The effectiveness of the earthquake warning system was confirmed again

In recent days, the effectiveness of earthquake early warning systems has once again been demonstrated. This morning, a powerful 8.1-magnitude earthquake struck off the coast of Chile, with the epicenter located in the ocean. The city of Iquique, in northern Chile, is less than 100 kilometers from the epicenter and could potentially trigger a tsunami, prompting people to flee to higher ground. Just a few days earlier, on the 28th, a 5.1-magnitude quake hit the town of La Habra, near Los Angeles in southern California. Fortunately, the early warning system managed to send out a notice four seconds before the shaking began, giving residents precious time to take cover and avoid potential disasters. According to the *Los Angeles Times*, the quake occurred at a depth of about 7.5 kilometers. In Pasadena, seismologists detected the tremor just before it hit and issued a warning, confirming the effectiveness of the prototype system being tested by the U.S. Geological Survey. Lucy Jones, a seismologist with the agency, explained that the system works because seismic waves travel at the speed of sound, while the early warning detectors can transmit data at the speed of light. This allows for timely alerts, even for those far from the epicenter. Earlier this year, in March, a 4.4-magnitude earthquake hit near Westwood in southern California, and the warning system also issued a two-second alert. These small but crucial moments can make a big difference in preventing injuries and saving lives. For our country, real-time ground motion monitoring and rapid intensity reporting are still in their early stages. Historically, the focus of earthquake monitoring systems has been on instrument performance and station construction, rather than on rapid response capabilities. As a result, there is limited support for emergency response, disaster relief, and risk reduction. However, if we deploy more acceleration sensors in high-risk areas, we can quickly provide real-time information on earthquake intensity distribution, which is essential for saving lives and maintaining social stability. Over the past two years, Japan has used speed and acceleration sensors to quickly report ground motion intensity after earthquakes. In Yokohama, nearly 1,000 intensity meters have been deployed to monitor seismic activity. It is hoped that China’s seismic detection technology will continue to develop alongside advancements in sensor technology, enabling better monitoring of secondary natural disasters such as landslides and mudflows following earthquakes. Sensors play a key role in collecting critical data, but large-scale sensor networks do not guarantee accurate or timely earthquake predictions. Their main function is to analyze regular data and monitor conditions after an earthquake. Nevertheless, sensor technology holds great promise for future earthquake monitoring and disaster prevention efforts. Earthquake observation is also a fundamental part of our country's disaster prevention strategy. Seismic monitoring provides the basis for earthquake preparedness and risk reduction. In Hebei alone, there are 33 seismograph stations and 109 unattended stations, most of which are located in remote mountainous areas to minimize interference. Over 200 professional technicians work year-round, often in isolation, using methods like seismic, electromagnetic, deformation, and fluid observations to track changes in the geophysical field. Their dedication has made significant contributions to earthquake prevention and disaster mitigation.

LED Inground Light

Model	DC 12 24V A	C 85-265V
LED Brand	CREE	EPISTAR
LED Quantity	1-36PCS	OEM ODM
Rated Power	1W 3W 5W 7W 9W 12W 15W	14W
Input Voltage	DC24V/AC100-240V,50/60Hz
Color Temperature	RGB/Single	RGB/single
Beam Angle	5°/8°/12.5°/20°/30°/ 45°/60°/15*30°/10*60°
Contrl Mode	DMX512/CC	DMX512/CC
Protection Grade	IP67	IP67

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