Air reverse circulation at the hole bottom in ice-core drilling
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...
Published in: | Journal of Glaciology |
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Cambridge University Press
2019
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Online Access: | https://doi.org/10.1017/jog.2018.95 https://doaj.org/article/424efc6fcdf846b9a36e01f0e3b0fd47 |
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ftdoajarticles:oai:doaj.org/article:424efc6fcdf846b9a36e01f0e3b0fd47 2023-05-15T16:38:41+02:00 Air reverse circulation at the hole bottom in ice-core drilling ZHENGYI HU PAVEL TALALAY ZHICHUAN ZHENG PINLU CAO GUITAO SHI YUANSHENG LI XIAOPENG FAN HONGMEI MA 2019-02-01T00:00:00Z https://doi.org/10.1017/jog.2018.95 https://doaj.org/article/424efc6fcdf846b9a36e01f0e3b0fd47 EN eng Cambridge University Press https://www.cambridge.org/core/product/identifier/S0022143018000953/type/journal_article https://doaj.org/toc/0022-1430 https://doaj.org/toc/1727-5652 doi:10.1017/jog.2018.95 0022-1430 1727-5652 https://doaj.org/article/424efc6fcdf846b9a36e01f0e3b0fd47 Journal of Glaciology, Vol 65, Pp 149-156 (2019) ice coring ice engineering polar firn Environmental sciences GE1-350 Meteorology. Climatology QC851-999 article 2019 ftdoajarticles https://doi.org/10.1017/jog.2018.95 2023-03-12T01:30:59Z 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. Article in Journal/Newspaper ice core Journal of Glaciology Directory of Open Access Journals: DOAJ Articles Journal of Glaciology 65 249 149 156 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
ice coring ice engineering polar firn Environmental sciences GE1-350 Meteorology. Climatology QC851-999 |
spellingShingle |
ice coring ice engineering polar firn Environmental sciences GE1-350 Meteorology. Climatology QC851-999 ZHENGYI HU PAVEL TALALAY ZHICHUAN ZHENG PINLU CAO GUITAO SHI YUANSHENG LI XIAOPENG FAN HONGMEI MA Air reverse circulation at the hole bottom in ice-core drilling |
topic_facet |
ice coring ice engineering polar firn Environmental sciences GE1-350 Meteorology. Climatology QC851-999 |
description |
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. |
format |
Article in Journal/Newspaper |
author |
ZHENGYI HU PAVEL TALALAY ZHICHUAN ZHENG PINLU CAO GUITAO SHI YUANSHENG LI XIAOPENG FAN HONGMEI MA |
author_facet |
ZHENGYI HU PAVEL TALALAY ZHICHUAN ZHENG PINLU CAO GUITAO SHI YUANSHENG LI XIAOPENG FAN HONGMEI MA |
author_sort |
ZHENGYI HU |
title |
Air reverse circulation at the hole bottom in ice-core drilling |
title_short |
Air reverse circulation at the hole bottom in ice-core drilling |
title_full |
Air reverse circulation at the hole bottom in ice-core drilling |
title_fullStr |
Air reverse circulation at the hole bottom in ice-core drilling |
title_full_unstemmed |
Air reverse circulation at the hole bottom in ice-core drilling |
title_sort |
air reverse circulation at the hole bottom in ice-core drilling |
publisher |
Cambridge University Press |
publishDate |
2019 |
url |
https://doi.org/10.1017/jog.2018.95 https://doaj.org/article/424efc6fcdf846b9a36e01f0e3b0fd47 |
genre |
ice core Journal of Glaciology |
genre_facet |
ice core Journal of Glaciology |
op_source |
Journal of Glaciology, Vol 65, Pp 149-156 (2019) |
op_relation |
https://www.cambridge.org/core/product/identifier/S0022143018000953/type/journal_article https://doaj.org/toc/0022-1430 https://doaj.org/toc/1727-5652 doi:10.1017/jog.2018.95 0022-1430 1727-5652 https://doaj.org/article/424efc6fcdf846b9a36e01f0e3b0fd47 |
op_doi |
https://doi.org/10.1017/jog.2018.95 |
container_title |
Journal of Glaciology |
container_volume |
65 |
container_issue |
249 |
container_start_page |
149 |
op_container_end_page |
156 |
_version_ |
1766029014061809664 |