Contents of earthquake prevention and disaster reduction

1, earthquake prevention and disaster reduction is to prevent and mitigate earthquake disasters. The main solution is to design a buildin

Contents of earthquake prevention and disaster reduction

1, earthquake prevention and disaster reduction is to prevent and mitigate earthquake disasters. The main solution is to design a building to improve the ability of earthquake prevention.

2. Monitoring method: In the process of earthquake preparation, various abnormal phenomena often appear in geophysics, geochemistry, geology, geodesy, meteorology, biology and other fields. Since Xingtai 1966 earthquake, more than 70 moderate-strong earthquakes occurred in China, and more than 1000 precursory anomalies were recorded. Because the process of earthquake preparation and occurrence is extremely complicated, the earthquake precursors are also rich and varied. After sorting out and studying, these anomalies can be classified as 10: earthquake precursors, crustal deformation, geomagnetism, geoelectricity, gravity, hydrology, geochemistry, dynamics of underground fluids (water, steam, gas and oil), stress and strain, meteorological anomalies and macroscopic precursor phenomena. Seismologists have scientifically monitored the above precursors. Only by comprehensively analyzing and studying these precursors can we capture the information of earthquake precursors.

3. The first seismograph in the world. An instrument for observing and recording earthquakes is called a seismograph. 132 July (the first year of Emperor Shundi Yang Jia of the Eastern Han Dynasty), Zhang Heng invented the world's first instrument for observing earthquakes-the Houfeng seismograph. It has eight directions, and there is a dragon in each direction. There is a copper bead in the dragon's mouth, and there is a toad under each dragon. If there is an earthquake on both sides, the copper beads in the longkou in that direction will fall into the toad's mouth, so that the direction of the earthquake can be measured. At that time, an earthquake in the western region was successfully predicted by using this instrument, which attracted the attention of the whole country. This is earlier than the earthquake history recorded by instruments in western countries 1000 years. Zhang Heng initiated a new era of observing earthquakes with instruments and was known as the father of seismographs.

4. What is earthquake prediction and what are the three elements of earthquake prediction? Earthquake prediction is the prediction of the time, place, magnitude, impact strength and damage vulnerability of earthquakes. Usually, the three elements of earthquake prediction mainly refer to the time, place and magnitude of the earthquake.