- Type:
- Earthquake
- Date:
- November 17, 1987 CE
- Location:
- Gulf of Alaska
- Magnitude:
- 6.9 Ms
- Depth:
- 10 km
- Intensity (MMI):
- 4.72
Cross-catalog records
This event is recorded in 6 separate scientific catalogs, each of which may give a different magnitude (the disagreement between catalogs is itself valuable for research):
- USGS_COMCAT: Ms 6.9
- NOAA_SIGEQ: Mw 7.9
- NOAA_SIGEQ: Mw 7.2
- USGS_COMCAT: mb 5.5
- USGS_COMCAT: Mw 5.4
- USGS_COMCAT: Mw 5
Other earthquake records of 1987 CE
- Ecuador, Napo Province, Quito, Tulcan · Mw 7.2 · 5,000 deaths
- Indonesia, Timor: Pantar, Mount Sirung · Ms 6.5 · 125 deaths
- California, Whittier · Ms 5.7 · 8 deaths
- Chile, Arica, Iquique · Ms 6.9 · 5 deaths
- Peru, Santaog De Chuco, Trujillo, Chimbote · Ms 5.1 · 3 deaths
- Papua New Guinea, Huon Peninsula, Umboi Island · Ms 7.6 · 3 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 6.9 - Gulf of Alaska (1987 CE) happen?
- November 17, 1987 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.