Migration of atmospheric aerozols into snow and ice Core, forming signals

许多物质从大气层被输送到地球表面的冰雪层中。它们中的一些在原始状态下被保存，另一些在接受了二发生过程之后被保存。它们在冰雪层中显示出独特的信号，作为沉积环境和气候的信息，其中的气溶胶源物质通过输运和迁移过程与大气条件有着密切的关系，被认为是环境的重要信号。1）。通过大气层沉积到地球上。2）。通过雪层的二次迁移和运输过程。3）。从坚硬到结冰的固定过程。4）。冰芯中记录的信号的形成过程。各种来源的气溶胶通过大气环流输送到极地，并通过沉积作用保存在雪层中。雪层中的稳定同位素比值和化学特征反映在大气和沉积过程中。各地的过程并不简单，极地冰芯的信号多种多样，可能蕴藏着丰富的信息。在本研究中，我们对雪面气溶胶沉积过程进行了野外观测，并对人工源放射性核素的全球输运进行了探讨。通过两年的研究，探讨了其成因、化学反应及季节分布。

Many substances are transported from the atmosphere into snow and ice layers on the earth surface. Some of them are preserved in the original state and others after receiving the digenetic processes. They show the unique signals in the snow and ice layers as the information on sedimentary environments and climate.The substances of aerosol origin in the layers have close relation with atmospheric conditions through the transportation and migration processes, and are considered to be the important signals for the environments.The research was concentrated the following 4 topics. 1). depositional process through the atmosphere onto the earth. 2). secondary migration and transportation processes through the snow layers. 3). fixing process from firm to ice. 4). formation process of signals recorded in the ice core.The aerosols of various origins are transported into polar regions through the atmospheric circulation and preserved into snow layers through sedimentation. Stable isotopic ratio and chemical features in snow layers are reflected by the atmospheric and sedimentation processes. The processes are not so simple by the various localities.Ice cores in the polar regions have various signals, having possibly fruitful information. The process for the signal formation is now not so clear.In the research, we made the field observation for the process of aerozol deposition onto snow surface, with the discussion on global transportation of radio nuclide of artificial origin. Through the research during two years, the origin and chemical reaction with seasonal distribution were discussed.