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This post was last edited by yunrun on 2019-11-7 at 18:02. At 1:56 on October 28, an earthquake of magnitude 5.7 struck Xiahe County in Gannan Tibetan Autonomous Prefecture, Gansu Province. According to available information, as of now 21 people have been injured, and the homes of 2,097 households have been damaged to varying degrees; local authorities are carrying out various inspection and rescue efforts in an orderly manner. The earthquake occurred in the southeastern Gansu region, an area with high geological activity. The results of the seismic source mechanism analysis are consistent with the characteristics of regional tectonic movements, indicating that the earthquake was caused by regional stress. Earthquakes have always been serious natural disasters that threaten human health and safety. Global agencies have been actively researching ways to conduct monitoring, issue reports, and provide early warnings for earthquakes, and how to effectively reduce the damage caused by them has become a key issue of concern. Installing earthquake early warning monitors in areas prone to earthquakes can achieve the effect of earthquake early warning. The principle behind this is quite simple: it takes advantage of the fact that radio waves travel faster than seismic waves. This allows for early earthquake warning alerts to be issued before seismic waves cause damage to humans and the environment. In the decade following the Wenchuan earthquake, our country became the third nation, after Japan and Mexico, to possess earthquake early warning capabilities; to date, a seismic early warning monitoring network covering 2.2 million square kilometers has been established. In our country, significant scientific achievements have been made in the development of automated instruments for earthquake monitoring: the high-sensitivity hydrogen-based earthquake predictor is an instrument with a sensitivity of one part in a hundred billion to hydrogen, developed by a research team led by Wang Weixi, a renowned expert in gas sensing, professor at China University of Geosciences, and doctoral supervisor. The new AETA multi-component seismic monitoring system is a monitoring system developed by Professor Wang Xinan’s team at the Shenzhen Seismic Monitoring and Prediction Technology Research Center of Peking University. It is capable of detecting precursory seismic signals such as ‘earth sounds’ and ‘electromagnetic disturbances’, thereby enabling earthquake prediction. The launch of the satellite Zhang Heng-1 has enabled scientific instruments such as high-precision magnetometers, inductive magnetometers, electric field detectors, and high-energy particle detectors to more effectively observe electromagnetic information related to seismic activity, thus establishing an integrated three-dimensional seismic monitoring system. “The “72-hour golden period” refers to the 72 hours after an earthquake; it is called “golden” because this time frame represents the best opportunity to rescue those trapped. How to effectively use professional instruments and equipment to rescue trapped individuals and accurately locate them beneath layers of rubble has always been one of the challenges in rescue operations. Search and rescue operations require professional equipment and rescue capabilities. In the landslide disaster that occurred in Maoxian County, Sichuan in 2017, rescue equipment such as life detectors, carbon dioxide detectors, thermal imaging devices, and drone-mounted lidar systems provided the military and rescue teams with accurate information regarding the situation of those in need of assistance. This not only improved the efficiency of rescue operations but also ensured the safety of the trapped individuals. Seismic stations on the ground are of paramount importance for measuring seismic activity around the world, but these instruments are quite rare; as a result, they are unable to provide complete records of information related to earthquakes in some cases. Furthermore, sometimes earthquakes occur in more complex ways that cannot be accurately measured using seismographs; therefore, earthquake experts usually employ another measurement method—geodetic methods. This measurement method involves using mathematical techniques to study changes in the Earth’s shape, and then employing satellites or specialized instruments to refine the data collected by seismometers. The advancement of scientific research and technology has led to continuous improvements in the precision and sensitivity of instruments, which will enable better protection against the hazards caused by earthquakes in the future. Source: Digital display instruments http://yunrun.com.cn/product/