Drill, 4-Inch

2016 Winter

2016-2017 Antarctic Field Season Wraps Up

In addition to the two sub-glacial rock drilling projects described above, IDDO successfully supported three projects at or near the South Pole, and one at WAIS Divide, during the 2016-2017 Antarctic field season. South Pole Ice Core (SPICECORE; PI Murat Aydin; I-164-S) operations were completed in just three years at South Pole, with 1751 meters of ice core drilled, one round of borehole logging (PI Ryan Bay; I-194-S) with the Intermediate Depth Logging Winch completed, and all equipment has now been removed from the site. Engineers Jay Johnson and Josh Goetz completed all remaining activities this season, with help from the science team onsite. Also near South Pole Station, drillers Mike Waszkiewicz and Elizabeth Morton completed a number of holes ranging from 5 to 125 meters depth using the IDDO 4-Inch Drill system (PI Michelle Koutnik; I-193-S). In West Antarctica, despite needing to make a last-minute operator change, borehole logging with the Deep Logging Winch was also successfully completed at WAIS Divide (PI Erin Pettit; I-166-M).

Laser dust logging of the SPICECORE borehole. Credit: Jay Johnson.

The IDDO 4-Inch Drill near South Pole Station. Credit: Mike Waszkiewicz.

Borehole logging at WAIS Divide. Credit: Elizabeth Morton.

Decommissioning of the SPICECORE drill site. Credit: Joe Souney.

2015 Spring

Beneficial Design Upgrades Continue for 4-Inch 'Foro' Drill

During the Second Quarter, IDDO completed the preliminary design of the new 'Foro' Drill System to upgrade the popular, yet aging, 4-Inch Drill equipment. IDDO engineers have utilized feedback from 4-Inch Drill operators to make this new system lighter, more robust, more easily controlled, and more user-friendly. The sonde design is based on that of IDDO's Intermediate Depth Drill (IDD) and the current 4-Inch Drill designs, with certain components being interchangeable with the IDD, including the anti-torque section, motor section, and the cutter head. The designs for the 'Foro' Drill sled, winch, cable, and control system are brand new designs, and the tower is a modified and improved version of the current 4-Inch Drill tower design. The new sled, winch and tower assembly alone offer a 40% weight savings over the current 4-Inch Drill components. In addition, upgrading the control system to include only one comprehensive control/readout box, as opposed to the two separate boxes used by the 4-Inch Drill, will offer an additional 30% weight savings in this area. In March 2015, IDDO circulated a 'Name That Drill' Doodle poll to encourage IDPO and IDDO team members to vote on a name for the new components, so that distinguishing between the old and new equipment would be more straightforward. The name 'Foro' was selected, and is Latin for "to make a hole, pierce or to bore". On the last day of the Second Quarter, April 30th, IDDO held a Preliminary Design Review where the engineers presented the new system design and future plans for the 'Foro' Drill.

The major design upgrades for the 'Foro' Drill include:

  1. Redesign tower and winch to be lighter/smaller
    • 5.7 mm diameter steel electromechanical winch cable, same as used on the IDD Drill (current 4-Inch Drill cable is 13mm in diameter)
    • New cable weight is 13.1kg/100 m (current 4-Inch Drill cable weight is 17.1kg/100 m)
  2. Upgrades for wet conditions
    • New sealed motor section – submersible in drilling fluid or water (current 4-Inch Drill is not submersible)
  3. Upgraded control system
    • Drill and winch motors will be able to be run simultaneously
    • Off-the-shelf motor controllers
    • Reduced weight, compared to the existing 4-InchDrill control boxes

SolidWorks model of the new 'Foro' Drill winch, tower and sonde.

SolidWorks model of the new 'Foro' control box.

2013 Summer

Scientific Drilling

Greenland Aerosol and Greenhouse Gases Core (PI McConnell)
Despite being forestalled by weather in previous attempts to drill ice cores on Tunu Glacier in Greenland several years ago, IDDO driller Bella Bergeron and the science field team were able to recover successfully over 350 meters of ice core during the month of May. Using an IDDO 4-Inch Drill, one hole was completed down to 213 meters while a second hole was completed down to 141 meters.

2011 Summer

Multidisciplinary Science on the Greenland Ice Sheet is Enabled by Agile Ice Core Drills

Despite battling bitter winds and cold April temperatures in Greenland, P.I. Rick Forster's Arctic Circle Traverse (ACT) field team successfully drilled and processed over 200 meters of ice core at four traverse sites in Greenland under the leadership of IDDO Lead Driller, Terry Gacke. The cores may yield insights on snow accumulation. Meanwhile, in the center of the ice sheet, the field team for P.I.s David Noone and David Schneider drilled a shallow core array near Summit Station, Greenland using an IDDO PICO 4-inch hand auger system and Sidewinder kit. At Raven Camp on the ice sheet, activity focused on a detection system for ice sheet movement; a 300-meter borehole was drilled and a seismometer successfully deployed in May for P.I. Kent Anderson's Greenland Ice Sheet Monitoring Network (GLISN) project. Under the leadership of IDDO Lead Driller Bella Bergeron, IDDO driller Terry Gacke, IDDO engineer Tanner Kuhl and the GLISN science team utilized the 4-Inch drill system winch to control descent of the seismometer. In addition, three solar arrays were constructed, surface seismometers buried, wind turbines and GPS antennas erected, and interconnecting cables buried.

Photo of GLISN field team

GLISN field team. Photo: Tanner Kuhl

Photo of Lead Driller Beth Bergeron operating the winch

Lead Driller Beth Bergeron operates the winch. Photo: Tanner Kuhl

Browse Stories by Topic

Requesting Ice Drilling Support

If you are preparing a proposal that includes any kind of support from the IDPO-IDDO, you must contact IDPO ( IceDrill@Dartmouth.edu ) at least six weeks before you submit your proposal to obtain a Letter of Support and a Scope of Work document that MUST be included in your proposal.
[MORE INFORMATION]

Program Information

The U.S. Ice Drilling Program conducts integrated planning for the ice drilling science and technology communities, and provides drilling technology and operational support that enables the community to advance the frontiers of climate and environmental science.
[MORE INFORMATION]

IDPO-IDDO on Twitter