| 释义 |
- 冰芯：从冰盖中取出的一种核心样本，最常见的来源是南极洲、格陵兰或其他高山冰川，其性质可用于重建特定地区的气候记录。
1 ?冰岩芯 极地冰岩芯——气候和环境的记录_stmopen 关键词】: 冰岩芯 气候 大气成分 尘埃 温室效应 [gap=1238]Keywords】: ice cores,climate,atmospheric composition,dust,greenhouse effect
- 1
For the time before records began, we have only "proxy records" reconstructed largely from tree rings and ice cores, supplemented by a few incomplete written accounts. 在开始有记录之前，我们只有主要根据年轮和冰芯重建的“代理记录”，还有一些不完整的书面记录作为补充。 - 2
Recent expeditions have taken ice samples from green icebergs and ice cores—vertical, cylindrical ice samples reaching down to great depths—from the glacial ice shelves along the Antarctic continent. 近代的探险队已经从绿色冰山和冰核中带回了一些冰块样本，这些样本呈垂直的圆柱状，是沿着南极洲大陆的冰川冰架从极深的位置中取出的。 - 3
Such ice cores trap gases, bits of dust, and other chemicals that were present in the snow that fell over Greenland for thousands of years and then became compressed into ice. 这些冰芯将气体、尘埃和其他化学物质封存在格陵兰岛数千年来的积雪中，然后被压缩成冰。
|