How do impacts produce seismic waves?
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Impacts produce seismic waves through the process of impact-induced seismic shaking. When an impact occurs on an asteroid, it causes the movement of regolith grains on the surface, leading to mass movements such as landslides and crater erasures . In the case of down-hole shear wave velocity measurements, seismic signals are generated by an offset mass rotating in a plane perpendicular to the ground surface, which impacts an impact member coupled to the ground . The collapses of the World Trade Center towers generated large seismic waves, observed in multiple states and up to 428 km away . Large terrestrial meteorite impacts can result in focusing of seismic waves at the antipode, inducing peak displacements, dynamic stresses, and strains . However, seismic observations after the impacts of Shoemaker–Levy 9 fragments A and H were unable to detect any seismic signal, suggesting a kinetic energy of less than 2 × 10^21 J for the impacts .
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18 Citations | Impacts produce seismic waves that can be classified into two categories: single pulse-like waves and damped oscillation waves. The paper provides examples and measurements of these waves. |
| The paper does not provide information on how impacts produce seismic waves. The paper focuses on the recording and analysis of seismic signals from the impacts and collapses at the World Trade Center towers. | |
38 Citations | Impacts produce seismic waves by causing a release of energy that propagates through the Earth's interior and along its surface. |
23 Citations | The paper does not provide information on how impacts produce seismic waves. |
Patent 09 Sep 2005 13 Citations | The paper does not provide information on how impacts produce seismic waves. |
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