EFFECT OF WIND SCOURING ON CLIMATIC RECORDS FROM ICE-CORE OXYGEN-ISOTOPE PROFILES
EFFECT OF WIND SCOURING ON CLIMATIC RECORDS FROM ICE-CORE OXYGEN-ISOTOPE PROFILES
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DOI：
10.1038/301205a0
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发表时间：
1983-01-01
期刊：
影响因子：
64.8
通讯作者：
REEH, N
中科院分区：
文献类型：
--
作者：
FISHER, DA;KOERNER, RM;REEH, N
冬季积雪被风吹走，解释了为什么冰分水岭处的年平均氧同位素比比下坡1.2公里处的负2.5‰。来自加拿大埃尔斯米尔岛冰帽上两个地点的岩芯显示了过去差异的变化，这取决于冰相对于冲刷区的起源。一些冰芯气候记录可能需要修正冲刷。
Removal of winter snow by wind explains why the annual mean oxygen-isotope ratio at an ice divide is 2.5‰ less negative than it is 1.2 km downslope. Cores from two sites on an ice cap, Ellesmere Island, Canada, show past variations in the difference, depending on where the ice originated relative to the scoured zone. Some ice-core climatic records may need correction for scouring.