Recently, the video of the blogger "Yamatori Painting Materials" twice going to Ailao Mountain alone to collect materials continues to attract attention. Many netizens were amazed by the thrilling picture presented, and some said that "it feels like watching an adventure horror movie".
On October 5, "Ailao Mountain has the phenomenon of abnormal geomagnetic field strength" appeared on Weibo hot search. The Red Star News reporter noticed that the self-media account "Mr. Tan's Geography Studio" published an article entitled "What is Ailao Mountain? Why Ailao Mountain is a "forbidden area"" was extremely popular after being quoted by many media.
▲Nanen Waterfall in the Ailao Mountain Scenic Area. Photo according to Visual China
The operator of "Teacher Tan's Geography Studio" said in an interview with a Red Star News reporter on the 5th that he is a middle school geography teacher, and although the relevant content of Ailao Mountain is posted under his account, the original text was not written by him, and the relevant content is also spread on the Internet.
Tang Xiaochun, a professor and doctoral supervisor at the School of Geography and Tourism of Guangdong University of Finance and Economics, told the Red Star News reporter that there are indeed geomagnetic anomalies in some places, which are mainly caused by the strata or rocks with magnetic minerals exposed in this area, which is actually a relatively common thing.
Tang Xiaochun introduced that the most common rock with magnetic minerals is basalt, which belongs to the mafic rock. Specific to the Ailao Mountain area, it should be a large area of exposed basalt. Some areas with strong geomagnetic fields may have a compass malfunctioning, but the compass is not the only way to determine the direction at this time.
Hot article author:
"Abnormal magnetic field strength" comes from the content of the Internet
The main purpose of the post is to remind everyone to be in awe of nature
In recent days, the attention on the Internet about Ailao Mountain has continued to increase, among which the topic of "Ailao Mountain has abnormal geomagnetic field strength" has been on Weibo hot search.
After the Red Star News reporter inquired, it was found that an article from the self-media account "Mr. Tan's Geography Studio" "What is Ailao Mountain? Why Ailao Mountain is a "forbidden area"" was quoted by many media and became extremely popular.
▲Screenshots of related articles (partial)
The article stated that "the anomaly of the geomagnetic field strength has been measured in Ailao Mountain, which leads to the failure of the compass and increases the risk of getting lost." In this regard, some netizens commented that it is no wonder that Ailao Mountain is so mysterious, it turns out that there is a different "magnetic field". But some netizens suspect that this statement is a hype.
On October 5, the Red Star News reporter contacted the operator of the "Teacher Tan Geography Studio", who said that he was a member of the Chinese Geographical Society and a middle school geography teacher. In his spare time, he also publishes articles about geography.
The operator told the Red Star News reporter that the statement in the aforementioned article that "there is an anomaly in the strength of the magnetic field of the earth after the measurement of Ailao Mountain" was not written by him (original), and most of it belongs to the content of the Internet; His purpose in writing this article is to remind people not to venture into unexplored forests.
The operator said that as far as he knows, there is no clear evidence that there is a magnetic field problem in Ailao Mountain, and even if the geomagnetic anomaly has an impact on the compass, it relies more on satellite positioning and other technologies in the field, and this impact is minimal, "The main thing is to remind everyone to respect nature and life." ”
Rescuers of the Missing:
At first, it was suspected that the magnetic field was disturbing to cause the loss
The investigation found no significant geomagnetic anomalies
Three years ago, in November, four geological surveyors went missing after entering Ailao Mountain, and when they were found by the search and rescue team, all four had no vital signs and unfortunately died in the line of duty. Hu Wenkun, president of the Yunnan Mountaineering and Outdoor Sports Association, was involved in the rescue at the time.
Shortly after the search and rescue ended, Hu Wenkun was interviewed by a Red Star News reporter. At that time, he suspected that several geological team members lost contact mainly due to the interference of the local magnetic field. In a situation where the victim was not aware of the danger, hypothermia accidents occurred.
However, in an interview with the Red Star News reporter again on October 5, Hu Wenkun said that his judgment was not accurate at that time. He told reporters that after the incident, several local geological exploration institutes in Yunnan had done research and review, "and found that there was no obvious evidence that there was an obvious abnormality in the geomagnetic field of Ailao Mountain, and the main reason for the death of the geological team was hypothermia."
▲On November 21, 2021, search and rescue personnel marched in Ailao Mountain. Source: Propaganda Department of Zhenyuan County Party Committee, Yunnan
According to Xinhua News Agency on December 15, 2021, after the public security organs conducted a forensic examination on the four geological investigators who died in the line of duty in Ailao Mountain, the four died of cardiogenic shock caused by low temperature, and died of poisoning and mechanical injury. In addition, according to the joint on-site investigation of experts in the fields of public security, geology, meteorology, environment, communications, forestry, and mountain rescue, it is believed that the main reason for the death of the four people was excessive physical exertion caused by long-term mountain climbing, instantaneous strong winds in the area where the incident occurred, and a sudden drop in temperature.
The Red Star News reporter noticed that the above report shows that from the results of the joint on-site investigation, the area where the incident occurred was extremely humid, the temperature changed rapidly, and the microclimate characteristics were obvious, and it was very prone to local heavy rain, instantaneous winds, temperature drops and other bad weather, resulting in long-term fog and extremely low visibility in the primeval forest, which caused great difficulties in determining the direction. Other factors, such as the geomagnetic field, were not mentioned in the report.
In an interview on the 5th, Hu Wenkun said that according to his actual experience, there is no situation where the direction cannot be determined when using a compass in Ailao Mountain. Most of the people who travel in the mountains now use satellite navigation and other facilities. Sometimes the signal is bad, but it doesn't happen in the wrong direction.
However, Hu Wenkun cautioned that for people with no experience in the field, they should never enter undeveloped mountainous areas, "because there are too many dangerous factors in these places, such as wild animals, sudden weather changes, complex terrain, etc., these factors are the main reasons for casualties in mountains and forests like Ailao Mountain." ”
▲Jinshan Primeval Forest Park located in the Ailao Mountain Scenic Area Photo by Red Star News reporter Li Yida
Geologists:
"Geomagnetic anomalies" are caused by rocks with magnetic minerals
Relatively common, without much "mystery"
The Red Star News reporter noticed that after the blogger released the video of entering Ailao Mountain, many netizens thought that he was "targeted by the beast", for this reason, the blogger also responded with a voice "Don't guess, it's all roots", "It's just a record of finding raw materials, the editing has a sense of network, and there are not so many mysterious things". However, the "mystery" of Ailao Mountain is still hotly discussed, and many tourists travel directly to Ailao Mountain.
The Red Star News reporter previously visited the Ailao Mountain Scenic Area and learned that in fact, some areas of Ailao Mountain have been developed into scenic spots, with relatively complete supporting facilities and services, and many tourists come here to play, as long as they do not enter the undeveloped primeval forest area, they will hardly encounter risks.
At the same time, "there is an anomaly in the strength of the geomagnetic field in Ailao Mountain" has also been hotly discussed. In this regard, Tang Xiaochun, professor and doctoral supervisor of the School of Geography and Tourism of Guangdong University of Finance and Economics, said in an interview with a Red Star News reporter on the 5th that there are indeed geomagnetic anomalies in some places, which are mainly caused by the strata or rocks with magnetic minerals exposed in this area, but this is a relatively common situation and does not have much "mystery".
▲Jinshan Primeval Forest Park Photo by Red Star News reporter Li Yida
Tang Xiaochun explained that the most magnetic type of rock is igneous rock, which is formed by the cooling and solidification of magma, which contains a large number of ferromagnetic minerals, such as magnetite, which give igneous rocks extremely magnetic properties. The most common rocks with magnetic minerals are basalt, which belongs to the mafic rock, and basalt is a kind of igneous rock.
Tang Xiaochun said that the strength of the abnormal geodetic magnetic field in a place depends on the amount of magnetic minerals in the rock, that is, the strength of the magnetic properties of the formation. In places with strong magnetism, the general compass will be significantly affected, and in severe cases, the compass will be completely out of order.
"If you only rely on the compass to find your way at this point, you will get lost. But in fact, there are many ways to identify the direction when we go to the field, especially the application of satellite navigation. But even so, for those who have no outdoor experience, it is still not easy to go to undeveloped mountainous areas, especially mountainous areas with dense vegetation, Tang Xiaochun said.
Red Star News reporter Fu Yao intern You Liqin
(Source: Red Star News)