July 2, 2013. A team of scientists from the Shanghai University of Technology (China), led Benlunom Wann, made a statement about what satellites can now register here and magnetic fields from the tsunami. In the future, this could prevent the population of the respective regions.
Scientists have in mind is extremely dangerous phenomena, which are very often can cause tragedies. Recall that in 2004, the tsunami claimed the lives of nearly 250,000 people, and in 2011 in Japan by the tsunami killed 15,000 people, with the Fukushima disaster has occurred. The reason for these unfortunate events that the tsunami is very difficult to detect. To date, except for the information to seismologists, there are no reliable methods do not exist. However, the seismic data can only give an understanding that somewhere in the ocean (or close to it), the phenomenon has happened, is an analogue of an earthquake. This kind of signals are not always accompanied by an earthquake.
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It may be the opposite: push may be weak, and the resulting waves can be "off scale." Everyone knows that in the open sea tsunami may have a height of about one meter, rarely — a little more. How can extract a wave, even if the swell is up?
The Chinese have decided to appeal to a simple physical fact: the movement of salt water (slightly conductive) in a magnetic field (in this case the Earth) certainly could result in minor anomalies. To find out their origin, scientists have modeled different scenarios of the most tsunami. After that, the model predictions were verified with data on the oscillations of the magnetic field of the Earth in 2004 and 2010. (Sumatra and the Chilean tsunami).
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From all this it is clear that the wave height is directly related to the frequency of anomalies in the magnetic field of the planet. As it turned out, the relationship is very simple, in principle, it is possible to short change for a few seconds, using the data from the satellites from low orbit, and even on the testimony of weather balloons. Meanwhile, with today's seismic methods can take about five or six minutes to assess the degree of probability of a tsunami. In addition, the magnetic method, as the authors claim the work, allows us to observe the movement of the waves on the ocean almost in real time, which is not possible for seismologists, reporting only about the moment of triggering a wave of seismic event.