Gravity survey on the Mizuho Plateau, East Antarctica along the traverse routes to Dome-F from Syowa Station
Several kinds of geophysical and glaciological surveys were carried out on the Mizuho Plateau from Syowa Station (69.0°S, 39.6°E) to Dome-F (77.4°S, 39.6°E) in 1992 by the inland traverse team of the 33rd Japanese Antarctic Research Expedition (JARE-33). The gravity measurements were conducted by La...
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ftdoajarticles:oai:doaj.org/article:1f673c8b9b814b79a034ca5d9897032d 2023-05-15T13:49:09+02:00 Gravity survey on the Mizuho Plateau, East Antarctica along the traverse routes to Dome-F from Syowa Station Kokichi Kamiyama Masaki Kanao Maeno Hideo Teruo Furukawa 1994-03-01T00:00:00Z https://doi.org/10.15094/00008841 https://doaj.org/article/1f673c8b9b814b79a034ca5d9897032d EN JA eng jpn National Institute of Polar Research http://doi.org/10.15094/00008841 https://doaj.org/toc/0085-7289 https://doaj.org/toc/2432-079X doi:10.15094/00008841 0085-7289 2432-079X https://doaj.org/article/1f673c8b9b814b79a034ca5d9897032d Antarctic Record, Vol 38, Iss 1, Pp 41-53 (1994) Geography (General) G1-922 article 1994 ftdoajarticles https://doi.org/10.15094/00008841 2022-12-31T03:30:06Z Several kinds of geophysical and glaciological surveys were carried out on the Mizuho Plateau from Syowa Station (69.0°S, 39.6°E) to Dome-F (77.4°S, 39.6°E) in 1992 by the inland traverse team of the 33rd Japanese Antarctic Research Expedition (JARE-33). The gravity measurements were conducted by LaCoste-Romberg gravity meter (G-515) at about 10km-intervals along the traverse routes. The start-and-end measurement point were the absolute gravity point (IAGBN) at Syowa Station. Along the upward route to Dome-F, the measurements were often interrupted by instrument fluctuation induced by the strong wind. The instrument was cooled down (possible occurrence of the tears) at least twice when the oversnow vehicle did not move and the electric supply was stopped. The gravity values along the traverse routes were determined considering the correction of drift rates and some tears. The gravity anomalies were calculated by making use of the data both of surface elevation from GPS positioning with some modification by atmospheric pressure and of the ice thickness from the radio-echo soundings. The obtained free-air gravity anomaly profiles correlate well with those of bedrock elevation. The continuous data of bedrock elevation beneath the Dome-F area, obtained by radio-echo soundings, revealed the basin-like topographic structure of the glacier beds surrounded by bedrocks at comparatively higher altitude, which is supported by free-air anomaly data. Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica Directory of Open Access Journals: DOAJ Articles Antarctic East Antarctica Syowa Station Mizuho ENVELOPE(44.317,44.317,-70.683,-70.683) Mizuho Plateau ENVELOPE(40.000,40.000,-73.000,-73.000) Dome F ENVELOPE(39.700,39.700,-77.317,-77.317) |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English Japanese |
topic |
Geography (General) G1-922 |
spellingShingle |
Geography (General) G1-922 Kokichi Kamiyama Masaki Kanao Maeno Hideo Teruo Furukawa Gravity survey on the Mizuho Plateau, East Antarctica along the traverse routes to Dome-F from Syowa Station |
topic_facet |
Geography (General) G1-922 |
description |
Several kinds of geophysical and glaciological surveys were carried out on the Mizuho Plateau from Syowa Station (69.0°S, 39.6°E) to Dome-F (77.4°S, 39.6°E) in 1992 by the inland traverse team of the 33rd Japanese Antarctic Research Expedition (JARE-33). The gravity measurements were conducted by LaCoste-Romberg gravity meter (G-515) at about 10km-intervals along the traverse routes. The start-and-end measurement point were the absolute gravity point (IAGBN) at Syowa Station. Along the upward route to Dome-F, the measurements were often interrupted by instrument fluctuation induced by the strong wind. The instrument was cooled down (possible occurrence of the tears) at least twice when the oversnow vehicle did not move and the electric supply was stopped. The gravity values along the traverse routes were determined considering the correction of drift rates and some tears. The gravity anomalies were calculated by making use of the data both of surface elevation from GPS positioning with some modification by atmospheric pressure and of the ice thickness from the radio-echo soundings. The obtained free-air gravity anomaly profiles correlate well with those of bedrock elevation. The continuous data of bedrock elevation beneath the Dome-F area, obtained by radio-echo soundings, revealed the basin-like topographic structure of the glacier beds surrounded by bedrocks at comparatively higher altitude, which is supported by free-air anomaly data. |
format |
Article in Journal/Newspaper |
author |
Kokichi Kamiyama Masaki Kanao Maeno Hideo Teruo Furukawa |
author_facet |
Kokichi Kamiyama Masaki Kanao Maeno Hideo Teruo Furukawa |
author_sort |
Kokichi Kamiyama |
title |
Gravity survey on the Mizuho Plateau, East Antarctica along the traverse routes to Dome-F from Syowa Station |
title_short |
Gravity survey on the Mizuho Plateau, East Antarctica along the traverse routes to Dome-F from Syowa Station |
title_full |
Gravity survey on the Mizuho Plateau, East Antarctica along the traverse routes to Dome-F from Syowa Station |
title_fullStr |
Gravity survey on the Mizuho Plateau, East Antarctica along the traverse routes to Dome-F from Syowa Station |
title_full_unstemmed |
Gravity survey on the Mizuho Plateau, East Antarctica along the traverse routes to Dome-F from Syowa Station |
title_sort |
gravity survey on the mizuho plateau, east antarctica along the traverse routes to dome-f from syowa station |
publisher |
National Institute of Polar Research |
publishDate |
1994 |
url |
https://doi.org/10.15094/00008841 https://doaj.org/article/1f673c8b9b814b79a034ca5d9897032d |
long_lat |
ENVELOPE(44.317,44.317,-70.683,-70.683) ENVELOPE(40.000,40.000,-73.000,-73.000) ENVELOPE(39.700,39.700,-77.317,-77.317) |
geographic |
Antarctic East Antarctica Syowa Station Mizuho Mizuho Plateau Dome F |
geographic_facet |
Antarctic East Antarctica Syowa Station Mizuho Mizuho Plateau Dome F |
genre |
Antarc* Antarctic Antarctica East Antarctica |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica |
op_source |
Antarctic Record, Vol 38, Iss 1, Pp 41-53 (1994) |
op_relation |
http://doi.org/10.15094/00008841 https://doaj.org/toc/0085-7289 https://doaj.org/toc/2432-079X doi:10.15094/00008841 0085-7289 2432-079X https://doaj.org/article/1f673c8b9b814b79a034ca5d9897032d |
op_doi |
https://doi.org/10.15094/00008841 |
_version_ |
1766250957215105024 |