论沙粒两种起动关系与沙粒跃移的双重性

研究沙粒两种起动关系是深入认识沙粒两种起动效能的继续和发展。文章分析了沙粒两种起动的不同性质，首次把流体起动界定为风蚀性起动，把跃移质冲击起动界定为置换性起动。认为流体起动具有主动分异性，而冲击起动只有随机分异性。根据这些特性对沙粒两种起动效能和沙粒连续移动提出了新义。认为沙粒跃移具有双重性，跃移质有其冲击地表的一面，也有其大量耗能的一面。沙粒两种起动具有兴衰与共的不可分割关系。地表风蚀是沙粒两种起动优势互补相互促进的结果；而地表堆积有时是跃移质耗能过多引起两种起动互相制约的结果。通过多方论证，将沙粒两种起动效能之由传统的19：1，初步改为4：1乃至3：1。

An Review of Relations ofTwo Starts and Duplicity of Saltation of Sand Particles

The research of relations of two starts of sand particles is the continuation and development for understanding deeply the effects of two starts of sand particles.In this paper, the properties of two starts of sand particles were analyzed, the fluid start was defined as wind erosion start and impact start of saltation as substitution start for the first time. The fluid start was regarded as possessing initiative separability and impact start only possessing random separability. According to these properties, new definitions of two starting effects and successive motion of sand particles were put forward. The saltation of sand particles was regarded as possessing duplicity, saltation matters consumed much energy while impacting the ground surface, two starts of sand particles possessed inseparable relations that rose and declined together. Wind erosion was the results of complementation of superiority and mutual promotion of two starts of sand particles; however, accumulation on ground surface was sometimes the results of restricting each other of two starts because of energy consumption of saltation matters. By expounding and verifying in many ways,the ratio of two starting effects of sand particles was changed preliminarily into 4∶1 and even 3∶1 from traditional 19∶1.