From the end of July to October 2022, residents of the Manois Islands in American Samoa felt the concussion of the Earth several times a day, which caused fears about the inevitable eruption of the volcano or tsunami, which was about to fall on them, writes Phys. Org.

The catalog of earthquakes in this region did not give anything, since there was no seismic monitoring system on the islands, which could measure underground shocks and help seismologists in search of a royal earthquake source.

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However, the inhabitants of the Pacific Islands Tau, OFO and Oloseg need answers. To find the cause of the underground shocks of Clara Yong with colleagues from the US geological service, they found another way to fill in seismic gaps. During the study, scientists used machine learning and other equipment called templates on data on concussions recorded from one seismic sensor located 250 kilometers from Roy's Samoa.

The team used data from one station in combination with reports of shaking from residents to track the swarm. This continued until August-September 2022, when local permanent seismic stations were not installed in the American Samoa.

It is known that the swarm of the delicious volcanic earthquakes began in July 2022 about 15 kilometers from the shore of the island of Tau. The volcanic islands of Samoa arise when the Pacific Tectonical Plate moves above the hot point in the southern part of the Pacific Ocean.

According to Yun, initially the information was limited to the messages of local residents about frequent shaking occurring several times a day for several seconds. Further, scientists turned to a remote seismic station on Nelo (Samoa), which is part of the global seismographic network, with data that can be loaded in a mode close to real time through the Earthscope data center.

Researchers note that a seismic signal from a series of earthquakes in American Samoa was difficult to detect at a remote station. Yun and Colleagues used a deep learning model called EQTRANSFORMER, as well as a method called the comparison of templates to highlight these tiny earthquakes from a noisy seismic background.

The model has discovered a large number of earthquakes with locations corresponding to the eastern part of the American itself, the largest of which coincided with the time of felt messages. As a result, scientists were able to characterize the beginning and peak of the activity of the swarm. Raspberry Shake portable and inexpensive sensors, deployed in August 2022, helped to quickly determine the swarm of the swarm.

The data also showed that the largest earthquake in the swarm of American Samoa had a magnitude of 4.5.

The data indicate that the swarm ended in October 2022 without eruption, but was probably associated with the movement of volcanic magma. According to Yun, the method used in the study can be useful in other places around the world where constant seismic monitoring is rare, and seismic danger is poorly studied.

Previously, Focus wrote that in the next 30 years a catastrophic megacle market can occur on Earth.