2004 Al Hoceima earthquake
|Date||24 February 2004|
|Origin time||2:27 UTC|
|Magnitude||6.4 Mw |
|Depth||5.5 km (3.4 mi) |
|Countries or regions||Morocco|
|Max. intensity||IX (Violent)|
|Casualties||629 dead 
The 2004 Al Hoceima earthquake occurred on 24 February near the coast of northern Morocco. The earthquake registered 6.4 on the moment magnitude scale and had a maximum perceived intensity of IX (Violent) on the Mercalli Intensity Scale. At least 629 people were killed, 926 injured, 2,539 homes destroyed and more than 15,000 people were made homeless in the Al Hoceima-Imzourene-Beni Abdallah area.
The moment tensors and pattern of surface cracks indicate left-lateral strike-slip faulting on a buried NE-SW trending fault.
This quake occurred near the epicenter of the magnitude 6.0 Al Hoceima earthquake of May 26, 1994, that injured one person and caused significant damage to adobe buildings.
Ground cracks and landslides were observed between Ajdir and Beni Abdallah and maximum peak ground acceleration of 0.24g was recorded near Imzourene.
Several aftershocks killed at least three people and destroyed previously weakened buildings. This earthquake occurred near the eastern end of the Rif mountain belt, which is part of the diffuse boundary between the African and Eurasian plates.
- Akoglu et al. 2006, p. 467
- Telesca, L.; Rouai, M.; Cherkaoui, T. E. (2009), "Time-clustering behavior in the sequence of the aftershocks of the Al-Hoceima (Morocco) 24 February 2004 earthquake", Natural Hazards and Earth System Sciences (European Geosciences Union) 9: 2065
- Goodman, Al (February 25, 2004). "Over 500 killed in Morocco quake". CNN.
- Akoglu, A. M.; Cakir, Z.; Meghraoui, M.; Belabbes, S.; El Alami, S. O.; Ergintav, S.; Akyüz, H. Serdar (2006), "The 1994–2004 Al Hoceima (Morocco) earthquake sequence: Conjugate fault ruptures deduced from InSAR", Earth and Planetary Science Letters (Elsevier) 252: 467–480
- Stich, D.; de Lis Mancilla, F.; Baumont, D.; Morales, J. (2005), "Source analysis of the Mw 6.3 2004 Al Hoceima earthquake (Morocco) using regional apparent source time functions", Journal of Geophysical Research (American Geophysical Union ) 110 (B06306): 1–13
- M6.4 Al Hoceima, Morocco Earthquake of 24 February 2004 – USGS
- Buried Strike Slip Faults: The 1994 and 2004 Al Hoceima, Morocco Earthquakes
- Moroccan Seismic Network: Overview – IRIS Consortium
- The seismic design code for buildings: A priority for seismic risk reduction in Morocco
- Preliminary Observations on the Al Hoceima, Morocco, Earthquake of February 24, 2004 – EERI
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