updated list of recent earthquakes y earthquakes registered in the regions of the Peru, Lima, Arequipa, Huanuco, Ica, Loreto, Tacna, Moquegua, Tumbes, Piura, etc Here the minute by minute with official information of the Geophysical Institute of Peru (IGP) from today.
#URGENT: 7.0 magnitude earthquake was recorded on the border of Peru with Ecuador.
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READ ALSO: Earthquake in Lima and Callao of magnitude 5.6 felt strong because the epicenter was located just below the city
ALSO READ: Earthquakes, tremors and earthquakes in Lima today
WHAT IS AN EARTHQUAKE AND WHAT IS ITS ORIGIN?
It is defined as the movement or vibration of the ground, which is generally produced by the sudden release of energy accumulated for a long time due to the displacement of rock masses in the geological faults or by the displacement of tectonic plates.
In general, the Earthquakes can have various sources of origin. and among the best known are the formation and reactivation of geological faults, displacements of the tectonic plates, volcanic eruptions, by anthropic activity (mining, nuclear tests), dam induced seismicity, possible meteorite falls, among others.
WHY DO EARTHQUAKES OCCUR IN OUR COUNTRY?
Peru is located in the so-called Pacific ring of fire, at the same time the South American continent (Continental Plate) on whose western edge we are, is collided head-on with the Nazca Plate and as a product, the Nazca Plate (Oceanic Plate) enters below the Continental giving rise to the process called subduction. As a result of this collision, the Andean Cordillerabeing considered worldwide the youngest dynamic structure on earth.
The plate collision occurs between two surfaces in continuous friction and give rise to the highest frequency of earthquakes in Peru, being here where the largest earthquakes of which there is history have been generated. He growth of the mountain range it also produces earthquakes and they are less frequent and smaller in magnitude, but they can be just as damaging as subduction ones.
It must now be understood that the oceanic plate It is found moving below the mountain range to distances so far from the coast that it is possible that it is below the city of pucallpa to a depth of 120 km on average and also produces major earthquakes that usually produce surface damage.
WHAT AREAS OR REGIONS OF PERU ARE THE MOST SEISMIC?
In Peru there are mainly two seismogenic sources. The first considers the entire area between the coastline and the Peruvian-Chilean trench, this source being the one that generates the largest number of earthquakes to depths of 60km and magnitudes as high such as those of the 2007 Pisco earthquake (8.0 Mw).
These earthquakes have their origin on the surface of plate friction, Nazca and South America. The second source considers the regions where there are active geological faults that produce earthquakes with less frequency and moderate magnitudes (< 6.5 Mw) that can cause significant damage because their epicenters are close to cities and near the surface.
In this source the Moyobamba earthquakes of 1990 and 1991 due to system faults Rioja Moyobamba. A third, less important source is the one that causes earthquakes at depth levels between 71 and 300 km.
These earthquakes have presented their foci at depths of the order of 120-250 km and magnitudes that have not exceeded the value of 7.5 Mw, rarely being felt on the surface with sufficient intensity to cause damage. The earthquakes, here it originates from the internal deformation of the Nazca plate that moves below the Andean Cordillera.
