The earthquake that hit the city of Sonora, located in Mato Grosso do Sul this Tuesday (13), generated at least 16 more replicas of seismic shaking in the state.
According to the Brazilian Seismographic Network (RSBR), secondary tremors are common and may occur after the main earthquake. The events after the primary phenomenon had low magnitudes between 1.0 and 2.1. The last of the series, until the last publication of the network, would have occurred at 9:20 am on the 13th.
Only in 2025, Mato Grosso do Sul has recorded nine seismic shakes, with magnitudes between 1.6 and 3.5.
The 16 replicas series was analyzed by the USP seismology center. According to José Alexandre, seismologist at the center responsible for the land tremors bulletin, the main earthquake occurred 100 kilometers of sound (MS).
He pointed out that occurrences are relatively common in the Pantanal region. According to Joseph, in March this year, for example, Poconé recorded an earthquake of magnitude 4.4.
Remember the last tremors in MS
Two earthquakes have been recorded in the last 24 hours in the state of Mato Grosso do Sul.
According to the Brazilian seismographic network (RSBR), both tremors occurred near the municipality of Sonora (MS). The first was recorded at 00h41, this Tuesday (13), and had the preliminary magnitude calculated in 3.5. Already the second happened at 9:20, with a magnitude of 2.1.
According to RSBR, the last tremor that took place in the state was in Miranda, on April 28, with a magnitude of 1.6.
There are still no reports that events have been felt by the local population.
Understand the Richter scale
Scientists use the “scale of magnitude of the moment” to categorize the strength and size of earthquakes in a more accurate way than the “Richter scale”, used a long time ago, says US geological service.
This scale of magnitude of the moment is based on the “seismic moment” of the earthquake, which explains how the earth’s crust moves in an earthquake, the size of the area along the crust fissure and the force needed to overcome friction in that place, along with the seismic waves that change creates.
*Under supervision by Carolina Figueiredo
This content was originally published in ms tremor in MS generates 16 other shakes in the state on CNN Brazil.
Source: CNN Brasil

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