A 109.91 m ice core was recovered from Dome A (or Dome Argus), the highest ice feature in Antarctica, during the 2004/05 austral summer by the 21st Chinese National Antarctic Research Expedition (CHINARE-21). Both methane profile along the core and firn densification model calculation suggest that the close-off depth is at about 102.0 m with an ice age about 4200 a. Stable isotopes (δ18O and δD) of the chips samples produced during each run of ice core drilling at Dome A, together with those of the other co...
【英文摘要】
A 109.91 m ice core was recovered from Dome A (or Dome Argus), the highest ice feature in Antarctica, during the 2004/05 austral summer by the 21st Chinese National Antarctic Research Expedition (CHINARE-21). Both methane profile along the core and firn densification model calculation suggest that the close-off depth is at about 102.0 m with an ice age about 4200 a. Stable isotopes (δ18O and δD) of the chips samples produced during each run of ice core drilling at Dome A, together with those of the other co...
【基金】
Supported by National Natural Science Foundation of China (Grant Nos. 40825017 and 40576001);
One Hundred Talents Program of Chinese Academy of Sciences, Knowledge Innovation Project of the Chinese Academy of Sciences (Grant No. KZCX3-SW- 354);
National Key Technology R & D Program (Grant No. 2006BAB18B01);
and the Programme International de Cooperation Scientifique (PICS) Project “Climate and Environment in Antarctica and the Himalayas” (CLEAH, PICS no3499)
【更新日期】
2009-10-20
【分类号】
P343.6
【正文快照】
Along the dividing line of East Antarctica are several gigantic domes,including Dome A(80°22′S,77°22′E,4092.5m above sea level,and1228km away from coast,Dome B(77°05′S,94°55′E,3650m,1020km),Dome C(74°39′S,124°10′E,3240m,870km),Dome F(77°19′S
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