M 7.5 earthquake – 42 km SSW of Shikotan, Russia
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Local time: Sep 11, 1935 · 23:04 (UTC+9)
MajorShallow · 35 km
Reviewed by a seismologist
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- Magnitude
- 7.5moment magnitude (mw)
- Depth
- 35 kmShallow earthquake
- Epicenter
- 43.424, 146.61885 km from Nemuro
- Energy released
- 2.7 megatons of TNTabout 179 × Hiroshima
- Felt reports
- —"Did You Feel It?" responses
- Shaking intensity
- 6.4max. instrumental (MMI)
- Aftershocks
- 1M2.5+ within 145 km, up to 60 days
- Significance
- 856USGS 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?
Major earthquake. It released 2.7 megatons of TNT, 5,623 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 145 km in the 60 days after.
The strongest earthquakes within 300 km
Since 1900, around Japan.
- 8.5 1963 Kuril Islands Earthquake Oct 13, 1963
- 8.3 48 km E of Shikotan, Russia Oct 4, 1994
- 8.3 1958 Kuril Islands Earthquake Nov 6, 1958
- 8.2 1969 Hokkaido Toho-oki Earthquake Aug 11, 1969
- 8.2 2003 Tokachi-Oki Earthquake Sep 25, 2003
- 8.1 1952 Tokachi-Oki Earthquake Mar 4, 1952
- 7.9 128 km ESE of Kuril’sk, Russia Dec 3, 1995
- 7.7 19 km ESE of Nemuro, Japan Jun 17, 1973