Where do the data and the information about the earthquakes come from? Are they reliable?
A large number of technical skills and resources are required in order to quickly warn of possible tsunamis. Seismic sensors measure earthquakes while pressure and speed sensors in the oceans assess fast changes in water quantities in the sea. Additionally, satellites constantly observe the earth and the oceans. Once noticeable changes are identified, early warning information checks swing into operation. Potential earth- and seaquakes are verified, the area concerned is identified and a forecast is computed. With incoming data from geophones, earthquakes and seaquakes are located with pin-point accuracy. Other technologies such as the measurement of the complex electrical resistance or changes in radon and other gas concentrations are also used to forecast tsunamis. This global network of information is very fast and reliable.
