Английская Википедия:1970 Colombia earthquake
The 1970 Colombia earthquake occurred in Colombia on July 31.
Details and aftermath
The shock killed one person and injured several others. Because it was a deep-focus earthquake, shaking occurred over an extensive area, including San Juan, Bogotá, Caracas, Buenos Aires, and São Paulo; it was felt as far north as Mexico City.[1] Its depth forestalled more serious casualties,[1] and there were no aftershocks.[2]
The depth of the earthquake prompted scientists in South America to install seismometer networks focused on long-period earthquakes.[1] Until the 1994 Bolivia earthquake, the 1970 Colombia earthquake was famous among seismologists as the largest deep earthquake.[3]
Analysis
A study completed by Dziewonski and Gilbert (1974) determined that the earthquake had featured isotropic compression, or an increase in density near the rupture point similar to an implosion;[4] this was released to great controversy.[3] They also claimed that the compression had been initiated 80 seconds before the actual earthquake's short-period shaking. Many studies have reached differing conclusions including a dearth of isotropic movement, and many scientists feel that resolution created errors in Dziewonski and Gilbert's findings.[5] In 1997, Russakoff, Ekstrom, and Tromp reassessed their findings utilizing more advanced equipment that factored in shear wave splitting and coupling (the measure of how tightly locked two sides of a fault or plate are) and confirmed that there was very little isotropic compression.[3]
See also
References
Bibliography
External links
Шаблон:Earthquakes in 1970 Шаблон:Earthquakes in Colombia Шаблон:Tectonism in Colombia
- ↑ 1,0 1,1 1,2 Шаблон:Cite web
- ↑ Шаблон:Cite book
- ↑ 3,0 3,1 3,2 Russakoff, Ekstrom, and Tromp, pg. 20423.
- ↑ Шаблон:Cite journal
- ↑ Russakoff, Ekstrom, and Tromp, pg. 20424.
