地震征兆（Earthquake omen）.doc

地震征兆（Earthquake omen） (1) macroscopic anomalies of earthquakes; The abnormal phenomena of earthquakes that can be directly perceived by the human senses are called macroscopic anomalies of earthquakes. Form macro seismic anomaly diverse and complex, unusual species as many as hundreds of thousands of abnormal phenomenon, can be divided into: groundwater anomalies, biological abnormalities, abnormal, abnormal light, sound, electromagnetic anomaly weather anomaly etc.. 1, groundwater anomalies Groundwater includes wells, springs and so on. The main exceptions are made muddy, bubble, roll, temperature, color, taste, abrupt rise and fall, borehole deformation, a fountain suddenlyexhaustion or gush etc.. People have summed up the proverb about well water changes before earthquakes: Well water is a treasure, an earthquake has its precursor. No rain muddy springs, day risk wells. The water level rises and falls, turns the flowers and bubbles. Some change color, others change flavor. 2, biological abnormalities Many animal certain organs it can feel very sensitive than humans know ahead of some disaster events, such as jellyfish in the sea can forecast storm, the mouse can advance to avoid mine collapse or harmful gas and so on. As for the visual, auditory, tactile, vibratory, and balance organs, which plays a major role, and which serves as an auxiliary judgment, may be different for different animals. The physical and chemical changes associated with earthquakes (vibrations, electricity, magnetism, weather, water radon anomalies, etc.) often cause some sensory organs in animals to be stimulated and react abnormally. If the gravity of a region varies, some animals may feel through its balance organ; a vibration abnormality; the hearing organs of certain animals may be able to sense it. Before the earthquake in the underground rock has been slow daily activities, showing a peristaltic state, and has also strong friction force between the fault plane, so people think that in