Marapi Volcano Update; A Lethal & Destructive Lahar was Generated

For the 2nd time in 6.5 months, a lethal disaster sadly occurred at the erupting Mount Marapi volcano. This occurred due to heavy rainfall, which washed quickly away downslope to the prior incineration of a patch of ground due to Marapi's December 3rd eruption. As a result, a lahar with an estimated height of 30 feet was generated which damaged dozens of structures. This video explains why this lahar was generated, and the danger that so-called "secondary lahars" can generate.

Thumbnail Photo Credit: Cropped image taken from Explore West Sumatra's video,    • GUNUNG MARAPI SUMATRA BARAT: DRONE NY...  . Used with Permission.

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Source footage video links:
[1]    • GUNUNG MARAPI SUMATRA BARAT: DRONE NY...  
[2]    • BANJIR BANDANG (GALODO) DAN LONGSOR D...  

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Sources/Citations:
[1] PVMBG
[2] Brown, S.K., Jenkins, S.F., Sparks, R.S.J. et al. Volcanic fatalities database: analysis of volcanic threat with distance and victim classification. J Appl. Volcanol. 6, 15 (2017). https://doi.org/10.1186/s13617-017-00..., CC BY 4.0.
[3] VEIs, dates/years, composition, tephra layer name, DRE estimates, and bulk tephra volume estimates for volcanic eruptions shown in this video which were assigned a VEI 4 or larger are sourced from the LaMEVE database (British Geological Survey © UKRI), https://www2.bgs.ac.uk/vogripa/view/c..., Used with Permission
[4] Source of Volcanic Explosivity Index (VEI) methodology and criteria: Newhall, C. G., and Self, S. (1982), The volcanic explosivity index (VEI) an estimate of explosive magnitude for historical volcanism, J. Geophys. Res., 87(C2), 1231–1238, doi:10.1029/JC087iC02p01231. Accessed / Read by    / geologyhub   on Oct 5th, 2022.

0:00 A Destructive Lahar
0:47 Heavy Rainfall
3:23 Eruption Size
4:03 Secondary Lahars