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The earthquake activity in Alaska is calm in 2024, but more landslides are tracked |
Alaska, one of the most active sites in the world, has just completed a relatively quiet year for earthquakes but a crowded year of landslides in the south, according to an annual report issued by seismic experts at the University of Alaska Ferbanks.
There were 39,836 seismic events in Alaska and the nearby areas in 2024, according to the newly released Alaska 2024 Alaska earthquake.
This is about 5700 less than 2023 and about 15,000 less than 2018, when a record was recorded, according to the center. However, there were 50 earthquakes of 5.0 or more, equivalent to about one per week.
Seismic events are defined as earthquakes or any other phenomena that shake the earth.
The seismic record for this year was noticeable because, for the first time since November 30, 2018, the marina and Matanuska-Sustina earthquake had not been discovered from the subsequent tremors from this event to 7.1.
However, there were more than 1,000 final tremors throughout the year of the 7.8 SIMEONOF earthquake on July 21, 2020, off the Alaska Peninsula, according to the report. The most powerful of them was measured in size 5.6.
The report said that the most powerful earthquakes in 2024 were the events of 6.3 that occurred as part of a group of earthquakes that struck the central Ailtin in early December. The report said that the first earthquakes of 6.3 earthquakes occurred on December 8 in the Andrbanov Islands area, and the second happened the next day.
While there are fewer earthquakes that were discovered in 2024 compared to the past years, a relatively new effort in the center has led to monitoring the landslides in an area that is at risk of great danger: Prince William Sound.
This program uses a set of tools to track the seismic signals of the landslides, which differ from those produced by earthquakes. The seismic discoveries of landslides follow visual affirmation, under the new system.
In 2024, the monitoring system set 31 landslides, including some of the events that produced translated tsunami.
Five separate ground collapses occurred within about an hour on September 20 in the GLACIER surprise, which is located near Harriman Fjord in Prince William Sound. The report said that they produced more than 3.5 million cubic meters of debris, or 4.6 million cubic yards. The report said that they also produced a small but measurable tsunami, at 4 centimeters, or a little more than 1.5 inches.
The report said that this was the first landslide of Prince William Sound with wreckage that has reached water since it began monitoring the landslides designated in the region in 2020.
Tsunami resulted more important than a landslide on August 7 in Pederson Lagoon, southwest of Serad. The report said that it threw about 2 million cubic meters of materials and a local tsunami generation of about 17 meters, or nearly 56 feet, which led to the destruction of the corridors in a local hostel and arrived at the Kenai National Park camp.
The report said that another group of landslides discovered by the tools were in the National Park of Denali. Other slices were discovered elsewhere in South Senteal Alaska, most of which are in coastal areas.
Elizabeth Nadine of the Alaska earthquake center said that the landslides monitoring program is still under development. She said that there is a warning system from a tsunami associated with ground collapse.
The seismic detection program is limited to a radius of about 200 miles, so it does not cover the vast majority of Southeast Alaska. It was not used on August 25 of Ketchikan Landslide who killed one person, wounded three others and damaged many homes.
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Sources 2/ https://www.newsminer.com/earthquake-activity-in-alaska-quieted-a-bit-in-2024-but-more-landslides-are-being-tracked/article_f8baafe0-f4c1-11ef-bbb4-87326c3f72ac.html The mention sources can contact us to remove/changing this article |
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