To facilitate public and business acceptanceEarthquake warningInformation services, now publishedHainan provinceThe existing seismic early warning information services are guided by the following:
I. What's an earthquake warning
Earthquake warning is a rapid warning to areas where destructive seismic waves have not yet reached, taking advantage of the characteristics of seismic wave transmission, which is much less rapid than that of electromagnetic waves. There are limitations to early warning of earthquakes, such as the blind zone of early warning, which cannot be provided within 20-30 km of the earthquake。
Ii. Strategy for the dissemination of early warning information on earthquakes in hainan province
1. Earthquake warning level 3 or seismic prediction 4 degrees and above within 200 kilometres of hainan province and surrounding areas;
2. Earthquake warning level 4 or seismic prediction of 5 degrees and above within 200-400 kilometres of the vicinity of hainan province;
3. Earthquake warning scale 6 or earthquake predictions of 8 degrees and above, occurring 400 kilometres from the vicinity of hainan province。
Iii. Warning levels for earthquake warning
Based on the magnitude of the projected seismic intensity, seismic warning levels are divided into four levels, marked by red, orange, yellow and blue. Red warning indicates a projected seismic intensity of seven degrees and above, orange of five degrees, six degrees, yellow of three degrees, four degrees and blue of less than three degrees. Zenium
Channels for receiving earthquake early warning information
1. The public
(1) mobile phone warning. The use of twitter to search for the hainan seismic station applet and the associated settings will allow mobile phones to access early warning information for earthquakes. Early warning information from the hainan earthquake station is received when the site of concern predicts an earthquake strength of 2 degrees (2 degrees of slight sensing). Early warning sound alerts are enforced when the focus site predicts an earthquake of 5 degrees (five degrees strong) and even if the cell phone is out。
(2) seismic early warning specialized terminal. Earthquake early warning messages are released through dedicated earthquake early warning terminals located in densely populated locations such as schools, hospitals, communities, etc., and are displayed through sound alerts, showing seismic early warning levels, warning times, etc。
2. Industry (professional) users
Industry (professional) users can apply to the relevant department of the hainan earthquake department (contact: 0898-65334744). The seismic bureau of hainan province will provide customized earthquake early warning information services in accordance with relevant legal and technical standards. Information value-added services involving non-public-interest institutions are negotiated according to the content and modalities of the services。
