GEOG 1350 Lecture Notes - Lecture 10: Stony-Iron Meteorite, Blast Wave, Infrasound
20 Apr 2018
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Document Summary
Infrasound are sound waves too low to hear. The deep base tones reflect huge amounts of energy that the meteor gives off. The clues are that it can travel for a long time without being absorbed. Low frequency waves circled the earth a few times from this blast. The station with sensitive sensors that detected this were larger waves than ever seen before: describe the composition of a stony iron meteorite. They have so much metal in them, so they weigh more than other meteorites. So dense, the type of damage is incredible. The chelyabinsk meteor fragments were found to be 90% rock and. Strength and density are important; a denser stronger one will fragment lower in the atmosphere where a weak one will fragment high in the atmosphere. It revealed that the interior is untouched by the atmosphere with pressure being able to exceed the strength of the asteroid.
