- Type:
- Earthquake
- Date:
- November 23, 1977 CE
- Location:
- 181 km E of Atka, Alaska
- Magnitude:
- 5.5 Ms
- Depth:
- 53 km
Cross-catalog records
This event is recorded in 3 separate scientific catalogs, each of which may give a different magnitude (the disagreement between catalogs is itself valuable for research):
- USGS_COMCAT: Ms 5.5
- USGS_COMCAT: mb 5
- USGS_COMCAT: mb 5.3
Other earthquake records of 1977 CE
- Romania, Bucharest · Mw 7.5 · 1,641 deaths
- Iran, Bab-Tangol · Mw 5.9 · 584 deaths
- Iran, Naghan, Ardal, Jaghdan, Dastgerd, Kordan, Sarmur · Mw 6 · 366 deaths
- Indonesia, Sunda Islands · Mw 8.3 · 189 deaths
- Iran, Bandar Abbas · Mw 6.7 · 167 deaths
- Argentina, San Juan Province: Mendoza · Mw 7.5 · 65 deaths
Source: U.S. Geological Survey, Advanced National Seismic System (ANSS) Comprehensive Catalog (ComCat) · License: U.S. Public Domain (USGS) · institutional record ↗
Frequently asked questions
- When did M 5.5 - 181 km E of Atka, Alaska (1977 CE) happen?
- November 23, 1977 CE.
- Where does this information come from?
- This record comes from U.S. Geological Survey, Advanced National Seismic System (ANSS) Comprehensive Catalog (ComCat); it was not hand-authored and is stored together with its source.