Gravity Measurements Using Absolute Gravimeter FG5 and Secular Gravity Changes at Syowa Station, Antarctica
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- Higashi Toshihiro
- TerraGrav LLC.
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- Doi Koichiro
- National Institute of Polar Research The Graduate University for Advanced Studies
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- Hayakawa Hideaki
- National Institute of Polar Research
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- Kazama Takahito
- Graduate School of Science, Kyoto University
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- Ota Harumi
- Global Ocean Development Inc.
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- Ohsono Shingo
- GNSS Technologies Inc.
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- Hanyu Tomoko
- The Graduate University for Advanced Studies
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- Iwanami Shunsuke
- Tomakomai National College of Technology
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- Aoyama Yuichi
- National Institute of Polar Research The Graduate University for Advanced Studies
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- Shibuya Kazuo
- National Institute of Polar Research The Graduate University for Advanced Studies
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- Fukuda Yoichi
- Graduate School of Science, Kyoto University
Bibliographic Information
- Other Title
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- 南極昭和基地における絶対重力計FG5による重力測定と重力経年変化
- ナンキョク ショウワ キチ ニ オケル ゼッタイ ジュウリョクケイ FG5 ニ ヨル ジュウリョク ソクテイ ト ジュウリョクケイ ネンヘンカ
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Abstract
Absolute gravity measurements were carried out as a part of activities in 2011-2012 austral summer season of the 53rd Japanese Antarctic Research Expedition (JARE53) at Syowa Station, Antarctica. Obtained absolute gravity value was 982524322.7±0.1 μgal (1 μgal=10-8ms-2) using an absolute gravimeter FG5#210. Absolute gravity measurements using FG5 gravimeter have been conducted 5 times at Syowa Station. Comparing the previous obtained gravity values, we had confirmed instrumental offset among employed three FG5 absolute gravimeters. The gravity values after the correction of instrumental offset show a gravity decreasing rate of about 0.24 μgal/year. This secular gravity changes are consistent with the crustal uplift associated with Glacial Isostatic Adjustment (GIA) observed around Syowa Station, Antarctica.
Journal
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- Journal of the Geodetic Society of Japan
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Journal of the Geodetic Society of Japan 59 (2), 37-43, 2013
The Geodetic Society of Japan
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Details 詳細情報について
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- CRID
- 1390001204067304704
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- NII Article ID
- 10031190165
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- NII Book ID
- AN00134900
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- ISSN
- 2185517X
- 00380830
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- NDL BIB ID
- 024839377
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed