A earthquakealso know as shaking either earthquakeis a sudden movement of the Earth caused by the release of energy accumulated over a long time.
They can occur anywhere in the world, but they are more common at tectonic plate boundary areas. Mexico is located in an area of high seismic activity, so it is prone to earthquakes. We tell you where the sound of your alert comes from and who invented it.
What is the seismic alert and how does it work?
Seismic warning is an early warning system that can provide people with notice of an impending earthquake.. This notice can help people protect themselves and take steps to reduce the risk of injury or death.
This system works by measuring the P waves, which are the first waves that propagate during an earthquake. These waves are slower than S waves, which cause the most damage.
When the seismic alert system detects P-waves, it sends a warning to people in the affected area. This notice can be received through cell phones, radios and other devices.
The warning time varies according to the distance to the epicenter of the earthquake.either. In the case of an earthquake that occurs near Mexico City, the warning can go up to 1 minute before the S waves reach the area.
Seismic warning is an important tool for seismic risk reduction. However, It is important to remember that the seismic alert is not a guarantee of safety. People still need to be prepared for an earthquake and follow the instructions of the authorities.
In Mexico, the seismic alert system is operated by the National Center for Disaster Prevention (CENAPRED). The system covers the entire country and is connected to more than 900 seismological stations.
When and how was the seismic alarm invented in Mexico?
In 1991. In the first instance, The system was called the Mexico City Seismic Alert System (SAS) and was developed by the Center for Seismic Instrumentation and Recording (CIRES) of the National Autonomous University of Mexico (UNAM).
It was made up of 12 seismological stations located on the Guerrero coast, from Papanoa to the Ometepec area. The system was able to detect P waves (which are slower than S waves and therefore cause more damage).
The SAS issued its first alert on September 14, 1995, prior to a magnitude 7.3 earthquake that occurred off the coast of Guerrero. The advisory allowed authorities to evacuate buildings and take other protective measures, which helped save lives.
Currently, the SAS has been replaced by the Mexican Seismic Alert System (SASMEX), which covers the entire country. SASMEX uses a network of more than 900 seismic stations to detect P-waves. The system is capable of providing warning to people up to a minute before S-waves reach the area.
How does the Google seismic alert work?
Google Earthquake Alert is an early warning system that can provide people with warning of an impending earthquake. The system uses a network of seismic sensors to detect P waves.
When the sensor network detects P-waves, it sends a notice to Google. Google uses this advisory to calculate the magnitude and location of the earthquake. Then, Google sends an alert to Android devices in the affected area.
Google’s seismic alert is available in more than 40 countries, including Mexico, the United States, Japan, Italy, Turkey, and Chile. The system is in constant development, and Google is working to expand its coverage to more countries and improve its accuracy.
Some tips for using Google’s seismic alert are:
- Make sure that your Android device has the seismic alert service activated.
- Keep your device up to date with the latest software version.
- In case of an earthquake, follow the instructions of the authorities.
Who set the seismic alarms in Mexico?
The team from the National Center for Disaster Prevention (CENAPRED) in Mexico developed a seismic alert system that uses a network of seismological stations to detect P waves. These stations are located throughout the countryand are connected to a central processing center.
the system of alert seismic has been successfully tested on several occasions. In 2017, the system alerted people to a 7.1 magnitude earthquake that occurred in Puebla and Morelos. The warning helped save lives as people had time to protect themselves before the S-waves arrived.
The CENAPRED team was led by engineer Juan Manuel Espinosa Aranda, who is considered the father of the seismic alert in Mexico.
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