The Taiwan earthquake triggered “plate displacement”! There is a big difference compared to 9 years ago: I hope to stay away from mainland China | Life | Sanli News Network SETN.COM

Life Center/Reported by Liang Xueting

▲After a magnitude 7.2 earthquake occurred in Hualien on April 3, aftershocks continued. (Photo/reproduced from Central Meteorological Administration)

Earthquakes occur frequently in Taiwan. A major earthquake with a magnitude of 7.2 occurred in Hualien on April 3. Earthquakes with a magnitude of 6.0 and 6.3 occurred consecutively at about 2 a.m. on the 23rd. Another earthquake with a magnitude of 5.1 occurred at about 3:19 a.m. and a 5.1 earthquake at 5:24 a.m. An earthquake measuring 5.2 on the Richter scale broke out, with aftershocks continuing into the night. However, the Land Surveying and Mapping Center pointed out that since the Hualien earthquake on April 3, the Taiwan Plate has shifted somewhat. As early as 2022, the Central Meteorological Administration also released displacement charts from 2009 to 2018.

▲The Central Meteorological Administration pointed out in 2022 that large earthquakes will cause significant surface displacement. (Photo/reproduced from Central Meteorological Administration)

As early as October 31, 2022, the Central Meteorological Administration Facebook fan page “Report Earthquake-Central Meteorological Administration” published a post, revealing that more than 160 “Global Navigation Satellite System” stations have been built across Taiwan, combining various units As a result of the construction, Taiwan has more than 450 continuous observation stations to conduct geodetic surveys and establish a database of Taiwan’s geodetic deformation. By monitoring the deformation of the earth, geoscientists can monitor faults, volcanic activity, and how the earth subsides or slides.

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The Central Meteorological Administration pointed out that from the surface, large earthquakes will cause obvious surface displacements, such as the dislocation of the Chelungpu fault, which brought a violent 105-kilometer-long scar to Taiwan’s surface. The horizontal displacement ranges from 1 meter to 9 meters, and in Dajia River, there is a waterfall landscape with an uplift of the earth’s crust and a drop of 5 meters. In addition to “coseismic slip” that occurs in just tens of seconds during earthquakes, faults also “secretly” move before earthquakes (interseismic periods) and after earthquakes (post-seismic periods)!​

The Earth Science Department of the middle school said that earthquakes are the result of a compressed plate that releases energy and generates displacement in a short period of time as stress accumulates. However, the earth’s crust not only moves during earthquakes, but also in the process of “accumulating energy” in the earth’s crust, there will be very slight deformations on the surface, or small, inconspicuous earthquakes. Earth scientists use this principle to continuously monitor every move on Taiwan’s surface for a long time, hoping to find signs before a major earthquake occurs!

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Although mature earthquake prediction technology has not yet been developed, the micro-deformation data of the surface collected before, during and after earthquakes can allow earth scientists to better understand the pattern of crustal movement, or analyze the occurrence cycle of earthquakes and calculate Earthquake hazard potential, assessment of fault activity and earthquake mechanisms across Taiwan.

The Earthquake Forecasting Center of the Central Meteorological Administration used Gamit to draw a schematic diagram of Taiwan’s absolute velocity field/relative velocity field from 2009 to 2018. Netizens left comments such as “Let’s see if we can get farther away from China. The further away the better” and “I hope to go to Japan.” Move in the right direction and stay away from the evil neighbor next door.”