Japanese technology allows early warning of tsunamis

Over the past week, some Japanese residents have felt the quakes of the earthquake attacking the North Pacific region, but those who watch television have seen an alert about tsunami appear a few minutes later. Thanks to that, thousands of people were quickly evacuated to the highlands.

' It is important to evacuate the people before the tsunami hits,' explained Osamu Kamigaichi, who oversees the Japan Meteorological Agency's (JMA) department for monitoring earthquakes and tsunamis.

(Photo: HTV) The goal of the JMA is to issue a tsunami alert from 3 to 5 minutes after an earthquake in Japan or surrounding areas.

The agency spent more time on November 15 to respond to an earthquake measuring 8.1 on the richter scale. The earthquake center is off the Kourile Islands of Russia and is out of control of Japanese detectors. However the first alarm command is only played after 14 minutes.

The Japan Network of Warning Centers is JMA's earthquake and tsunami observation (ETOS) information system monitored 24 hours a day and 365 days a year signals sent from 180 earthquake monitoring stations land-based tonic in Japan and from 80 ocean sensor devices.

The Japan Meteorological Agency in collaboration with the media has developed an online system that allows overlapping tsunami warnings on television stations. In some places, there is a system that allows automatic opening of television sets to disseminate evacuation orders.

Alarm orders were also sent to local governments via satellites in the event of a disconnection in the Earth and the authorities would give sirens and strengthen communication systems if the evacuation order returned. should be necessary.

WITH