Snow density along the route traversed by the Japanese-Swedish Antarctic Expedition 2007/08
During the Japanese-Swedish Antarctic traverse expedition of 2007/08, we measured the surface snow density at 46 locations along the 2800 km long route from Syowa station to Wasa station in East Antarctica. The mean snow density for the upper 1 (or 0.5) m layer varied from 333 to 439 kg m^[-3] over...
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fthokunivhus:oai:eprints.lib.hokudai.ac.jp:2115/50785 2023-05-15T13:42:37+02:00 Snow density along the route traversed by the Japanese-Swedish Antarctic Expedition 2007/08 Sugiyama, Shin Enomoto, Hiroyuki Fujita, Shuji Fukui, Kotaro Nakazawa, Fumio Holmlund, Per Surdyk, Sylviane http://hdl.handle.net/2115/50785 https://doi.org/10.3189/2012JoG11J201 eng eng International Glaciological Society http://www.igsoc.org/ http://hdl.handle.net/2115/50785 Journal of Glaciology, 58(209): 529-539 http://dx.doi.org/10.3189/2012JoG11J201 © 2012 International Glaciological Society 452 article fthokunivhus https://doi.org/10.3189/2012JoG11J201 2022-11-18T01:02:25Z During the Japanese-Swedish Antarctic traverse expedition of 2007/08, we measured the surface snow density at 46 locations along the 2800 km long route from Syowa station to Wasa station in East Antarctica. The mean snow density for the upper 1 (or 0.5) m layer varied from 333 to 439 kg m^[-3] over a region spanning an elevation range of 365-3800 m a.s.l. The density variations were associated with the elevation of the sampling sites; the density decreased as the elevation increased, moving from the coastal region inland. However, the density was relatively insensitive to the change in elevation along the ridge on the Antarctic plateau between Dome F and Kohnen stations. Because surface wind is weak in this region, irrespective of elevation, the wind speed was suggested to play a key role in the near-surface densification. The results of multiple regression performed on the density using meteorological variables were significantly improved by the inclusion of wind speed as a predictor. The regression analysis yielded a linear dependence between the density and the wind speed, with a coefficient of 13.5 kg m^[-3] (m s^[-1])^[-1]. This relationship is nearly three times stronger than a value previously computed from a dataset available in Antarctica. Our data indicate that the wind speed is more important to estimates of the surface snow density in Antarctica than has been previously assumed. Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica Journal of Glaciology Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP) Antarctic Dome F ENVELOPE(39.700,39.700,-77.317,-77.317) East Antarctica Kohnen ENVELOPE(0.000,0.000,-75.000,-75.000) Syowa Station The Antarctic Wasa ENVELOPE(-13.408,-13.408,-73.043,-73.043) Wasa Station ENVELOPE(-13.417,-13.417,-73.050,-73.050) Journal of Glaciology 58 209 529 539 |
institution |
Open Polar |
collection |
Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP) |
op_collection_id |
fthokunivhus |
language |
English |
topic |
452 |
spellingShingle |
452 Sugiyama, Shin Enomoto, Hiroyuki Fujita, Shuji Fukui, Kotaro Nakazawa, Fumio Holmlund, Per Surdyk, Sylviane Snow density along the route traversed by the Japanese-Swedish Antarctic Expedition 2007/08 |
topic_facet |
452 |
description |
During the Japanese-Swedish Antarctic traverse expedition of 2007/08, we measured the surface snow density at 46 locations along the 2800 km long route from Syowa station to Wasa station in East Antarctica. The mean snow density for the upper 1 (or 0.5) m layer varied from 333 to 439 kg m^[-3] over a region spanning an elevation range of 365-3800 m a.s.l. The density variations were associated with the elevation of the sampling sites; the density decreased as the elevation increased, moving from the coastal region inland. However, the density was relatively insensitive to the change in elevation along the ridge on the Antarctic plateau between Dome F and Kohnen stations. Because surface wind is weak in this region, irrespective of elevation, the wind speed was suggested to play a key role in the near-surface densification. The results of multiple regression performed on the density using meteorological variables were significantly improved by the inclusion of wind speed as a predictor. The regression analysis yielded a linear dependence between the density and the wind speed, with a coefficient of 13.5 kg m^[-3] (m s^[-1])^[-1]. This relationship is nearly three times stronger than a value previously computed from a dataset available in Antarctica. Our data indicate that the wind speed is more important to estimates of the surface snow density in Antarctica than has been previously assumed. |
format |
Article in Journal/Newspaper |
author |
Sugiyama, Shin Enomoto, Hiroyuki Fujita, Shuji Fukui, Kotaro Nakazawa, Fumio Holmlund, Per Surdyk, Sylviane |
author_facet |
Sugiyama, Shin Enomoto, Hiroyuki Fujita, Shuji Fukui, Kotaro Nakazawa, Fumio Holmlund, Per Surdyk, Sylviane |
author_sort |
Sugiyama, Shin |
title |
Snow density along the route traversed by the Japanese-Swedish Antarctic Expedition 2007/08 |
title_short |
Snow density along the route traversed by the Japanese-Swedish Antarctic Expedition 2007/08 |
title_full |
Snow density along the route traversed by the Japanese-Swedish Antarctic Expedition 2007/08 |
title_fullStr |
Snow density along the route traversed by the Japanese-Swedish Antarctic Expedition 2007/08 |
title_full_unstemmed |
Snow density along the route traversed by the Japanese-Swedish Antarctic Expedition 2007/08 |
title_sort |
snow density along the route traversed by the japanese-swedish antarctic expedition 2007/08 |
publisher |
International Glaciological Society |
url |
http://hdl.handle.net/2115/50785 https://doi.org/10.3189/2012JoG11J201 |
long_lat |
ENVELOPE(39.700,39.700,-77.317,-77.317) ENVELOPE(0.000,0.000,-75.000,-75.000) ENVELOPE(-13.408,-13.408,-73.043,-73.043) ENVELOPE(-13.417,-13.417,-73.050,-73.050) |
geographic |
Antarctic Dome F East Antarctica Kohnen Syowa Station The Antarctic Wasa Wasa Station |
geographic_facet |
Antarctic Dome F East Antarctica Kohnen Syowa Station The Antarctic Wasa Wasa Station |
genre |
Antarc* Antarctic Antarctica East Antarctica Journal of Glaciology |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica Journal of Glaciology |
op_relation |
http://www.igsoc.org/ http://hdl.handle.net/2115/50785 Journal of Glaciology, 58(209): 529-539 http://dx.doi.org/10.3189/2012JoG11J201 |
op_rights |
© 2012 International Glaciological Society |
op_doi |
https://doi.org/10.3189/2012JoG11J201 |
container_title |
Journal of Glaciology |
container_volume |
58 |
container_issue |
209 |
container_start_page |
529 |
op_container_end_page |
539 |
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1766170155586420736 |