Xi Evening News (Reporter Wang Li, intern Liu Xiaojin) Yesterday, the earthquake consultation telephone number of the Municipal Seismological Bureau was greatly reduced compared with that when the earthquake occurred, but there were still more than 700 consultation telephones. Most citizens ask "whether there are aftershocks in Xi 'an" and "how much impact the aftershocks have on Xi 'an". The reporter learned from the Municipal Seismological Bureau that as of 3 pm yesterday, 24 people died in our city due to the earthquake, most of them died because of the collapse of the wall.
In response to the online rumor that "Wenchuan earthquake will be transferred to An", the reporter specially interviewed Wang, deputy director of the Municipal Seismological Bureau. Wang said that according to the earthquake law, earthquake migration will occur along the earthquake zone, usually in the same earthquake zone. Wenchuan is located at the intersection of the North-South seismic belt and the Kunlun Mountain seismic belt, while Xi 'an is not in the same seismic belt. Therefore, in theory, there should be no "Wenchuan earthquake moved to Xi 'an". At the same time, judging from the earthquakes that have occurred in history, there are few earthquakes that cross the earthquake zone. Even if there is another earthquake in Wenchuan, the probability of aftershocks hitting Xi 'an is very low. There is no scientific basis for the statement that "Wenchuan earthquake will advance to Xi 'an".
Wang said that a main earthquake occurred in Wenchuan on May 12, and aftershocks may occur in the next few days. However, both intensity, energy and frequency show an attenuation trend. Therefore, the aftershock of Wenchuan earthquake will have much less impact on Xi 'an than on 12. In addition, theoretically, the earthquake decays by one level every 100 km, and Xi 'an is more than 600 km away from Wenchuan. When the aftershock reaches Xi 'an, its intensity and energy will be greatly reduced. Therefore, the public need not worry.
Huashang Daily: In response to the statement that the source of the Wenchuan earthquake moved to the northeast, experts said that the aftershock trend needs to be dynamically tracked.
In response to the statement circulating on the Internet that "the source of the Wenchuan earthquake moved to the northeast", the State Seismological Bureau of China said that it had noticed the aftershock movement, but it was unlikely that an earthquake of magnitude 7.8 or above would occur in the future.
After the Wenchuan earthquake, many netizens are very concerned about what may happen in the future. At 6 o'clock in the afternoon of June 5438+03, the netizen "Lao Ai" posted a message in the forum of Iron Blood reminding "people in northern Sichuan but in Shaanxi and Gansu should be careful", and quoted the latest earthquake forecast of official website, the US Seismological Bureau, saying that "the source of Wenchuan earthquake moved to the northeast.
According to the website provided by the poster, the reporter then found the "preview map" used by the Seismological Bureau of the United States on its official website. However, according to the explanation and tips at the bottom left of the picture, the reporter noticed that the location of 38 earthquakes that have occurred in the past week was marked in the picture. The detailed information of each earthquake obtained by clicking the box in the picture shows that the earthquakes recorded in the picture did not occur from southwest to northeast in turn, so it can be judged that this is not the "latest earthquake prediction" picture.
In response to the controversy of netizens, the network monitoring expert of China Seismological Bureau said yesterday that he had noticed the trend of aftershocks. Judging from the aftershocks that have occurred in Wenchuan at present, it is very unlikely that an earthquake of magnitude 7.8 or above will occur in the future, but to judge the development trend of future earthquakes, it is necessary to conduct dynamic tracking in time. The Seismological Bureau of China said last night 1 1 that the magnitude of aftershocks may be weakening, but the specific aftershock trend is still under discussion. According to the Southern Metropolis Daily.
14, May, 2008 17: 30, Xiu Jigang, deputy director of China Seismological Bureau, Zhang Guomin, researcher of Institute of Earthquake Prediction, and Zhang Xiaodong, deputy director of China Seismological Network Center, accepted a joint visit from China Government Network and Xinhuanet, and exchanged information about Wenchuan earthquake in Sichuan with netizens online.
The following is an excerpt from answering questions from netizens:
[Netizen angelagu] I saw a report that there is a ground fissure of more than 300 kilometers underground, heading northeast. Moreover, some netizens quoted the official website information of the earthquake in the United States, saying that there will be aftershocks in the northeast, that is, before Tianshui and Xi 'an in Gansu. Is this news true? ! ! My family is in Xi, and I'm worried! Thanks to the experts!
[Zhang Xiaodong] We can locate aftershocks accurately every time. After the aftershocks, we saw that the distribution of aftershocks was still relatively wide. At present, the aftershock is about 300 kilometers, so this earthquake is very big. According to past experience, if cracks are formed on the surface, they will be longer. But some earthquakes did not break to the surface, the surface was invisible, and the underground was broken. We use the scale of aftershock area to see the scale of rupture. In addition, there is the problem of aftershock prediction. It should be said that research in this field is being done at home and abroad, and these studies are also being practiced at the earthquake site. Some aftershocks can still be predicted, but some aftershocks are unpredictable. The situation of aftershocks after each earthquake is different, and experts need to carefully analyze and study before they can draw a conclusion.
[Shaanxi netizen] Hello! I am a netizen in Baoji, Shaanxi Province, where 28 people have died. In May 10, Huaxi reported the abnormality of Mianzhu toad, but it was interpreted as a message of local ecological improvement. Excuse me, is this related to this earthquake? In addition, there are rumors among the people that the epicenter is gradually moving northward. Please clarify the situation, thank you!
[Xiu Jigang] Interested netizens can go to China Earthquake Information Network, which has pictures of aftershocks. It can be seen that the image distribution still has a range centered on the epicenter.
[Moderator] Some netizens asked, before the earthquake, there were earthquake clouds in Xi Tianshui. Is it related to the Wenchuan earthquake? Please explain the relationship between earthquake clouds and earthquakes. thank you
[Xiu Jigang] Zhenyun has a history of several decades, and some people in our country are following this matter. Earthquake cloud is a cloud anomaly, but the cloud anomaly covers a large area, which may cover the whole country or even other parts of foreign countries, and the time and scale are also very large. After the earthquake, we may think that the earthquake cloud is related to the earthquake, but we can only say that it is far from our actual judgment of the earthquake. But as a research, we still encourage it, because we are looking for its correspondence, because when a big earthquake happens, it will have an impact on the magnetic field and ionosphere of the whole space, and will affect various physical and chemical changes, but we should not overestimate the significance of this large-scale change to our actual short-term and imminent prediction.