M 8.3 earthquake – The 1905 Bulnay (Bolnai), Mongolia Earthquake
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Local time: Jul 23, 1905 · 08:53 (UTC+6:06)
GreatShallow · 15 km
Reviewed by a seismologist
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- Magnitude
- 8.3moment magnitude (mw)
- Depth
- 15 kmShallow earthquake
- Epicenter
- 49.292, 96.843173 km from Uliastay
- Energy released
- 43 megatons of TNTabout 2,833 × Hiroshima
- Felt reports
- —"Did You Feel It?" responses
- Shaking intensity
- 8.0max. instrumental (MMI)
- Aftershocks
- 1M2.5+ within 430 km, up to 60 days
- Significance
- 1,068USGS score, 0–1,000+
The strongest within 300 km on record
No earthquake this strong has been recorded this close since our catalog begins in 1900.
How strong was it?
Great earthquake. It released 43 megatons of TNT, 89,125 times the energy of a magnitude 5.0. Bars use the magnitude scale: every step is about 32 times more energy.
Aftershocks
1 earthquakes of M2.5+ within 430 km in the 60 days after.
The strongest earthquakes within 300 km
Since 1900, around Mongolia.
- 7.9 The 1905 Tsetserleg, Mongolia Earthquake Jul 9, 1905
- 7.1 Western Mongolia Feb 1, 1903
- 6.9 80 km ESE of Kungurtug, Russia Jul 11, 1905
- 6.9 76 km W of Mörön, Mongolia Jul 14, 1905
- 6.7 38 km NE of Saryg-Sep, Russia Feb 26, 2012
- 6.6 45 km NNE of Saryg-Sep, Russia Dec 27, 2011
- 6.4 95 km NW of Altai, Mongolia Sep 14, 1923
- 6.4 64 km NE of Kungurtug, Russia Dec 27, 1991