access data and messages from Internet users to help in the localization of earthquakes. Experts combine these data with the records of seismic stations, you can tell on average about a Minute faster, where an earthquake has taken place.
an international team of researchers reported in the journal “Science Advances”. Authorities and the Public would quickly know where the earth shook to be able to effectively respond to organizing aid actions.
earthquakes are typically recorded by seismic stations all over the world. The German research centre for Geosciences (GFZ) in Potsdam operates, for example, an earthquake-Monitoring service, based on data from hundreds of private seismic stations of the network, Geofon, and about 800 other stations. “For the reliable localization of an earthquake requires data from multiple stations”, explains Joachim Saul from the GFZ, who was involved with two other GFZ researchers in the study. “You have to exclude the possibility that it has not acted in a Signal, for example, only a local vibration.” It usually takes about three to eight minutes, up from the supplied data is calculated, where an earthquake in which the starch has taken place.
the experts Are sure that there has been an Earthquake, post your information and forward it to the European-Mediterranean Seismological Centre (EMSC). This disseminates the information on its own website, an App, and via Twitter.
The researchers, under the direction of Robert Steed from the EMSC wanted to examine whether the localization of an earthquake can accelerate, when you pull data from the Internet. They took advantage of the access data to the EMSC website and its earthquake App, and crawled the short message service Twitter for Tweets containing the term earthquake – in 59 languages. After a quake, a lot of people today for the cell phone to report in the social media of your experience and to share their experiences.
Overall, the researchers analyzed data on more than 1500 earthquakes from the period between the 1. January 2016 and 31. December 2017. The analysis showed that the data were in the localization with the help of the Internet, on average, more than a Minute faster than if you had used only the data of the seismic stations.
“The results are exciting and Geofon relevant, because it involves the reaction of people who have felt an earthquake even immediately,” says Joachim Saul from the GFZ. “But this is just the beginning of a development. Particularly the accurate determination of the Earthquake magnitude remains a challenge.”