globalchange  > 气候减缓与适应
DOI: 10.1017/jog.2018.95
WOS记录号: WOS:000462017000011
论文题名:
Air reverse circulation at the hole bottom in ice-core drilling
作者: Hu, Zhengyi1,2; Talalay, Pavel2; Zheng, Zhichuan2; Cao, Pinlu2; Shi, Guitao1; Li, Yuansheng1; Fan, Xiaopeng2; Ma, Hongmei1
通讯作者: Hu, Zhengyi ; Talalay, Pavel
刊名: JOURNAL OF GLACIOLOGY
ISSN: 0022-1430
EISSN: 1727-5652
出版年: 2019
卷: 65, 期:249, 页码:149-156
语种: 英语
英文关键词: ice coring ; ice engineering ; polar firn
WOS学科分类: Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向: Physical Geography ; Geology
英文摘要:

Ice-core drilling to depths of 200-300 m is an important part of research studies concerned with paleoclimate reconstruction and anthropogenic climate change. However, conventional drilling methods face difficulties due to firn permeability. We have developed an electromechanical ice-core drill with air reverse circulation at the hole bottom. We believe that the new drilling system will recover ice cores faster than shallow auger drills, with high efficiency and low energy consumption. The theoretically estimated up-hole speed of the airflow should be not <7.7 m s(-1) to allow proper removal of ice cuttings from the borehole bottom. The computer simulation and test results showed that the design of the new ice-coring drill is feasible. The maximum allowed penetration rate depends by square law on airflow.


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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/128847
Appears in Collections:气候减缓与适应

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作者单位: 1.Polar Res Inst China, Key Lab Polar Sci, State Ocean Adm, Shanghai, Peoples R China
2.Jilin Univ, Polar Res Ctr, Changchun, Jilin, Peoples R China

Recommended Citation:
Hu, Zhengyi,Talalay, Pavel,Zheng, Zhichuan,et al. Air reverse circulation at the hole bottom in ice-core drilling[J]. JOURNAL OF GLACIOLOGY,2019-01-01,65(249):149-156
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