Title Dielectric permittivity of snow measured along the route traversed in the Japanese-Swedish Antarctic Expedition 2007/08
Author Sugiyama, S.; Enomoto, H.; Fujita, S.; Fukui, K.; Nakazawa, F.; Holmlund, P.
Author Affil Sugiyama, S., Hokkaido University, Institute of Low Temperature Science, Sapporo, Japan. Other: Kitami Institute of Technology, Japan; National Institute of Polar Research, Japan; Tateyama Caldera Sabo Museum, Japan; Stockholm University, Sweden
Source Glaciology in the International Polar Year, prefaced by G.H. Gudmundsson. Annals of Glaciology, 51(55), p.9-15, . Publisher: International Glaciological Society, Cambridge, United Kingdom. ISSN: 0260- 3055
Publication Date 2010
Notes In English. 32 refs. CRREL Acc. No: 64004751
Index Terms density (mass/volume); hydrology; snow; snow cover; snow cover distribution; snow density; temperature; Antarctica--East Antarctic ice sheet; Antarctica--East Antarctica; Antarctica--Syowa Station; Antarctic ice sheet; Antarctica; density; dielectric constant; East Antarctic ice sheet; East Antarctica; East Ongul Island; International Polar Year 2007-08; IPY 2007-08 Research Publications; Queen Maud Land; Syowa Station; Wasa Station
Abstract As a joint contribution of Japan and Sweden to the International Polar Year 2007- 09, a field expedition between Syowa and Wasa stations in East Antarctica was carried out in the 2007/08 austral summer season. Along the 2800 km long expedition route, the dielectric permittivity of the upper 1 m snow layer was measured at intervals of approximately 50 km using a snow fork, a parallel-wire transmission-line resonator. More than 2000 measurements were performed under carefully calibrated conditions, mostly in the interior of Antarctica. The permittivity measurement was a function of snow density as in previous studies on dry snow, but the values were significantly smaller than those reported before. In the light of the dielectric mixture theory, the relatively smaller permittivity measurement obtained in this study can be attributed to the snow structures characteristic in the studied region. Our data suggest that the permittivity of snow in the Antarctic interior is significantly affected by weak bonding between snow grains, which is due to depth-hoar formation in the extremely low- temperature conditions.
URL http://www.igsoc.org/annals/v51/55/a55a027.pdf
Publication Type journal article
Record ID 300295