论文部分内容阅读
冰川体积平衡与冰芯的联合研究可以提供详细的当前与过去气候变化信息。在这项研究中根据当前气候与冰川动态变化状况分析了一段取自瑞典北部马尔马冰川(Marmaglaciaren)形成于小冰河期(1600～1900)的27.5m长的冰芯。当前增长的堆积率意味着在北斯堪的纳维亚山区与本世纪早期相比气候上海洋性影响越来越多。受强烈的东西气候梯度和本地气候变化影响,冰川在当前变化上表现得各不相同;山脉西部块状冰川的增长幅度较大,而东部冰川在过去十年中体积并未增加,因为它们的体积主要由夏季温度控制,而这个因素没有变化。当过去的气候变化由气候梯度的变化和海洋性与大陆性气候界线的东西移动体现时,我们在东部冰川中就拥有了非常好的具代表性的温度记录资料。在马尔马冰川取样前利用雷达对35个瑞典冰川进行了温度分布测量。被调查的冰川中有43%在80～120m深处发现了干冰,如低于冰点的冰。因此在其它瑞典冰川中寻找有用的古记录的可能性是非常好的。
A joint study of glacial volume balance and ice cores can provide detailed current and past climate change information. In this study, a 27.5-m-long ice core, taken from the Marmaglaciaren of northern Sweden, formed during the Little Glacial Period (1600-1900) was analyzed based on the current climate and glacial dynamics. The current rate of accumulation means that there is an increasing maritime climate in North Scandinavia compared to the early part of the century. Due to strong climate change and local climatic changes, the glaciers vary widely in current changes; the massive glaciers in the western mountains have a larger growth rate, whereas the eastern glaciers have not increased in volume over the past decade because of their The volume is dominated by the summer temperature, and this factor has not changed. When past climate change was manifested by changes in the climatic gradients and things moving between the maritime and the continental climate, we have very good and representative temperature records in the eastern glaciers. 35 Swedish glaciers were surveyed using radar before the Marma Glacier sampling. 43% of the glaciers surveyed found dry ice in the depths of 80 ~ 120m, such as ice below the freezing point. Therefore, the possibility of finding useful records of other glaciers in Sweden is very good.