Algeria earthquakes in 1981
10 earthquakes of magnitude 4.5 or more were located in Algeria in 1981. The largest: M5.7 19 km N of El Abadia, Algeria, Feb 1, 1981.
From the USGS catalog. Times are local to each quake.
Map
Where every quake of 1981 was located in Algeria. Select one for its page.
Every quake of 1981
Magnitude 4.5 and up, newest first.
- 4.621 km NW of El Abadia, Algeria · 10 km deep
- 4.52 km SSE of El Abadia, Algeria · 10 km deep
- 4.748 km NNW of Aïn Defla, Algeria · 17 km deep
- 5.015 km ENE of Ammi Moussa, Algeria · 10 km deep
- 4.716 km N of Oued Fodda, Algeria · 10 km deep
- 4.919 km N of El Abadia, Algeria · 10 km deep
- 5.719 km N of El Abadia, Algeria · 10 km deep
- 4.615 km NNW of El Abadia, Algeria · 10 km deep
- 4.816 km NNW of El Abadia, Algeria · 10 km deep
- 5.010 km NNW of El Abadia, Algeria · 10 km deep
Month by month
Counted by UTC date, which is how the catalog files them.
| Month | Quakes | Largest | Where |
|---|---|---|---|
| January 1981 | 3 | 5.0 | 10 km NNW of El Abadia, Algeria |
| February 1981 | 4 | 5.7 | 19 km N of El Abadia, Algeria |
| March 1981 | 1 | 4.7 | 48 km NNW of Aïn Defla, Algeria |
| April 1981 | 0 | ||
| May 1981 | 0 | ||
| June 1981 | 1 | 4.5 | 2 km SSE of El Abadia, Algeria |
| July 1981 | 0 | ||
| August 1981 | 0 | ||
| September 1981 | 1 | 4.6 | 21 km NW of El Abadia, Algeria |
| October 1981 | 0 | ||
| November 1981 | 0 | ||
| December 1981 | 0 |
What this means
The catalog is only as complete as the instruments of the time. Worldwide coverage of magnitude 5 and up dates from the 1960s, and of 4.5 from the 1990s; earlier years hold the large quakes and the ones near a station, so a low count in an early year means fewer instruments, not a quiet earth.
By year
Every year the USGS catalog covers.
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- 2000s2000200120022003200420052006200720082009
- 1990s1990199119921993199419951996199719981999
- 1980s1980198119821983198419851986198719881989
- 1970s1970197119721973197419751976197719781979
- 1960s1960196119621963196419651966196719681969
- 1950s1950195119521953195419551956195719581959
- 1940s1940194119421943194419451946194719481949
- 1930s1930193119321933193419351936193719381939
- 1920s1920192119221923192419251926192719281929
- 1910s1910191119121913191419151916191719181919
- 1900s1900190119021903190419051906190719081909
Nearby
Sources
Earthquakes, magnitudes, depths, shaking estimates and felt reports from the U.S. Geological Survey Earthquake Hazards Program, read from its live feeds and its catalog back to 1900. Tsunami messages from NOAA’s tsunami warning centers.