Transformation of the gravity observations between tide systems

https://tapchi.humg.edu.vn/en/archives?article=1026
  • Affiliations:

    1 Viện Kỹ thuật công trình đặc biệt, Học viên kỹ thuật quân sự, Việt Nam;
    2 Khoa Trắc địa Bản đồ và Quản lý Đất đai, Trường Đại học Mỏ - Địa chất, Việt Nam

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  • Received: 10th-May-2019
  • Revised: 20th-July-2019
  • Accepted: 30th-Aug-2019
  • Online: 30th-Aug-2019
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Abstract:

The target of this paper is transformation of the gravity observations between the tide systems. In this paper the mean-tide, zero-tide, nontidal systems and the effect of tide on gravity observations were reseached. Then, the formulas for transformation of the gravity observations between the tide systems were searched and applied. The gravity contributions of the tide were computed for the points distributed along the Vietnam territory. The experimental results have show that the effect of the tide on gravity are remarkable; They depend on latitude of the observation points; In the diffirent tide systems the gravity contribution of the tide are diffirence. For Vietnamese territory, the corrections for transformation from the mean tide system to the zero tide system varies from 0.0141 mGal to 0.0286 mGal, from the mean tide system to the nontidal system varies from 0.0164 mGal to 0,0332 mGal, from the zero tide system to nontidal system varies from 0.0023 mGal to 0.0046 mGal. So, after solving the geodesy problems, the gravity observations need to be transfered to the united tide system.

How to Cite
Nguyen, L.Thanh and Nguyen, S.Van 2019. Transformation of the gravity observations between tide systems (in Vietnamese). Journal of Mining and Earth Sciences. 60, 4 (Aug, 2019).

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