The Noto Quick 3D model adds the dimension to understand the dynamics of the earthquake

Scientists used super computers to detect the basic mechanism through which irregular rift engineering, which is characterized by multiple diversity, controls the contrast of the rift and the resulting rise. The variation of height from 1-2 meters in some areas, to up to 4-5 meters in others. Credit: Ryosuke ando, Tokyo University

On New Year's Day 2024, a huge earthquake of 7.5 degrees Noto Peninsula struck in the north of central Japan, causing widespread damage to the area caused by the height, when the Earth rises due to the change of tectonic panels. However, the noticeable height varied significantly, as some areas suffer from a height of 5 meters on the surface of the earth.

To better understand how the characteristics of rift lines affecting earthquakes, researchers in Japan used recently developed simulations to create a detailed error model. Results can help develop models to simulate various earthquakes and reduce disasters in the future.

The results were published in the magazine of Earth, Planets and Space.

“During the Noto Peninsula, we saw a devastating up in some areas compared to other regions,” said Riosok Ando, ​​associate professor at the Graduate School at Tokyo University, author.

The researchers wanted to develop a model for an earthquake in 2024 based on previous research and used note data obtained before the earthquake occurred, such as the characteristics of the relevant errors and seismic activity that precedes the devastating earthquake.

If the rift-based simulator in the real world can accurately design what happened during the earthquake, it will help researchers understand how rift engineering-which describes properties such as shape, orientation and different angles (including what is known as Dip and Strike) and the movement of movement (SLIP).

The warmer color areas have witnessed greater weighting during the earthquake. The effects of active breakdowns on the sea floor (heavenly lines) run along the north beach in the Nuto Peninsula. Credit: Ryosuke ando, the University of Tokyo slides the error significantly as the rift slices are perpendicular to the direction of compression stress (green arrows) that work in the tectonic plate because this is the condition when the faults are effective effectively. The consistency with the remarkable surface lifting confirms the validity of the simulation. Credit: Ryosuke ando, Tokyo University

There are three main errors involved in the Nuto 2024 earthquake. They are what are known as interconnected mistakes, that is, errors with the opposite sensation of side movement. Two of them (Monzen and Noto Peninsula Hoku-Gu

Dip refers to the direction of the inclination of error. Note data was used on the effects of the rift (where errors intersect with the surface of the Earth) and the angle of the thief dipped to build a 3D rift engineering model. Data from the previous seismic activity was used to create a model of stress conditions. This area was subject to a local seismic seismic seismology of shallow earthquakes for years before the 2024 earthquake.

The simulation, which was developed with monitoring data from rift engineering, managed to reproduce the contrast in the height that occurred during the Noto 2024 earthquake.

In some areas, height causes severe damage, while the effect in other cases was not severe due to the lower height. Based on the NOTO earthquake model, vertical displacement was concentrated near the effects of the error where the error is deviated locally from its general horizontal direction. This indicates that rift engineering is a key to how the earthquake affects the ground.

“Our simulation with the super computer has enabled the 3D rift engineering analysis, which is formally formed. We have revealed that the rift engineering controls the total process through the attitudes of the relative rift to the pressure force that operates in the tectonic plate in this region,” Ando said.

Looking at the future, researchers consider how to use this model to develop better dynamic rupture scenarios for future earthquakes.

“By showing simulation capabilities with detailed models of rift engineering, we have shown how rift style properties can be restricted before large earthquakes. We expect this conclusion to build a way to evaluate the properties of risk caused by large earthquakes in the future,” Ando said.

More information: 3D non -domestic rift engineering controls spatial temporal distributions and comrades: Directory of MW 7.5 2024 Noto Peninsula, Japan, earthquake, land, planets and space (2025). DOI: 10.1186/S40623-02187-9

It was presented from the University of Tokyo

Quote: Noto Quick 3D Model adds the dimension to understand the earthquake dynamics (2025, April 28).

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