scholarly journals Chinese First Deep Ice-Core Drilling Project DK-1 at Dome A, Antarctica (2011-2013): progress and performance

2014 ◽  
Vol 55 (68) ◽  
pp. 88-98 ◽  
Author(s):  
Nan Zhang ◽  
Chunlei An ◽  
Xiaopeng Fan ◽  
Guitao Shi ◽  
Chuanjin Li ◽  
...  
Keyword(s):  
Drilling Fluid ◽  
Ice Core ◽  
Dome A ◽  
Auxiliary Equipment ◽  
Core Drilling ◽  
Pilot Hole ◽  
Four Seasons ◽  
The Status ◽  
And Performance ◽  
Drilling Project

AbstractThe Chinese First Deep Ice-Core Drilling Project DK-1 has commenced at Kunlun station in the Dome A region, the highest plateau in Antarctica. During the first season, within the 28th Chinese National Antarctic Research Expedition (CHINARE) 2011/12 the pilot hole was drilled and reamed in order to install a 100 m deep fiberglass casing. In the next season, 29th CHINARE 2012/13, the deep ice-core drilling system was installed, and all the auxiliary equipment was connected and commissioned. After filling the hole with drilling fluid (n-butyl acetate), three runs of ‘wet’ ice-core drilling were carried out and a depth of 131.24 m was reached. Drilling to the bedrock at the target depth of ∼3100 m is planned to be completed during a further four seasons. We describe the work in progress and the status of equipment for the Dome A drilling project.

scholarly journals Deep ice-core drilling to 800 m at Dome A in East Antarctica

2021 ◽  
pp. 1-12
Author(s):  
Zhengyi Hu ◽  
Guitao Shi ◽  
Pavel Talalay ◽  
Yuansheng Li ◽  
Xiaopeng Fan ◽  
...  
Keyword(s):  
Ice Core ◽  
Ice Cores ◽  
East Antarctica ◽  
Hole Drilling ◽  
Dome A ◽  
Core Drilling ◽  
Pilot Hole ◽  
The Troubles ◽  
Brittle Zone

Abstract A deep ice core was drilled at Dome A, Antarctic Plateau, East Antarctica, which started with the installation of a casing in January 2012 and reached 800.8 m in January 2017. To date, a total of 337 successful ice-core drilling runs have been conducted, including 118 runs to drill the pilot hole. The total drilling time was 52 days, of which eight days were required for drilling down and reaming the pilot hole, and 44 days for deep ice coring. The average penetration depths of individual runs were 1 and 3.1 m for the pilot hole drilling and deep ice coring, respectively. The quality of the ice cores was imperfect in the brittle zone (650−800 m). Some of the troubles encountered are discussed for reference, such as armoured cable knotting, screws falling into the hole bottom, and damaged parts, among others.

scholarly journals The Berkner Island (Antarctica) ice-core drilling project

2007 ◽  
Vol 47 ◽  
pp. 115-124 ◽  
Author(s):  
Robert Mulvaney ◽  
Olivier Alemany ◽  
Philippe Possenti
Keyword(s):  
Melting Point ◽  
Ice Core ◽  
Ice Sheet ◽  
Austral Summer ◽  
Core Drilling ◽  
Drilling Operation ◽  
Drilling Technology ◽  
Pressure Melting ◽  
Small Team ◽  
Drilling Project

AbstractWe describe a project to retrieve a 948m deep ice core from Berkner Island, Antarctica. Using relatively lightweight logistics and a small team, the drilling operation over three austral summer seasons used electromechanical drilling technology, described in detail, from a covered shallow pit and a fluid-filled borehole. A basal temperature well below pressure-melting point meant that no drilling problems were encountered when approaching the bed and the borehole penetrated through to the base of the ice sheet, and sediment was retrieved from beneath the ice.

scholarly journals Ice-Core Drilling at 5700 m Powered by a Solar Voltaic Array

1985 ◽  
Vol 31 (109) ◽  
pp. 360-361 ◽  
Author(s):  
Bruce R. Koci
Keyword(s):  
Ice Core ◽  
Core Drilling ◽  
Ice Cap ◽  
The World ◽  
And Performance ◽  
Quelccaya Ice Cap

AbstractDuring the summer of 1983 a 2 kW array of solar voltaic panels was used to power a drill which collected two cores of 154 m and 163 m length to bedrock on the Quelccaya ice cap in Peru. The operation and performance of this array are discussed, considering the need for future requirements in remote pristine areas of the world.

scholarly journals Deep ice core drilling to a depth of 3035.22 m at Dome Fuji, Antarctica in 2001–07

2020 ◽  
pp. 1-11
Author(s):  
Hideaki Motoyama ◽  
Akiyoshi Takahashi ◽  
Yoichi Tanaka ◽  
Kunio Shinbori ◽  
Morihiro Miyahara ◽  
...  
Keyword(s):  
Ice Core ◽  
Austral Summer ◽  
Storage Efficiency ◽  
Core Drilling ◽  
Pilot Hole ◽  
Core Length ◽  
Drilling Data ◽  
Antarctic Research ◽  
Drilling System ◽  
Small Holes

Abstract The Japanese second deep ice coring project was carried out at Dome Fuji, Antarctica. Following the drilling of the pilot hole in 2001, deep ice core drilling led by the Japanese Antarctic Research Expedition (JARE) was conducted over four austral summer seasons, beginning with the 2003/04 season and reached a depth of 3035.22 m near the bedrock in January 2007. The new drill was designed and developed with the goals of (1) solving the problems encountered during the first JARE deep coring drill and (2) achieving more efficient drilling. In particular, the maximum core length that can be drilled at one time was increased from 2.30 m to 3.84 m and the chip storage efficiency was enhanced by a special pipe with many small holes. This paper gives an outline of the improved drilling system, the progress of drilling and various drilling data.

scholarly journals Deep ice-core drilling performance and experience at NEEM, Greenland

2014 ◽  
Vol 55 (68) ◽  
pp. 53-64 ◽  
Author(s):  
Trevor J. Popp ◽  
Steffen B. Hansen ◽  
Simon G. Sheldon ◽  
Christian Panton
Keyword(s):  
Drilling Fluid ◽  
Ice Core ◽  
Borehole Diameter ◽  
Extended Version ◽  
Core Drilling ◽  
Drilling Operation ◽  
Design And Implementation ◽  
Drilling Performance ◽  
Drill Fluid ◽  
Drilling Operations

AbstractThe NEEM deep ice-core drilling in northwest Greenland was completed in summer 2010 after three seasons, which included establishing all drilling infrastructure. Normal drilling operations in the main borehole were declared terminated at 2537.36 m below the surface, when further penetration was stopped by a stone embedded in the ice in the path of the drill head. The design and implementation of the drilling operation strongly resembled the NGRIP drilling program. The NEEM drill was an extended version of the Hans Tausen (HT) drill, with specific modifications to optimize its use with the highly viscous Estisol-240/Coasol drill fluid used at NEEM. Modification to the drill and its performance in the new drilling fluid was largely satisfactory and successful. Throughout the drilling, special consideration was given to the way chips were transported and collected in a new chip chamber, including the consequences of drilling a larger borehole diameter than with previous drill operations that used the HT family of drills. The problems normally associated with warm ice drilling near the base of an ice sheet were largely absent at NEEM.

scholarly journals Ice-Core Drilling at 5700 m Powered by a Solar Voltaic Array

1985 ◽  
Vol 31 (109) ◽  
pp. 360-361 ◽  
Author(s):  
Bruce R. Koci
Keyword(s):  
Ice Core ◽  
Core Drilling ◽  
Ice Cap ◽  
The World ◽  
And Performance ◽  
Quelccaya Ice Cap

Abstract During the summer of 1983 a 2 kW array of solar voltaic panels was used to power a drill which collected two cores of 154 m and 163 m length to bedrock on the Quelccaya ice cap in Peru. The operation and performance of this array are discussed, considering the need for future requirements in remote pristine areas of the world.

Research and Application of High-Temperature Drilling Fluid for Scientific Core Drilling Project

2017 ◽  
Author(s):  
Zheng Wenlong ◽  
Wu Xiaoming ◽  
Huang Yuming ◽  
Xu Jie ◽  
Wang Wenshi
Keyword(s):  
High Temperature ◽  
Drilling Fluid ◽  
Core Drilling ◽  
Drilling Project

scholarly journals Surface topography of Dome A, Antarctica, from differential GPS measurements

2009 ◽  
Vol 55 (189) ◽  
pp. 185-187 ◽  
Author(s):  
Xiao Cheng ◽  
Peng Gong ◽  
Yanmei Zhang ◽  
Zhanyi Sun ◽  
Fuhai Wei
Keyword(s):  
Surface Topography ◽  
Ice Core ◽  
Differential Gps ◽  
Gps Measurements ◽  
Dome A ◽  
Core Drilling

Dome A is the highest ice feature in Antarctica, at over 4000 m a.s.l., and overlies the Gamburtsev mountains. It is believed that deep ice-core drilling in this area may reveal the oldest ice in Antarctica, providing an unparalleled paleoclimate record in excess of 1 Ma, and perhaps going back as far as 1.2 Ma (Xiao and others, 2008). However, little is known about this area because its height and distance from the coast and scientific stations makes access difficult.

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