In total, they examined the signatures for seven rocket types to derive a relation between the measured amplitude and the rocket thrust. There are over 992,000 unique samples, with each containing an average of 500 seeds. For the first, a Space Shuttle launched from Kennedy Space Center in November 2009, the team detected the infrasound created by the splash down of the fuel boosters before they detected the acoustic signal of the initial rocket launch because they dropped down closer to the infrasound station than the launch site. In the following video the infrasound of the Space Shuttle launch recorded at a station in Bermuda has been sped up by 250 times into the range humans can hear:The impact of the boosters on the ground appears before the acoustic signal of the initial rocket launch because they dropped down closer to the infrasound station than the launch site is. In total, they examined the signatures for seven rocket types to derive a relation between the measured amplitude and the rocket thrust: Space Shuttle; SpaceX's Falcon 9; various Russian Soyuz and Protons rockets; the European Space Agency's Ariane 5 and several types of Chinese Long March rockets.
Protons and other types of spaceship donned insuring policies.
( z0 don :ARG0 ( z1 and :op ( z2 spaceship :ARG2-of ( z3 protect ) ) :op ( z4 spaceship :mod ( z5 type :mod ( z6 other ) ) ) ) :ARG1 ( z7 policy :ARG0-of ( z8 insure ) ) )
(z0 / don-01
    :ARG0 (z1 / and
              :op1 (z2 / spaceship
                       :ARG2-of (z3 / protect-01))
              :op2 (z4 / spaceship
                       :mod (z5 / type
                                :mod (z6 / other))))
    :ARG1 (z7 / policy-01
              :ARG0-of (z8 / insure-02)))
Protons and other types of spaceship donned insuring policies .
z5 :mod z6
z1 :op1 z2
z2 :ARG2-of z3
z4 :mod z5
z1 :op2 z4
z0 :ARG0 z1
z7 :ARG0-of z8
z0 :ARG1 z7