New absolute gravity measurements in New Zealand

Yoichi Fukuda, Hiroshi Takiguchi, Takahito Kazama, Jun Nishijima, Sergei Gulyaev, Tim Natusch, Matt Amos, Vaughan Stagpoole, Christopher Pearson

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

4 被引用数 (Scopus)

抄録

To enhance and extend the absolute gravity (AG) measurements in New Zealand, we conducted new measurements using a FG5 (#210 of Kyoto University) in January and March 2016. The measurements in the North Island were made at two existing points (the Warkworth Radio Astronomical Observatory and Wellington A) and at one newly established point at the Wairakei Research Centre, Taupo. The gravity measurements in the South Island were made at five existing AG points; Godley Head, Mt John, the University of Otago, Helipad and Bealey Hotel. At each point more than 4,000 drops were made and AG values were determined with measurement uncertainties better than 3 μGal (mostly better than 2 μGal) at 130 cm instrument height. The values are compared with those of the 2015 campaigns. Although the differences of about 10 μGal were observed at Wellington A and Godley Head, those at the other points were within 5 μGal. At points in the Southern Alps we combined AG with relative gravity measurements and achieved good agreement with the 2015 results. Definite values for long-term gravity trends at the points in Southern Alps and Christchurch could not be obtained from the survey, but the results are consistent with those of the previous studies. Further measurements are planned to accurately determine these gravity changes.

本文言語英語
ホスト出版物のタイトルInternational Symposium on Gravity, Geoid and Height Systems 2016 - Proceedings Organized by IAG Commission 2 and the International Gravity Field Service
編集者Riccardo Barzaghi, Jeffrey T. Freymueller, Laura Sánchez, Georgios S. Vergos, Roland Pail
出版社Springer Verlag
ページ95-101
ページ数7
ISBN(印刷版)9783319953175
DOI
出版ステータス出版済み - 2019
イベントInternational Association of Geodesy (IAG) symposium “Gravity, Geoid and Height Systems 2016”, GGHS 2016 - Thessaloniki, ギリシャ
継続期間: 9 19 20169 23 2016

出版物シリーズ

名前International Association of Geodesy Symposia
148
ISSN(印刷版)0939-9585

その他

その他International Association of Geodesy (IAG) symposium “Gravity, Geoid and Height Systems 2016”, GGHS 2016
国/地域ギリシャ
CityThessaloniki
Period9/19/169/23/16

All Science Journal Classification (ASJC) codes

  • 地球科学におけるコンピュータ
  • 地球物理学

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