Document Details
Ice core drilling on Southern Patagonia Icefield -Development of a new portable drill and the field expedition in 1999
| Authors: | Kohshima, S., T. Shiraiwa, M.A. Godoi, K. Kubota, N. Takeuchi and K. Shinbori |
| Year: | 2002 |
| Periodical/Journal: | Memoirs of National Institute of Polar Research, Special Issue No. 56 |
| Page Range: | 49-58 |
| Abstract: | A 45.97 m-deep drilling operation was carried out during November/December 1999 on the accumulation area of Tyndall glacier (50o59'05"S, 73o31'12'W, 1756 m a.s.l.) at the southern end of the Southern Patagonia Icefield. A portable electromechanical drilling system was developed for ice-coring on temperate glaciers which often have aquifers near pore-close off depths. The firn-core obtained was subjected to visual stratigraphic observations and bulk-density measurements. Preliminary results suggest an extremely high accumulation rate (about 12-14 m a-1 w.e.) at the drilling site. The drilling operation was strenuous because of the continuous strong wind and enormous snowfall which forced the members to survive for nearly three weeks in a snow cave before evacuation. |
| ISSN/ISBN: | 0386-0744 |
| URL: | View document |
