How warning system help saved lives in China Sichuan Earthquake
Abstract from “Vital Early Warnings Saved Lives in Jiuzhaigou Earthquake” Published on 15 Aug 2017
https://reliefweb.int/report/china/vital-early-warnings-saved-lives-jiuzhaigou-earthquake
A powerful magnitude 7 earthquake that struck China’s central Sichuan Province on 8 August 2017. A crucial factor which helped to save lives was the early warnings through broadcasting and mobile phone applications given to people well before the tremor struck.
According to Science and Technology Daily, people as far as 200 kilometres south of Jiuzhaigou, were given a 40-second warning of the impending danger, while people 95km from the epicentre in Longnan, Gansu province, received 19 vital seconds to prepare and rush to safety.
The early-warning system recognises the fast moving, but mostly harmless ‘P-waves’ created at the start of an earthquake. In its path, far more dangerous ‘S-waves’ follow.
“This technology may change the way we respond to earthquakes. It deserves to be studied closer,” says Gwendolyn Pang. “Yet early warning must go hand in hand with early action. People need to know what to do to protect themselves in times of emergencies.”
Looking ahead, the China Earthquake Administration plans to build 15,000 monitoring stations across the country by 2020, particularly in key areas such as Sichuan, Gansu and Yunnan provinces. So far, there has been about 2 billion yuan (US$300 million) invested in the early warning and quick intensity reporting program.
Reflect on the preparedness measure highlighted in the article.
1. How effective is earthquake monitoring and warning system in mitigating the impacts of earthquake?
2. How effective are the other preparedness measures such as land use regulations, emergency drills and earthquake resistant building design in mitigating the impacts of earthquakes?
China's early earthquake warning system gives people life-saving seconds to prepare.
https://reliefweb.int/report/china/vital-early-warnings-saved-lives-jiuzhaigou-earthquake
A powerful magnitude 7 earthquake that struck China’s central Sichuan Province on 8 August 2017. A crucial factor which helped to save lives was the early warnings through broadcasting and mobile phone applications given to people well before the tremor struck.
According to Science and Technology Daily, people as far as 200 kilometres south of Jiuzhaigou, were given a 40-second warning of the impending danger, while people 95km from the epicentre in Longnan, Gansu province, received 19 vital seconds to prepare and rush to safety.
The early-warning system recognises the fast moving, but mostly harmless ‘P-waves’ created at the start of an earthquake. In its path, far more dangerous ‘S-waves’ follow.
“This technology may change the way we respond to earthquakes. It deserves to be studied closer,” says Gwendolyn Pang. “Yet early warning must go hand in hand with early action. People need to know what to do to protect themselves in times of emergencies.”
Looking ahead, the China Earthquake Administration plans to build 15,000 monitoring stations across the country by 2020, particularly in key areas such as Sichuan, Gansu and Yunnan provinces. So far, there has been about 2 billion yuan (US$300 million) invested in the early warning and quick intensity reporting program.
Reflect on the preparedness measure highlighted in the article.
1. How effective is earthquake monitoring and warning system in mitigating the impacts of earthquake?
2. How effective are the other preparedness measures such as land use regulations, emergency drills and earthquake resistant building design in mitigating the impacts of earthquakes?
China's early earthquake warning system gives people life-saving seconds to prepare.
Updated on 18 Jun 2019
A 6.0-magnitude quake rocked southwest China's Sichuan Province
on 17 June 2019. Many communities and schools in Chengdu City heard
the alarm of earthquake warning 61 seconds before the initial
tremor struck. An early earthquake warning system gave people
vital seconds to escape the danger. The system uses a method
that gives the alert tens of seconds before the arrival of the seismic
waves. While the exact timing of quakes can't yet be predicted, the
early warning system allows people to take immediate action that
could potentially save their lives.
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