Early-stage ejecta velocity distribution for vertical hypervelocity impacts into sand |
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| Authors: | Brendan Hermalyn Peter H Schultz |
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| Institution: | Department of Geological Sciences, Brown University, Box 1846, Providence, RI 02912, United States |
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| Abstract: | The ejecta dynamics during main-stage excavation flow in a cratering event have previously been well characterized, particularly for vertical impacts. In this experimental study, we present new results addressing the early-time, low-angle, high-speed component of the ejecta velocity distribution as a function of time for hypervelocity vertical impacts into sand. Although this regime represents a very small portion of total ejected mass in laboratory experiments, it comprises a greater percentage of growth for larger craters. |
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| Keywords: | Impact processes Cratering Collisional physics Geological processes |
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