Cosmogenic Radionuclides in the GISPII Ice Core: 10Be, 26Al, and 36Cl

该奖项支持测量格陵兰冰盖项目2 （GISP2）冰芯样品中的铍-10、铝-26和氯-36的项目。将测量从地核表面到地核底部的宇宙核素浓度的连续剖面，所得的核素浓度时间序列将用于推断太阳活动的历史，推断地磁场变化的历史和冰芯的年代测定。该时间序列还将用于通过大气环流和大气化学对核素沉积的影响来研究气候历史。亚冰基岩的成功取芯也为研究亚冰表面的暴露年龄提供了机会。＊＊＊

9321407 Nishiizumi This award supports a program to measure Beryllium-10, Aluminum-26, and Chlorine-36 in samples from the Greenland Ice Sheet Project Two (GISP2) ice core. A continuous profile of cosmogenic nuclide concentrations from the surface to the bottom of the core will be measured and the resulting time series of nuclide concentrations will be applied to deducing the history of solar activity, deducing the history of variations in the geomagnetic field and dating of ice cores. The time series will also be used to study climatic history through the effects of atmospheric circulation and of atmospheric chemistry on nuclide deposition. The successful coring of the sub-ice bedrock has also provided the opportunity of studying the exposure age of the sub-ice surface. ***