Earthquake early warning is not about predicting an earthquake, but about providing a quick response to an earthquake that has already occurred. Minimize casualties.
Source: Chengdu High-tech
Setting up your phone's earthquake warning feature may vary depending on the phone model and operating system, but here are some steps to turn on earthquake warning for some common phone brands:
Huawei phones:
- Go to your phone's Settings app.
- Find and tap on the "Security" option in the settings.
- In the security settings, select Emergency Warning Notification.
- Find and turn on the Earthquake Warning feature.
Source: Chengdu High-tech
Xiaomi phones:
- Open your phone's Phone Manager app.
- Find and enter the "Warning Center" in Phone Manager (some are family care).
- Locate and enable the Earthquake Warning feature in the Warning Center.
Source: Chengdu High-tech
Honor Phone:
- Go to your phone's Settings app.
- Find and tap on the "Security" option in the settings.
- In the security settings, select Emergency Warning Notification.
- Find and turn on the Earthquake Warning feature.
OPPO, OnePlus and Realme:
- Go to your phone's Settings app.
- Find and tap on the "Security" option in the settings.
- Then go to "SOS Emergency Contact".
- Enable the "Earthquake Alert" feature in the Natural Disaster Alert.
vivo and iQOO phones:
- Go to your phone's Settings app.
- Find and select the Weather app in Settings.
- Find and enable Earthquake Warning Service in the Weather app.
Source: Chengdu High-tech
Source: Chengdu High-tech
Other mobile phones or smart devices
You can install the earthquake early warning app by yourself to remind you to identify the official one.
Source: Chengdu High-tech
Smart TV
Generally, the latest smart TVs have been pre-set with earthquake early warning functions,Different brands may have different paths,The following takes TCL smart TV as an example
The first step is to find the "Message Box" on the second floor of the TV interface or "My Apps" and open it.
Step 2: Open Settings.
The third step is to turn off the earthquake warning by default, and you can turn it on manually.
Dedicated terminals
Bing Gallery
Pay attention to the earthquake situation of the Earthquake Bureau
If you don't have the conditions to install the app, for example, you can follow the earthquake situation of the Earthquake Bureau at any time on the computer
Please note that the above steps are based on general guidance and may vary depending on the version and model of the mobile system. When setting up the earthquake warning function, it is recommended to operate according to the actual interface and options of the mobile phone. Also, make sure your phone system and related apps are updated to the latest version to get support from the earthquake warning service. If you can't find the option in your phone's settings, it may not be available on your device or region.
What should I do if I receive an alert message?
Source: Chengdu High-tech
The principle of earthquake early warning is mainly based on the propagation characteristics of seismic waves and the rapid transmission ability of electromagnetic waves. The following is a detailed explanation of the principle of earthquake early warning:
- Differences in the type and velocity of seismic waves: There are two main types of seismic waves that occur when earthquakes occur: longitudinal waves (P waves) and transverse waves (S waves). Longitudinal waves are compressive waves that travel vertically and horizontally along the Earth's crust at a faster speed (about 6-7 km/s) but less destructive. Transverse waves, on the other hand, are shear waves, which propagate horizontally only in the Earth's crust and are slower (about 3.2-4.0 km/s) but more destructive.
- Early warning time window: Taking advantage of the difference in the propagation speed of seismic waves, an earthquake early warning system can provide a period of early warning before the transverse waves arrive. When an earthquake occurs, the first thing that arrives at the seismic monitoring station is the longitudinal waves. If longitudinal waves are detected by seismic monitoring equipment in an area, the occurrence of an earthquake can be inferred and its intensity can be estimated.
- Rapid calculations and information dissemination: As soon as longitudinal waves are detected, the earthquake warning system immediately calculates seismic parameters such as magnitude, hypocenter location, and projected ground shaking intensity. The system then uses electromagnetic waves, such as radio, television, or the Internet, to quickly send early warning information to potentially affected areas.
- Warning effect: Since electromagnetic waves travel much faster than seismic waves (close to the speed of light), early warning information can reach the target area a few seconds to tens of seconds before the shear wave arrives. This period is short, but it is critical for emergency response and security measures. During this time, people can protect themselves, such as finding shelter, stopping high-speed trains, turning off gas valves, etc., to reduce casualties and property damage caused by the earthquake.
It is important to note that earthquake early warning is not a prediction of an earthquake, but a rapid response to an earthquake that has already occurred. The timing and accuracy of the early warning depends on the magnitude of the earthquake, the distance from the hypocenter, the propagation speed of seismic waves, and the response speed and coverage of the early warning system. At the same time, for areas very close to the epicenter, the warning effect may be limited due to the small time difference between longitudinal and transverse waves.
Chengdu and its associated institutions have made a number of important contributions to disaster mitigation, and here are some specific examples:
- Development of Earthquake Early Warning Technology:
Chengdu High-tech Disaster Reduction Institute is an important research and development institution for earthquake early warning technology. Founded by Dr. Wang, the institute has developed an earthquake early warning system that can provide early warning to potentially affected areas within seconds to tens of seconds after an earthquake occurs, providing people with valuable time to avoid danger.
- Comprehensive Disaster Reduction Community Building:
Chengdu has built 823 standardized communities (villages) for comprehensive disaster risk reduction, which have strengthened their communities' resilience to natural disasters by upgrading infrastructure, formulating emergency plans, and conducting disaster prevention education, benefiting more than 5 million citizens.
- Disaster Prevention and Mitigation Publicity and Education:
Chengdu actively carried out the publicity activities of "International Day for Disaster Reduction" and "First National Comprehensive Risk Survey of Natural Disasters" to improve the public's awareness of disaster prevention and mitigation and their ability to help themselves and each other through various forms.
- Scientific Research Collaboration and Technological Innovation:
Chengdu High-tech Disaster Reduction Research Institute cooperates with major mobile phone manufacturers, Baidu Intelligent Cloud and other technology companies to use advanced technologies such as artificial intelligence and cloud computing to improve the accuracy and efficiency of disaster early warning, promote the development of multi-disaster monitoring and early warning industry, and empower the emergency management industry.
- Policy Development & Implementation:
The Chengdu Municipal Emergency Management Bureau and other government departments have formulated and implemented a series of disaster prevention and mitigation policies and measures, including risk assessment, emergency plan preparation, emergency drills, etc., to reduce the impact of natural disasters on the social economy.
- Equipment Showcase & Skill Demonstration:
In the theme activity of disaster prevention and mitigation, Chengdu displayed emergency equipment, and carried out emergency skills demonstration and interactive experience for the masses, which helped to improve the public's awareness and ability to use emergency equipment.
- United Front Support:
The United Front Work Department of the Dazhou Municipal Party Committee went to the Chengdu High-tech Disaster Reduction Research Institute to conduct a survey, showing that the local united front supports and pays attention to the disaster reduction work, which helps to integrate the resources of all parties and jointly promote the development of disaster prevention and mitigation.
These contributions are not only reflected in technological development and facility construction, but also include public education, policy formulation, scientific research cooperation and other levels, which jointly improve the disaster prevention and mitigation capacity and level of Chengdu and surrounding areas.
Quotation:
Earthquake early warning science popularization - Chengdu High-tech Disaster Reduction Institute website
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