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

许多物质从大气中转移到地球表面的雪和冰层中。它们有的保存在原始状态，有的则经过了遗传过程。它们显示了冰雪层中独特的信号，作为沉积环境和气候的信息。各层气溶胶源物质通过输送和迁移过程与大气条件密切相关，被认为是环境的重要信号。研究主要集中在以下4个方面。1).通过大气进入地球的沉积过程。2)通过雪层的二次迁移和运输过程。3).从牢固到结冰的固定过程。4)冰芯记录信号的形成过程。各种来源的气溶胶通过大气环流输送到极地地区，并通过沉积保存在雪层中。雪层的稳定同位素比率和化学特征反映在大气和沉积过程中。各个地方的过程并不是那么简单。极地地区的冰芯有各种各样的信号，可能有丰富的信息。信号形成的过程现在还不太清楚。在研究中，我们对气溶胶在雪表面的沉积过程进行了野外观测，并对人工来源的放射性核素的全球输送进行了讨论。通过两年的研究，探讨了其成因及季节性分布的化学反应。

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.