The 2019 Coquimbo earthquake occurred 10 km south southwest of

Coquimbo Coquimbo is a port List of cities in Chile, city, Communes of Chile, commune and Capital city, capital of the Elqui Province, located on the Pan-American Highway, in the Coquimbo Region of Chile. Coquimbo is situated in a valley south of La Seren ...

Chile Chile, officially the Republic of Chile, is a country in the western part of South America. It is the southernmost country in the world, and the closest to Antarctica, occupying a long and narrow strip of land between the Andes to the eas ...

, on January 19, 2019 at 22:32 (local time). The

epicenter The epicenter, epicentre () or epicentrum in seismology is the point on the Earth's surface directly above a hypocenter or focus, the point where an earthquake or an underground explosion originates. Surface damage Before the instrumental pe ...

was located off the coast of the Coquimbo Region at a depth of 63.0 km,) and had a

moment magnitude The moment magnitude scale (MMS; denoted explicitly with or Mw, and generally implied with use of a single M for magnitude) is a measure of an earthquake's magnitude ("size" or strength) based on its seismic moment. It was defined in a 1979 pape ...

of 6.7. On the

Mercalli scale The Modified Mercalli intensity scale (MM, MMI, or MCS), developed from Giuseppe Mercalli's Mercalli intensity scale of 1902, is a seismic intensity scale used for measuring the intensity of shaking produced by an earthquake. It measures the eff ...

, the earthquake reached an intensity of VIII.

Tectonic setting

Chile lies above the

convergent plate boundary A convergent boundary (also known as a destructive boundary) is an area on Earth where two or more lithospheric plates collide. One plate eventually slides beneath the other, a process known as subduction. The subduction zone can be defined by a p ...

where the

Nazca Plate The Nazca Plate or Nasca Plate, named after the Nazca region of southern Peru, is an oceanic tectonic plate in the eastern Pacific Ocean basin off the west coast of South America. The ongoing subduction, along the Peru–Chile Trench, of the ...

subducting Subduction is a geological process in which the oceanic lithosphere is recycled into the Earth's mantle at convergent boundaries. Where the oceanic lithosphere of a tectonic plate converges with the less dense lithosphere of a second plate, the ...

beneath the

South American Plate The South American Plate is a major tectonic plate which includes the continent of South America as well as a sizable region of the Atlantic Ocean seabed extending eastward to the African Plate, with which it forms the southern part of the Mi ...

, at a location where they converge at a rate of seventy millimeters a year. This quake was an oceanic interplate type, occurred in the downgoing slab of the Nazca Plate and not on the interface between the two plates. This event took place under the area of Chile, between 27° and 33° S, where the slab is nearly horizontal and there is a high degree of mechanical coupling between the plates.

Damage and casualties

One hundred and eighty houses collapsed and moderate damage occurred in almost 500 structures in the historic center of

and La Serena. Cracks were reported in several houses, and some walls partially collapsed. The Our Lady of Mercy Cathedral in La Serena also suffered minor damage. Two people died of

heart attacks A myocardial infarction (MI), commonly known as a heart attack, occurs when blood flow decreases or stops to the coronary artery of the heart, causing damage to the heart muscle. The most common symptom is chest pain or discomfort which may tr ...

. Power outages affected more than 200,000 households in the cities of Limari, La Serena, and

References

External links

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Compilations of videos that captured the moment the quake hit
- Calma va a Pasar on Youtube January 2019 events in Chile Earthquakes in Chile Articles containing video clips 2019 earthquakes History of Coquimbo Region Presidency of Sebastián Piñera 2019 disasters in Chile {{SouthAm-earthquake-stub

Tectonic setting

Damage and casualties

See also

References

External links