1737 Valdivia earthquake

1737 Valdivia earthquake
1737 Valdivia earthquake is located in Chile
1737 Valdivia earthquake
Location within Chile
Local date
  • December 24, 1737 (1737-12-24)
Magnitude
Epicenter39°48′50″S 73°14′45″W / 39.813889°S 73.245833°W / -39.813889; -73.245833
Areas affectedChile
Tsunamino

The 1737 Valdivia earthquake struck south-central Chile on December 24 with an estimated moment magnitude of 7.5.[2][3] Together with earthquakes in 1575 and 1837 the earthquake is among the historical predecessors to the great 1960 earthquake.[2] While the overlap in affected areas is significant relative to the 1837 earthquake, the 1737 earthquake may have occurred slightly more to the north.[2]

The earthquake was felt in Concepción but most damage occurred in the towns of Valdivia and Castro, Chiloé Archipelago.[2] In both of these locations churches were destroyed by the earthquake. In addition the Valdivian Fort System and the Royal Storehouse of Valdivia took heavy damage.[2] Landslides occurred next to Villarrica, Calafquén, and Riñihue lakes.[2] Over all this indicates the rupture zone was about 640 km long, with most damage being concentrated in the middle section (Valdivia).[2]

There is no evidence the earthquake would have produced a tsunami.[2]

See also

References

  1. ↑ Lomnitz, C. (1 May 2004). "Major Earthquakes of Chile: A Historical Survey, 1535-1960". GeoScienceWorld. Retrieved 8 August 2022.
  2. 1 2 3 4 5 6 7 8 Cisternas, M.; Carvajal, M.; Wesson, R.; Ely, L.L.; Gorigoitia, N. (2018). "Exploring the Historical Earthquakes Preceding the Giant 1960 Chile Earthquake in a Time-Dependent Seismogenic Zone". Bulletin of the Seismological Society of America. 107 (6): 2664–2675. Bibcode:2017BuSSA.107.2664C. doi:10.1785/0120170103.
  3. ↑ Lomnitz, C. (1 May 2004). "Major Earthquakes of Chile: A Historical Survey, 1535-1960". GeoScienceWorld. Retrieved 8 August 2022.
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