Begin at talking about the fact that it is dizzy when the earthquake

Begin at talking about the fact that it is dizzy when the earthquake
It takes one minute before Wuhan University remote sensing information engineering institute fits 3 11 heavy earthquakes of Japan severely, millions of Japeneses have got the alarm of the TV earthquake. It is reported, the early warning system of this earthquake of Japan is counted the networking made up by about 1000 earthquakes, cover the whole Japan, can be aware and analyze the seismic wave, and send out the warning when the earthquake is counted to predict that it is strong to shake. The all right prewarning of the earthquake is not equal to can predict prewarning and predict it is differentiated, the mankind can't predict the time, place and intensity of the earthquake accurately yet at present, but once the earthquake takes place and can carry on prewarning. This is because there are two time differences. The earthquake produces and destroys p wave with small strength while taking place " Run " Fast,it prior to which destroy getting older in strength s wave measure for arriving,there are one of time differences on this; After measuring to p wave, sends this information through electric wave out, and the electric wave will be more numerous soon than the seismic wave, these are the second time difference. Through these two time differences, some areas will or destroy s wave with strong strength to get prewarning in the seismic wave before reaching. Even if the time difference is not enough to be evacuated by personnel, can rob in front of the seismic wave and take measures of closing the gas, stopping generating electricity etc., thus avoid the secondary disaster. Animal's unusual behavior as everyone knows relates to sound wave once, there are various changes of physics, chemistry and meteorological phenomena such as geothermol power, earth current, terrestrial magnetism, light, sound, groundwater chemical composition more before shaking. Even these changes are very slight, but for animal with very sharp feeling strength, the abnormal state that will all cause their physiology and behavior to have reacts. Studies have suggested, the unusual behavior of the animal relates to second-class sound wave that they experience. Sound wave once is a sound wave that the frequency is lower than 20 hertzs. Generally speaking, the sound wave that the ears of people can accept is among 20~20000 hertzs, though can not see, can't hear sound wave once, but it is ubiquitous. Earthquake, volcano eruption, storm, wave bludgon into and the intersection of arms and launch, nuclear explosion,etc. will produce sound wave once. The second-class sound wave stimulated by earthquake, tsunami has very strong penetrating strength and destructiveness, not merely can penetrate barriers such as the building, shelter, tank, ship,etc., still can destroy the tall and big building. According to a large number of earthquake materials, there are animals that unusually reacted that nearly had nearly 100 kinds before the earthquake, including the insect, fish, frog, snake, birds, beasts, poultry, domestic animal, among them the most obvious by responses such as the dog, fish, cat, chicken, bird and pig,etc., if mouse escape appear and oxen and horses enter, enclose, not great disorder, this caused by strong second-class sound wave before breaking out by the earthquake mainly. Scientific research shows, people's viscera have their inherent vibration frequency, and similar to frequency of sound wave once. When the second-class acoustic frequency that the earthquake produces keeps the same with human natural frequency, will produce the resonance, people will present the abnormal feeling of having a dizzy spell etc.. In a moment as the Sichuan earthquake of Sichuan Wen takes place, although the staff going to work in the skyscraper in many Beijing, Tianjin,etc. have not felt the building is obviously rocked, but it is dizzy to appear for a moment, someone also thought that the hypertension or cervical vertebra disease is had by mistake. If power of the sound wave once is very strong, especially keep the same with inherent vibration frequency of the cranial cavity with people's abdominal cavity, thorax, will produce the resonance, symptom of presenting vomiting with viscera, brain,etc. without end, dyspnea, muscle convulsion, mentally deranged etc., can jeopardize the life because the viscera blood vessel breaks when being serious. Strengthening sound wave once can reduce big acoustic energy once of loss earthquake to monitor, spread far, it is the main physical quantity causing the earthquake to destroy. Because the heavy earthquake of overwhelming majority is in several minutes several days before taking place, there is subaudible and unusual the either large or small one, so people can predict earthquake, tsunami with very great destructiveness by receiving sound wave once. Generally speaking, the above- seventh -class earthquake can measure acoustic signal once unusually before shaking. So the intersection of calamity and times of sound wave of earthquake monitor pre- the intersection of police and application of law, make good result too. The principles of acoustic detecting devices once of earthquake are simple, the cost is extremely cheap. If occur frequently in the area in the earthquake, contact the few cities and towns with the wild animal, put or embed a large number of second-class acoustic monitoring instruments; Or acoustic monitoring instrument once will equip on the earthquake-prone zone " The new electrical home appliances " ,Can play a early warning role before shaking, probably reduce casualties greatly. (Xu HuiZhen puts in order)

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