IDDO maintains and operates existing ice drilling equipment and develops new systems with two principal foci:
1. to provide high quality ice cores, and
2. to produce boreholes that provide access to the interior and beds of ice sheets and glaciers for such purposes as embedding instruments, collecting gas samples, setting seismic charges, studying subglacial processes, and studying subglacial geology.

Intermediate Depth Logging Winch

Photo of intermediate depth logging winch The Intermediate Depth Logging Winch is a Mount Sopris logging hoist that has been modified for polar field use. The winch is capable of logging boreholes 1500 meters deep, can operate at temperatures as low as -45 degrees C, and is transportable by Twin Otter. The winch allows full-range speed control down to a complete stop, and can maintain a uniform logging speed as low as 2.5 cm/s. The winch includes a digital depth measuring system using a bi-directional counter with a precision of 1 cm or better, and a cable-tension measuring system and a motor cut-out in the event of over-tension. The winch allows for automatic re-spooling of the cable via a level-wind system. The cable is a Teflon-coated standard four-conductor logging cable headed with a standard 1-inch outer-diameter Gearhart-Owen variant. The winch has a broadband slip-ring connector enabling it to transmit both analog and high speed digital signals from DC to ~10 MHz. The winch has an aluminum ramp system for loading/unloading from a Twin Otter.

A casing-mounted logging tower is available for use with the Deep Logging Winch.

Number in Inventory: 1
Max. Depth Possible: 1500 meters
IDDO Winch Operator Required: yes
Shipping Info: Intermediate Depth Logging Winch (IDLW) – Crate – 57" x 42" x 47" – 1000 lbs

IDLW Control Box – Hardigg Case – 39" x 24" x 12" – 75 lbs

(weights and dimensions above do not include a generator or fuel)

Associated Documents