave Petley in the landslide blog of the American Geophysical Union.

Please read the erratum: https://www.cesbio.cnrs.fr/multitemp/?p=10566

The landslide can be seen in a Sentinel-2 image acquired 5 days after the event. I used a near-infrared composite to increase the contrast  between the vegetation and the bare soil.

I used this image to estimate that the length of the landslide is about 3.5 km [1]. The volume of the landslide was estimated to 2.8 million cubic meters by AKI press [2]. Local news reported there were no fatalities, but 5 days later, another landslide in Ayu village killed 24 people. I think that this landslide is also visible in the same Sentinel-2 imagery although it is less evident.

[1] Half of the length of the massive Glacier Bay landslide!

[2] This is still 20 times less than the first Aru glacier avalanche.

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