The wave propagated around the whole world and back in about 35 hours.Fascinating representation of the pressure wave associated with the Tonga eruption as it moved throughout the US today. The Royal Society of London published a series of maps illustrating the wave fronts propagation in a famous 1888 report on the eruption.Maps from an 1888 report, shown here as an animated loop, reveal the position every two hours of the pressure wave from the 1883 eruption of Krakatoa. The proliferation happens as regional pressure changes produce a force on the adjacent air, which then speeds up, triggering an expansion or compression with accompanying pressure modifications, which in turn forces air farther along the waves path.In our regular experience with higher-frequency noise waves, we anticipate sound to travel in straight lines, say, from a blowing up firework rocket straight to the ear of observer on the ground.
The wave propagated around the whole world and back in about 35 hours.Fascinating representation of the pressure wave associated with the Tonga eruption as it moved across the United States today. The growth of the wave front from the Tonga eruption was an especially amazing example of the phenomenon of international proliferation of climatic waves, which has been seen after other historic explosive occasions, including nuclear tests.This eruption was so effective it caused the atmosphere to sound like a bell, though at a frequency too low to hear. The Royal Society of London published a series of maps showing the wave fronts propagation in a well-known 1888 report on the eruption.Maps from an 1888 report, revealed here as an animated loop, expose the position every two hours of the pressure wave from the 1883 eruption of Krakatoa. The proliferation occurs as local pressure modifications produce a force on the nearby air, which then accelerates, triggering a growth or compression with accompanying pressure changes, which in turn forces air farther along the waves path.In our normal experience with higher-frequency sound waves, we anticipate sound to take a trip in straight lines, state, from a blowing up firework rocket straight to the ear of onlooker on the ground.