Experimental study on propagation process of impact-induced seismic wave in quartz sand simulating a

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Introduction:Recent spacecraft surveys clarify that the asteroid surface is covered with regolith made of boulders and pebbles such as that found on asteroid Itokawa by the Hayabusa spacecraft.
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Planetary small bodies are covered by a particle layer called regolith.The particle size and porosity of the regolith surface of small bodies are important physical properties.
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