Chile Earthquake 5.0 - 18 km NNE of Ovalle, Chile 2022-12-10 08:48:36

 5.0 - 18 km NNE of Ovalle, Chile

2022-12-10 08:48:36 (UTC)30.459°S 71.096°W30.1 km profundity

💫

Authoritative Locale

ISO

CHL

Locale

Coquimbo

Country

Chile

Close by Spots

Ovalle, Coquimbo District, Chile

18.6 km (11.6 mi) SSWPopulation: 77138

Monte Patria, Coquimbo District, Chile

29.3 km (18.2 mi) SSEPopulation: 13945

Vicuña, Coquimbo District, Chile

59.8 km (37.2 mi) NEPopulation: 13496

Coquimbo, Coquimbo District, Chile

61 km (37.9 mi) NNWPopulation: 161317

La Serena, Coquimbo District, Chile

63.5 km (39.4 mi) NNWPopulation: 154521

Distance and bearing from focal point to local spot.

Structural Outline

Seismotectonics of South America (Nazca Plate District)

The South American curve reaches out north of 7,000 km, from the Chilean edge triple intersection seaward of southern Chile to its crossing point with the Panama break zone, seaward of the southern shore of Panama in Focal America. It denotes the plate limit between the subducting Nazca plate and the South America plate, where the maritime outside and lithosphere of the Nazca plate start their plunge into the mantle underneath South America. The assembly related with this subduction cycle is liable for the inspire of the Andes Mountains, and for the dynamic volcanic chain present along a lot of this misshapening front. Comparative with a proper South America plate, the Nazca plate moves somewhat north of eastwards at a rate fluctuating from roughly 80 mm/yr in the south to roughly 65 mm/yr in the north. Albeit the pace of subduction fluctuates little along the whole circular segment, there are perplexing changes in the geologic cycles along the subduction zone that decisively impact volcanic movement, crustal distortion, quake age and event up and down the western edge of South America.

The vast majority of the huge tremors in South America are obliged to shallow profundities of 0 to 70 km coming about because of both crustal and interplate distortion. Crustal tremors result from deformity and mountain working in the superseding South America plate and create quakes as profound as roughly 50 km. Interplate quakes happen because of slip along the plunging connection point between the Nazca and the South American plates. Interplate quakes in this district are regular and frequently enormous, and happen between the profundities of roughly 10 and 60 km. Beginning around 1900, various greatness 8 or bigger seismic tremors have happened on this subduction zone interface that were trailed by obliterating waves, including the 1960 M9.5 quake in southern Chile, the biggest instrumentally kept quake on the planet. Other striking shallow wave producing tremors incorporate the 1906 M8.5 quake close to Esmeraldas, Ecuador, the 1922 M8.5 seismic tremor close to Coquimbo, Chile, the 2001 M8.4 Arequipa, Peru quake, the 2007 M8.0 quake close to Pisco, Peru, and the 2010 M8.8 Maule, Chile seismic tremor found only more than the 1960 occasion.

Huge middle profundity seismic tremors (those happening between profundities of roughly 70 and 300 km) are somewhat restricted in size and spatial degree in South America, and happen inside the Nazca plate because of inner twisting inside the subducting plate. These seismic tremors by and large group underneath northern Chile and southwestern Bolivia, and less significantly underneath northern Peru and southern Ecuador, with profundities somewhere in the range of 110 and 130 km. The majority of these tremors happen contiguous the curve in the shoreline among Peru and Chile. The latest huge middle profundity quake in this district was the 2005 M7.8 Tarapaca, Chile tremor.

Seismic tremors can likewise be created to profundities more noteworthy than 600 km because of proceeded with inward distortion of the subducting Nazca plate. Profound center seismic tremors in South America are not seen from a profundity scope of roughly 300 to 500 km. All things considered, profound tremors in this district happen at profundities of 500 to 650 km and are amassed into two zones: one that runs underneath the Peru-Brazil line and another that reaches out from focal Bolivia to focal Argentina. These seismic tremors for the most part don't show huge sizes. An exemption for this was the 1994 Bolivian tremor in northwestern Bolivia. This M8.2 quake happened at a profundity of 631 km, which was as of not long ago the biggest profound center tremor instrumentally recorded (supplanted in May 2013 by a M8.3 quake 610 km underneath the Ocean of Okhotsk, Russia), and was felt broadly all through South and North America.

Subduction of the Nazca plate is mathematically mind boggling and influences the topography and seismicity of the western edge of South America. The middle profundity locales of the subducting Nazca plate can be portioned into five segments in view of their point of subduction underneath the South America plate. Three portions are described by steeply plunging subduction; the other two by close flat subduction. The Nazca plate underneath northern Ecuador, southern Peru to northern Chile, and southern Chile slide into the mantle at points of 25° to 30°. Conversely, the chunk underneath southern Ecuador to focal Peru, and under focal Chile, is subducting at a shallow point of roughly 10° or less. In these areas of "level piece" subduction, the Nazca plate moves evenly for a few hundred kilometers prior to proceeding with its plunge into the mantle, and is shadowed by a drawn out zone of crustal seismicity in the overlying South America plate. Albeit the South America plate shows a chain of dynamic volcanism coming about because of the subduction and halfway liquefying of the Nazca maritime lithosphere along a large portion of the curve, these districts of surmised shallow subduction relate with a shortfall of volcanic action.