At 23:59 on December 18, the National ** Bureau issued the latest notice, and after detailed investigation and analysis, it has been confirmed that this time it occurred in 6Grade 2** is a shallow source of reverse fault type**. It is speculated that the seismic fault of this ** may be a fault on the northern margin of the north-north-west-trending Lazhi Mountain.
The epicenter of this ** is located in Jishishan County, and the depth of the epicenter is shallow, only about 8 kilometers. Although the magnitude of the earthquake was relatively high, the intensity of the earthquake near the epicenter was not too high and belonged to the range of minor damage.
However, the impact is still significant. Local residents felt strong tremors and jolts in **, and many buildings also suffered varying degrees of damage. At present, the local ** is actively organizing rescue and recovery work to ensure that the people in the affected areas can resume normal life and production as soon as possible.
In order to better understand the causes and future development of the region, the National Bureau will continue to strengthen the monitoring and research of the region. At the same time, it is also hoped that the general public can actively cooperate with the work of the first class, do a good job in their own protection and safety measures, and jointly respond to the challenges of natural disasters.
From a topographical point of view, the Gansu-Qingdao border area where Jishishan County is located is located in the transition zone between the Loess Plateau and the Qinghai-Tibet Plateau. The terrain of this region is complex, with high mountains and deep valleys, ravines and rock formations. In such terrain conditions, once a ** occurs, the wave will propagate through the rock formations, causing more extensive damage. In addition, due to the presence of thicker soft sediments in the area, these sediments are prone to site amplification effects, making them more destructive.
The terrain of the high mountains and deep valleys in the area is also very prone to geological disasters. When ** occurs, geological disasters such as landslides and debris flows will further aggravate the degree of damage. These geological disasters will not only directly cause loss of people and property, but also block traffic and affect the transportation of rescue and materials.
Also, late at night in winter is the worst time to happen. During this time period, the temperature is lower and the surface soil freezes, making the **wave more rapid and widespread. At the same time, since people are usually asleep at this time, the reaction speed is slower, which also increases the risk of personal and property damage caused by **.
To sum up, the topographic conditions, geological environment and time period of occurrence in the Ganqing border area where Jishishan County is located have increased the destructive power of the mountain. Therefore, in the face of the first shock, we need to be more vigilant and cautious, strengthen the first monitoring and early warning work, and improve the public's awareness of earthquake prevention, so as to reduce the losses caused by the first earthquake.
In addition, although there is no shortage of major earthquakes in the history of Gansu and Qinghai, Linxia Prefecture, where Jishi Mountain is located, is relatively less active, and there has never been a level 6 or higher since the founding of the People's Republic of China, mainly affected by the surrounding field earthquakes, the last time there was a magnitude 3 ** in Jishishan County was in 1998, and the most recent destructive ** in the surrounding area was 250 kilometers away in 2022 Menyuan 6Level 9**, so for the locals, this **is the largest ** they have ever experienced**, and there is less experience in earthquake resistance, and some old houses in the countryside and houses with poor earthquake energy are in 6Level 2 ** is very difficult to carry in front of you.
It can be said that this ** is like a merciless attack, which has befallen the most vulnerable places at the worst time (midwinter midnight). It is as fierce as a beast of prey, destroying people's homes without mercy. We deeply mourn and may the departed rest in peace and the living strong. However, in this catastrophe, we also see the brilliance of humanity. Rescue workers and volunteers have emerged, regardless of their personal safety, bravely moving forward to bring warmth and hope to the people in the disaster area. We are moved by their bravery and selflessness. Now, we need to unite and work to rebuild the homes of the people in the affected areas. Let's work together to help them in the best way we can to bring this land back to life. Let us observe a moment of silence for the deceased, cheer for the living, and pray for the blessings of the people in the disaster area. May they come out of the shadows and rebuild their beautiful homes as soon as possible!