A potential high-elevation ice-core site at Hielo Patagonico Sur
作者： Margit Schwikowski , Sabina Brütsch , Gino Casassa , Andrés Rivera
DOI: 10.3189/172756406781812014
关键词: Geology 、 Ice field 、 Altitude 、 Ice core 、 Geomorphology 、 Southern Hemisphere 、 Glacier 、 Paleoclimatology 、 Meltwater 、 Firn
摘要: The Patagonia icefields constitute a unique location in the Southern Hemisphere for obtaining non-polar paleo-records from ice cores south of 458 S. Nevertheless, no ice-core record with meaningful paleoclimate information has yet been obtained Patagonia. This deficiency is due to extremely harsh field conditions, and fact that main plateaus both Hielo Patagonico Norte (HPN; northern icefield) Sur (HPS; southern are strongly affected by meltwater percolation. In order explore suitability high-elevation glacier sites at HPS as archives, three shallow firn were retrieved covering altitude range 1543-2300 m a.s.l. glaciochemical records two lower confirm presence superimposed ice, clear sign formation core 2300 m, signature appears be preserved, indicating significant melting occurred. Although there might problems associated wind erosion extreme melt events, good potential well-preserved within glaciers located higher than m.
harvard.edu
igsoc.org参考文章(23)
Gino Casassa, Andrés Rivera, Masamu Aniya, Renji Naruse, Current Knowledge of the Southern Patagonia Icefield Series of the Centro de Estudios Científicos. pp. 67- 83 ,(2002) , 10.1007/978-1-4615-0645-4_7
Jorge F. Carrasco, Gino Casassa, Andrés Rivera, Meteorological and Climatological Aspects of the Southern Patagonia Icefield Series of the Centro de Estudios Científicos. pp. 29- 41 ,(2002) , 10.1007/978-1-4615-0645-4_4
Keiji Kubota, María Angélica Godoi, Takayuki Shiraiwa, Shiro Kohshima, Firn-Core Drilling Operation at Tyndall Glacier, Southern Patagonia Icefield Series of the Centro de Estudios Científicos. pp. 149- 156 ,(2002) , 10.1007/978-1-4615-0645-4_14
Shiro Kohshima, Yoshitaka Yoshimura, Nozomu Takeuchi, Glacier Ecosystem and Biological ICE-Core Analysis Series of the Centro de Estudios Científicos. pp. 1- 8 ,(2002) , 10.1007/978-1-4615-0645-4_1
Charles R. Warren, David E. Sugden, The Patagonian Icefields: A Glaciological Review Arctic and alpine research. ,vol. 25, pp. 316- ,(1993) , 10.2307/1551915
Renji Naruse, Masamu Aniya, Pedro Skvarca, Gino Gasassa, Recent variations of calving glaciers in Patagonia, South America, revealed by ground surveys, satellite-data analyses and numerical experiments Annals of Glaciology. ,vol. 21, pp. 297- 303 ,(1995) , 10.1017/S0260305500015974
U. Schotterer, K. Fröhlich, H. W. Gäggeler, S. Sandjordj, W. Stichler, Isotope Records from Mongolian and Alpine Ice Cores as Climate Indicators Climatic Change at High Elevation Sites. ,vol. 36, pp. 287- 298 ,(1997) , 10.1007/978-94-015-8905-5_15
Alberto J. Aristarain, Robert J. Delmas, Firn-core study from the southern Patagonia ice cap, South America Journal of Glaciology. ,vol. 39, pp. 249- 254 ,(1993) , 10.1017/S0022143000015914
Anja Eichler, Margit Schwikowski, Heinz W Gäggeler, Verena Furrer, Hans-Arno Synal, Jürg Beer, Matthias Saurer, Martin Funk, None, Glaciochemical dating of an ice core from upper Grenzgletscher (4200 m a.s.l.) Journal of Glaciology. ,vol. 46, pp. 507- 515 ,(2000) , 10.3189/172756500781833098
J.R. Toggweiler, B. Samuels, Effect of drake passage on the global thermohaline circulation Deep Sea Research Part I: Oceanographic Research Papers. ,vol. 42, pp. 477- 500 ,(1995) , 10.1016/0967-0637(95)00012-U