Locating a Drilling Site on the Patagonian Icefields
Locating a suitable drill site involves a number of compromises. At the proper place, an ice core can provide a record of climate changes in the past. Also, everything that has precipitated on the ice cap will be preserved, including biological fall out. At cold places, even gases are preserved in the bubbles in the ice, or in the ice lattice. In fact the ice cap can be considered as a long-term storage of both climatological and environmental information. In order to retrieve the information, an ice core has to be drilled. The site where the core is drilled determines the information that can be obtained. At a high accumulation site, it may be possible to obtain information at time scales of a fraction of a year. At a site with less accumulation, it may be possible to obtain records going further back in time. Summer melting obliterates the signals from the ice core, and for most studies summer melting should be minimized. The best drilling site therefore depends on the purpose of the drilling.
KeywordsDust Radar Drilling Mountain Side Remote Sensing
Unable to display preview. Download preview PDF.
- Aristarain, A. J., and Delmas, R. J., 1993, Firn-core study from the Southern Patagonia ice cap, South America, Journal of Glaciology, 39(132):249–254.Google Scholar
- Benn, D. I., and Evans, D. J. A., 1998, Glaciers and Glaciation, Arnold, ISBN 0 340 58431, Figure 1.18, Plate 4.Google Scholar
- Damm, V., and Casassa, G., 1999, Glaciological and hydrogeological studies of glaciers in central Chile and Patagonia using a helicopter borne radio echo soundings system. Operational report and preliminary results, Archiv-Nr. 0119119, Bundesanstalt fur Geowissenschaften and Rohstoffe, Hannover, Germany, pp. 34.Google Scholar
- Godoi, M. A., Shiraiwa, T., Kohshima, S., and Kubota, K., 2002, Firn-core drilling operation at Tyndall Glacier, Southern Patagonia Icefield, in: The Patagonian kefields: a unique natural laboratory for environmental and climate change studies, G. Casassa, F. V. Septúlveda, and R. M. Sinclair, eds., Kluwer Academic/Plenum Publishers, New York, pp. 149–156.Google Scholar
- Gundestrup, N. S., Bindschadler, R. A., and Zwally, H. J., 1986, Seasat range measurements verified on a 3-D ice sheet, Annals of Glaciology, 8:69–72.Google Scholar
- Paterson, W. S. B., 1994, The Physics of Glaciers, 3rd edition, Elsevier, ISBN 0–08–037945.Google Scholar
- Rivera, A., and Casassa G., 2002, Ice thickness measurements on the Southern Patagonia Icefield, in: The Patagonian lcefields: a unique natural laboratory for environmental and climate change studies, G. Casassa, F. V. Sepúlveda, and R. M. Sinclair, eds., Kluwer Academic/Plenum Publishers, New York, pp. 101–115.Google Scholar