火星上沙运输开始与持续所需的风速的差异：沙丘和沙尘暴的影响
Difference in the wind speeds required for initiation versus continuation of sand transport on Mars: Implications for dunes and dust storms
摘要：
火星的大部分表面都被沙丘、波纹和其他由风吹沙形成的特征所覆盖，这些特征被称为跳跃。此外，跃移使大气中充满了尘埃气溶胶，这些尘埃气溶胶主导着火星的气候。我们在这里表明，跳跃可以维持在火星上的风速的数量级低于启动它所需的。我们进一步表明，由此产生的滞后效应导致跳跃发生低得多的风速比以前认为的。这些发现对火星上沙尘暴、沙丘和涟漪的形成具有重要意义。
英文摘要：
Much of the surface of Mars is covered by dunes, ripples, and other features formed by the blowing of sand by wind, known as saltation. In addition, saltation loads the atmosphere with dust aerosols, which dominate the Martian climate. We show here that saltation can be maintained on Mars by wind speeds an order of magnitude less than required to initiate it. We further show that the resulting hysteresis effect causes saltation to occur for much lower wind speeds than previously thought. These findings have important implications for the formation of dust storms, sand dunes, and ripples on Mars.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
