'Earthquake, Glacier Blast Or China's Dam...' What Caused Nepal Flash Floods Revealed - YouTube
youtube.com
USGS reclassified Nepal's magnitude-5.2 seismic signal as a collapse, not an earthquake — and that single data point is reshaping every theory about what triggered the deadly floods.
Competing HypothesesCausal AttributionRisk ExternalitiesNatural Hazard Theory
Theory Briefing
- USGS reclassified the magnitude-5.2 seismic signal as a collapse event, not a natural earthquake, eliminating one leading explanation for the floods.
- Three competing theories — tectonic earthquake, glacial lake outburst, and upstream dam release — were all in play before the reclassification.
- The collapse origin of the seismic signal now points investigators toward a sudden mass failure rather than a geologic or man-made water release.
- China's dam upstream was named as a candidate cause, reflecting how cross-border infrastructure raises accountability questions when disasters strike downstream.