Weekly earthquake info 2024.5.19 An earthquake off the coast of Ibaraki Prefecture causes a seismic depth of three, the primary magnitude for this epicenter in 10 months

At roughly 9:55 am on Saturday the 18th, an earthquake estimated at magnitude 4.8 and a depth of roughly 10km occurred with its epicenter off the coast of Ibaraki Prefecture. On account of this earthquake, the best seismic depth of three was noticed in Kashima Metropolis, Itako Metropolis, Namegata Metropolis, Ibaraki Prefecture, Katori Metropolis, and Tako City, Chiba Prefecture.

That is the primary earthquake with a seismic depth of three or greater centered on the coast of Ibaraki Prefecture in about 10 months since July 22 final 12 months. The mechanism of the earthquake is studied as a sort of regular fault with a compression axis working northwest-southeast.

Earthquakes that happen off the coast of Ibaraki Prefecture at a depth of about 50km are sometimes close to plate boundaries, and earthquakes like this one at a depth of about 10km additionally happen infrequently. In 2022, there was an earthquake with a depth of 5 km and a magnitude of 6.0, though it was a bit of removed from the epicenter of this earthquake, with a most seismic depth of 5 decrease.

Close to the middle of this earthquake, the Philippine Sea plate is subducting into the Earth’s plate. The plate boundary is regarded as about 30km deep, and this earthquake occurred deeper than that.

Moreover, the mechanism of the earthquake was a sort of regular faulting, quite than the kind of reverse faulting anticipated at plate boundaries, so it seems to have occurred alongside a- contained in the Philippine Sea Plate.

It was additionally estimated that there was a magnitude 6.6 earthquake in 1968 at a depth of 39 km, and there’s a related mechanism presently.

The federal government’s Central Earthquake Analysis Promotion Workplace says that no adjustments have been noticed on account of the earthquake on Wednesday the seventeenth that will have elevated the Nankai Trough’s mega earthquake potential.

At roughly 2:49 on the fifteenth (Wednesday), an earthquake estimated at magnitude 2.9 and a depth of three km occurred with its epicenter off the coast of the Noto peninsula. On account of this earthquake, the best seismic depth of three was noticed in Shiga Metropolis, Ishikawa Prefecture.

The variety of earthquakes across the Noto Peninsula has decreased considerably in comparison with once they first occurred, with 4 earthquakes with a seismic depth of three occurring in March and April. That is the second time because the starting of Might. There have been no earthquakes with a seismic depth of 4 or greater because the second half of February.

Though the variety of earthquakes felt remains to be excessive, the scenario is such that enormous earthquakes are unlikely to happen.

At roughly 14:18 on the ninth (Saturday), an earthquake estimated at magnitude 4.5 and a depth of roughly 70 km occurred with its epicenter off the coast of Urakawa, Hokkaido. On account of this earthquake, a most seismic depth of three was noticed within the cities of Atsuma, Abira, and Mukawa in Hokkaido, and a seismic depth of two was noticed in Sapporo, Chitose, Iwamizawa, Hakodate, Mutsu , Aomori, and different areas. .

That is the second earthquake this 12 months with a seismic depth of three or greater that occurred off the coast of Urakawa on the twenty eighth of final month. The mechanism of the earthquake is studied as a sort of reverse fault with a stress axis working northwest-southeast.

On this area, the Pacific plate subducts beneath the Earth’s plate, and enormous earthquakes happen incessantly. Extra just lately, in 2016, an earthquake occurred with a magnitude of 6.7 and a most seismic depth of slightly below 5, and in 1982, an earthquake occurred with a magnitude of seven.1 and a most seismic depth of 6 (class on the time).

In response to an evaluation by the US Geological Survey, no earthquakes with a magnitude of 6 or greater have occurred. The most important earthquake occurred within the Kermadec Islands with a magnitude of 5.9.

This time we’ll deal with an earthquake that occurred within the Caribbean Sea close to Puerto Rico. On the morning of the fifteenth (Wednesday) Japan time, an earthquake with a magnitude of 5.6 and an estimated depth of about 7 km occurred with its epicenter within the waters northwest of Puerto Rico. The mechanism of the earthquake is studied as a sort of regular fault with a compression axis working north-northwest to south-east-south.

To the north of Puerto Rico is the boundary between the Caribbean plate and the North American plate, an space the place earthquakes with a magnitude of 6 or extra typically happen. Extra just lately, a magnitude 6.0 earthquake in 2019 was close to the middle of this earthquake, and there’s additionally a report of a big earthquake with a magnitude of seven.7 in 1943.

On the evening of the fifth (Friday, Japan time), an earthquake that was estimated to have a magnitude of 4.8 and a depth of about 5 km occurred with its epicenter in New Jersey, close to New York. The earthquake mechanism is taken into account to be strike-slip.

This earthquake is believed to have triggered shaking of magnitude IV on the revised Mercalli depth scale, even in central New York. Though a exact comparability just isn’t potential, the shaking corresponds to a seismic depth stage of 1 to 2 on the Japanese seismic depth scale.

Earthquakes are uncommon within the northeastern United States, together with the New York space, and solely 40 earthquakes of magnitude 3 or better have occurred inside 250 km of the epicenter. -average since 1950. Amongst them, this dimension 4.8 is the most important.

As well as, a magnitude 5.8 earthquake that occurred in Virginia in August 2011 is named an earthquake that triggered tremors in New York and different areas.